Cardiologist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Chiropractor providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Dentist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Dermatologist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Family Physician providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
OB-GYN providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Ophthalmologist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Orthopedic Surgeon providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Pediatrician providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Physical Therapist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Podiatrist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Psychiatrist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
At his private practice in Foothill Ranch, California, board-certified and fellowship-trained gastroenterologist Kevin Ashby, MD, and his team treat patients like members of the family. The gastroenterology practice focuses on gastrointestinal (GI) problems and diseases including gallbladder disease, diarrhea, GERD, irritable bowel syndrome, constipation, and peptic ulcers.
Dr. Ashby uses superior diagnostic skills and a variety of advanced tests, including upper endoscopy, flexible sigmoidoscopy, and colonoscopy, to uncover the underlying reasons for GI problems. Patients receive comprehensive treatment for their GI issues, from diet and lifestyle changes to medication and surgery.
The warm and compassionate team at Kevin Ashby, MD, is truly dedicated to excellent patient experiences. Patients can expect the best in personalized care, from scheduling to procedures to recovery services.
At this time, Kevin Ashby, MD, is welcoming new patients in our Foothill Ranch Office. Schedule an appointment by calling the office.
Heba Ashraf, MD, FACP is a gastroenterologist at Digestive Disease Consultants of Orange County with locations in Irvine, Huntington Beach, Tustin and Foothill Ranch, California. She is dual board certified in Internal Medicine and Gastroenterology by the American Board of Internal Medicine.
She specializes in management of a wide array of gastrointestinal diseases including GERD, liver diseases/cirrhosis and inflammatory bowel disease. In addition to performing diagnostic and therapeutic upper and lower endoscopy, Dr. Ashraf also performs High Resolution Manometry, EndoFlip, pH testing and Capsule endoscopy.
She is a member of American Gastroenterological Association (AGA), the American College of Gastroenterology (ACG), the American Society of Gastrointestinal Endoscopy (ASGE) and American Association for the study of Liver Diseases (AASLD).
Dr. Ashraf grew up in New Jersey spending her days either at the shore or in the nearby cities. She went to Rutgers University then completed her medical school at Baqai Medical University in Pakistan. She completed her internal medicine residency at Beaumont Hospital in Michigan. After residency she became one of the first GI hospitalists at Thomas Jefferson University in Philadelphia. She then completed her GI fellowship at Michigan State/Ascension Providence Hospital.
She developed an interest in gastroenterology and nutrition early in her medical training. She has a fond interest in women’s health and prevention of gastrointestinal cancers. She believes her role as a physician is to provide her patients with accurate information and work as a team to accomplish their goals and improve overall health and well-being.
Dr. Ashraf has earned numerous awards throughout her medical career including Wayne State University Resident teaching award, Beaumont Resident Research Day Winner, and ACG Outstanding Poster Presenter.
Outside of work, she spends her time traveling and spending time with her 4 siblings. She also loves hiking and cooking. Dr. Ashraf is fluent in English, Urdu and Hindi.
Shahrooz Bemanian, MD, FACP, MA, MS, is a board-certified gastroenterologist at Digestive Disease Consultants of Orange County, with locations in Irvine, Huntington Beach, Tustin, and Foothill Ranch, California.
Ever since Dr. Bemanian was a young child, he was determined to become a doctor. Helping people reach their health goals appealed to him. It was, however, after watching a close family member deal with the devastation of colon cancer that he knew without a doubt he wanted to specialize in the field of gastroenterology.
Dr. Bemanian earned his Master of Science and Doctor of Medicine at Chicago Medical School. He completed his residency at the University of Southern California (USC), as well as his fellowship in gastroenterology/hepatology and liver transplantation. He is board-certified in gastroenterology/hepatology and internal medicine.
He has earned numerous awards throughout this medical career, including the Physicians of Excellence Award, the USC Resident of the Year, the American Liver Foundation/American Association for the Study of Liver Diseases Resident Scholar Award, and the USC Sabina Brautbar Resident Scholar Award.
Dr. Bemanian’s special interests include colon cancer prevention, stomach and esophageal cancer detection, hemorrhoids treatment, nonsurgical weight-loss treatment, and advanced biliary interventional endoscopy. He incorporates the latest endoscopy technology in his procedures, diagnosing, preventing, and treating gastrointestinal disorders, including esophageal, gastric, and colon cancer.
To stay up to date on the latest advancements in his field, Dr. Bemanian is a member of the American College of Physicians, the American Medical Association, the American College of Gastroenterology, the Southern California Society of Gastroenterology, the Orange County Gastroenterology Association, and the Orange County Medical Association.
For Dr. Bemanian, the years of education, training, and hard work that led him down this path have provided the ability to focus on one goal: attending to the patient in front of him, no matter what the future of medicine holds.
Dr. Bemanian is native to Southern California and is fluent in Farsi/Persian. He enjoys spending time with his wife and children.
Paul Lee, MD, MPH, MA, is a compassionate gastroenterologist at Digestive Disease Consultants of Orange County, with locations in Irvine, Huntington Beach, Tustin, and Foothill Ranch, California.
Many people ask Dr. Lee why he chose to be a gastroenterologist, and for him the answer is simple: Instead of choosing this field, he thinks, more accurately, it chose him. He grew up with a close family member with Crohn’s disease. At that time, there were fewer options to treat this chronic disease, and he saw how it affected not only her body but also her mind and spirit. This sparked his passion. Gastroenterology is a great field to not only treat diseases but also to prevent them, which he finds incredible.
To achieve his goal of becoming a gastroenterologist, Dr. Lee earned his Doctor of Medicine from the George Washington University Medical School, and then went on to earn his Master of Public Health from the University of California School of Public Health. He completed his residency at the University of Southern California, followed by a fellowship in gastroenterology/hematology. He is board-certified in gastroenterology/hepatology and internal medicine.
As part of his work, Dr. Lee knows that diseases can present in different ways because every human is unique. He seeks to understand that uniqueness and uses it as a tool to better his patients’ health. This bio-psycho-social aspect of medicine is crucial in diagnosing, maintaining, and maximizing one’s GI health.
Throughout this career, Dr. Lee has earned several awards, including the Physicians of Excellence Award, and the Orange County Register and Orange County Medical Association Award in 2015, 2016, and 2017. He is a member of the American College of Gastroenterology, the American Society of Gastrointestinal Endoscopy, and the American College of Physicians.
For Dr. Lee, his one constant in medicine is that he loves what he does. And if patients can appreciate that, it is the right start in establishing that special connection: the doctor-patient relationship.
Dr. Lee founded Digestive Disease Consultants of Orange County in 2008. He strives to be a compassionate physician and a loving father of three children, and a husband to his lovely wife.
His background in health food and nutrition broadens his perspective on medicine and treatment options. In addition to medicine, he regularly attends Redeemer Presbyterian Church, holds a black belt in tae kwon do, and enjoys travel, fine dining, and the arts.
Gastroenterologist Victor Yu, MD, considers himself extremely privileged to be able to comprehensively and compassionately care for people with digestive health issues at Digestive Disease Consultants of Orange County, with locations in Irvine, Huntington Beach, Tustin, and Foothill Ranch, California. Building a strong, trusting physician-patient relationship is a foundation he always strives to achieve, as he believes this is a vital step to treatment success. Treating each patient as if he or she were a member of his own family is a standard of care he upholds in his practice.
Dr. Yu earned his Doctor of Medicine from the University of Southern California (USC), Keck School of Medicine. He then completed his residency in internal medicine at USC as well as his fellowship in gastroenterology/hepatology and liver diseases. He is board-certified in gastroenterology/hepatology and internal medicine.
Dr. Yu specializes in medical disorders of the digestive system, including the esophagus, stomach, small intestine, colon, liver, gallbladder, pancreas, and hemorrhoids. His array of diagnostic and therapeutic techniques includes upper endoscopy (EGD), colonoscopy, capsule endoscopy, small intestine deep enteroscopy, and bile duct/pancreatic duct endoscopy (ERCP). He treats acute and chronic GI problems and focuses heavily on the prevention of diseases such as colon and esophageal cancer.
Dr. Yu joined Drs. Paul Lee and Shahrooz Bemanian in 2010 to help provide a comfortable and friendly medical office environment to meet the needs of their patients.
Dr. Yu is a Southern California native, fluent in Mandarin and medical Spanish, and excited to be practicing in the area where he grew up. When not hard at work, Dr. Yu enjoys traveling, reading, golf, basketball, and photography.
Matthew Oman, MD, is a skilled gastroenterologist at Digestive Disease Consultants of Orange County, with locations in Irvine, Huntington Beach, Tustin, and Foothill Ranch, California.
Dr. Oman attended medical school at the University of Utah. He completed his residency at the University of Colorado and completed his fellowship in Endoscopic Retrograde Cholangiopancreatography (ERCP) and Endoscopic Ultrasound (EUS) at Loma Linda University. He is board-certified in gastroenterology/hepatology and internal medicine.
When Dr. Oman entered medical school, many of his classmates knew the specialty they wanted to work in. However, he had an open mind and was excited to be exposed to the various specialties of medicine. When the time came to decide, he had noticed that he was most interested and happy when encountering patients with gastroenterology and hepatology health issues. While he is fascinated with the pathophysiology and medical side of this specialty, it was the technical, hands-on, endoscopic aspect that solidified his decision.
He was amazed as a medical student the first time he saw a bleeding gastric ulcer treated endoscopically. While training in fellowship, he could see how endoscopy is much more and can relieve a variety of issues and symptoms for patients, from removing a gallstone lodged in the bile duct, opening a stricture in the esophagus so a patient can swallow again or draining a cyst through endoscopic ultrasound.
Dr. Oman has interests in colorectal cancer prevention and diagnosis, stomach and esophageal disorders, small bowel disorders, as well as pancreas and biliary disorders, which include advanced pancreatic and biliary diagnosis and intervention (ERCP, EUS).
Throughout his career, he has earned numerous awards, including the Resident Consultant of the Year (Loma Linda Family Medicine) and the Internal Medicine Subspecialty Fellow of the Year (Loma Linda Internal Medicine). He is also a member of several organizations, including Alpha Omega Alpha, the American Society of Gastrointestinal Endoscopy, the American College of Gastroenterology, the American Gastroenterology Association, and the Southern California Society of Gastroenterology.
He spends his time away from work with his wife and young son but still tries to go hiking, mountain biking, and indoor rock climbing.
Heba Ashraf, MD, FACP is a gastroenterologist at Digestive Disease Consultants of Orange County with locations in Irvine, Huntington Beach, Tustin and Foothill Ranch, California. She is dual board certified in Internal Medicine and Gastroenterology by the American Board of Internal Medicine.
She specializes in management of a wide array of gastrointestinal diseases including GERD, liver diseases/cirrhosis and inflammatory bowel disease. In addition to performing diagnostic and therapeutic upper and lower endoscopy, Dr. Ashraf also performs High Resolution Manometry, EndoFlip, pH testing and Capsule endoscopy.
She is a member of American Gastroenterological Association (AGA), the American College of Gastroenterology (ACG), the American Society of Gastrointestinal Endoscopy (ASGE) and American Association for the study of Liver Diseases (AASLD).
Dr. Ashraf grew up in New Jersey spending her days either at the shore or in the nearby cities. She went to Rutgers University then completed her medical school at Baqai Medical University in Pakistan. She completed her internal medicine residency at Beaumont Hospital in Michigan. After residency she became one of the first GI hospitalists at Thomas Jefferson University in Philadelphia. She then completed her GI fellowship at Michigan State/Ascension Providence Hospital.
She developed an interest in gastroenterology and nutrition early in her medical training. She has a fond interest in women’s health and prevention of gastrointestinal cancers. She believes her role as a physician is to provide her patients with accurate information and work as a team to accomplish their goals and improve overall health and well-being.
Dr. Ashraf has earned numerous awards throughout her medical career including Wayne State University Resident teaching award, Beaumont Resident Research Day Winner, and ACG Outstanding Poster Presenter.
Outside of work, she spends her time traveling and spending time with her 4 siblings. She also loves hiking and cooking. Dr. Ashraf is fluent in English, Urdu and Hindi.
Shahrooz Bemanian, MD, FACP, MA, MS, is a board-certified gastroenterologist at Digestive Disease Consultants of Orange County, with locations in Irvine, Huntington Beach, Tustin, and Foothill Ranch, California.
Ever since Dr. Bemanian was a young child, he was determined to become a doctor. Helping people reach their health goals appealed to him. It was, however, after watching a close family member deal with the devastation of colon cancer that he knew without a doubt he wanted to specialize in the field of gastroenterology.
Dr. Bemanian earned his Master of Science and Doctor of Medicine at Chicago Medical School. He completed his residency at the University of Southern California (USC), as well as his fellowship in gastroenterology/hepatology and liver transplantation. He is board-certified in gastroenterology/hepatology and internal medicine.
He has earned numerous awards throughout this medical career, including the Physicians of Excellence Award, the USC Resident of the Year, the American Liver Foundation/American Association for the Study of Liver Diseases Resident Scholar Award, and the USC Sabina Brautbar Resident Scholar Award.
Dr. Bemanian’s special interests include colon cancer prevention, stomach and esophageal cancer detection, hemorrhoids treatment, nonsurgical weight-loss treatment, and advanced biliary interventional endoscopy. He incorporates the latest endoscopy technology in his procedures, diagnosing, preventing, and treating gastrointestinal disorders, including esophageal, gastric, and colon cancer.
To stay up to date on the latest advancements in his field, Dr. Bemanian is a member of the American College of Physicians, the American Medical Association, the American College of Gastroenterology, the Southern California Society of Gastroenterology, the Orange County Gastroenterology Association, and the Orange County Medical Association.
For Dr. Bemanian, the years of education, training, and hard work that led him down this path have provided the ability to focus on one goal: attending to the patient in front of him, no matter what the future of medicine holds.
Dr. Bemanian is native to Southern California and is fluent in Farsi/Persian. He enjoys spending time with his wife and children.
Paul Lee, MD, MPH, MA, is a compassionate gastroenterologist at Digestive Disease Consultants of Orange County, with locations in Irvine, Huntington Beach, Tustin, and Foothill Ranch, California.
Many people ask Dr. Lee why he chose to be a gastroenterologist, and for him the answer is simple: Instead of choosing this field, he thinks, more accurately, it chose him. He grew up with a close family member with Crohn’s disease. At that time, there were fewer options to treat this chronic disease, and he saw how it affected not only her body but also her mind and spirit. This sparked his passion. Gastroenterology is a great field to not only treat diseases but also to prevent them, which he finds incredible.
To achieve his goal of becoming a gastroenterologist, Dr. Lee earned his Doctor of Medicine from the George Washington University Medical School, and then went on to earn his Master of Public Health from the University of California School of Public Health. He completed his residency at the University of Southern California, followed by a fellowship in gastroenterology/hematology. He is board-certified in gastroenterology/hepatology and internal medicine.
As part of his work, Dr. Lee knows that diseases can present in different ways because every human is unique. He seeks to understand that uniqueness and uses it as a tool to better his patients’ health. This bio-psycho-social aspect of medicine is crucial in diagnosing, maintaining, and maximizing one’s GI health.
Throughout this career, Dr. Lee has earned several awards, including the Physicians of Excellence Award, and the Orange County Register and Orange County Medical Association Award in 2015, 2016, and 2017. He is a member of the American College of Gastroenterology, the American Society of Gastrointestinal Endoscopy, and the American College of Physicians.
For Dr. Lee, his one constant in medicine is that he loves what he does. And if patients can appreciate that, it is the right start in establishing that special connection: the doctor-patient relationship.
Dr. Lee founded Digestive Disease Consultants of Orange County in 2008. He strives to be a compassionate physician and a loving father of three children, and a husband to his lovely wife.
His background in health food and nutrition broadens his perspective on medicine and treatment options. In addition to medicine, he regularly attends Redeemer Presbyterian Church, holds a black belt in tae kwon do, and enjoys travel, fine dining, and the arts.
Gastroenterologist Victor Yu, MD, considers himself extremely privileged to be able to comprehensively and compassionately care for people with digestive health issues at Digestive Disease Consultants of Orange County, with locations in Irvine, Huntington Beach, Tustin, and Foothill Ranch, California. Building a strong, trusting physician-patient relationship is a foundation he always strives to achieve, as he believes this is a vital step to treatment success. Treating each patient as if he or she were a member of his own family is a standard of care he upholds in his practice.
Dr. Yu earned his Doctor of Medicine from the University of Southern California (USC), Keck School of Medicine. He then completed his residency in internal medicine at USC as well as his fellowship in gastroenterology/hepatology and liver diseases. He is board-certified in gastroenterology/hepatology and internal medicine.
Dr. Yu specializes in medical disorders of the digestive system, including the esophagus, stomach, small intestine, colon, liver, gallbladder, pancreas, and hemorrhoids. His array of diagnostic and therapeutic techniques includes upper endoscopy (EGD), colonoscopy, capsule endoscopy, small intestine deep enteroscopy, and bile duct/pancreatic duct endoscopy (ERCP). He treats acute and chronic GI problems and focuses heavily on the prevention of diseases such as colon and esophageal cancer.
Dr. Yu joined Drs. Paul Lee and Shahrooz Bemanian in 2010 to help provide a comfortable and friendly medical office environment to meet the needs of their patients.
Dr. Yu is a Southern California native, fluent in Mandarin and medical Spanish, and excited to be practicing in the area where he grew up. When not hard at work, Dr. Yu enjoys traveling, reading, golf, basketball, and photography.
Matthew Oman, MD, is a skilled gastroenterologist at Digestive Disease Consultants of Orange County, with locations in Irvine, Huntington Beach, Tustin, and Foothill Ranch, California.
Dr. Oman attended medical school at the University of Utah. He completed his residency at the University of Colorado and completed his fellowship in Endoscopic Retrograde Cholangiopancreatography (ERCP) and Endoscopic Ultrasound (EUS) at Loma Linda University. He is board-certified in gastroenterology/hepatology and internal medicine.
When Dr. Oman entered medical school, many of his classmates knew the specialty they wanted to work in. However, he had an open mind and was excited to be exposed to the various specialties of medicine. When the time came to decide, he had noticed that he was most interested and happy when encountering patients with gastroenterology and hepatology health issues. While he is fascinated with the pathophysiology and medical side of this specialty, it was the technical, hands-on, endoscopic aspect that solidified his decision.
He was amazed as a medical student the first time he saw a bleeding gastric ulcer treated endoscopically. While training in fellowship, he could see how endoscopy is much more and can relieve a variety of issues and symptoms for patients, from removing a gallstone lodged in the bile duct, opening a stricture in the esophagus so a patient can swallow again or draining a cyst through endoscopic ultrasound.
Dr. Oman has interests in colorectal cancer prevention and diagnosis, stomach and esophageal disorders, small bowel disorders, as well as pancreas and biliary disorders, which include advanced pancreatic and biliary diagnosis and intervention (ERCP, EUS).
Throughout his career, he has earned numerous awards, including the Resident Consultant of the Year (Loma Linda Family Medicine) and the Internal Medicine Subspecialty Fellow of the Year (Loma Linda Internal Medicine). He is also a member of several organizations, including Alpha Omega Alpha, the American Society of Gastrointestinal Endoscopy, the American College of Gastroenterology, the American Gastroenterology Association, and the Southern California Society of Gastroenterology.
He spends his time away from work with his wife and young son but still tries to go hiking, mountain biking, and indoor rock climbing.
Heba Ashraf, MD, FACP is a gastroenterologist at Digestive Disease Consultants of Orange County with locations in Irvine, Huntington Beach, Tustin and Foothill Ranch, California. She is dual board certified in Internal Medicine and Gastroenterology by the American Board of Internal Medicine.
She specializes in management of a wide array of gastrointestinal diseases including GERD, liver diseases/cirrhosis and inflammatory bowel disease. In addition to performing diagnostic and therapeutic upper and lower endoscopy, Dr. Ashraf also performs High Resolution Manometry, EndoFlip, pH testing and Capsule endoscopy.
She is a member of American Gastroenterological Association (AGA), the American College of Gastroenterology (ACG), the American Society of Gastrointestinal Endoscopy (ASGE) and American Association for the study of Liver Diseases (AASLD).
Dr. Ashraf grew up in New Jersey spending her days either at the shore or in the nearby cities. She went to Rutgers University then completed her medical school at Baqai Medical University in Pakistan. She completed her internal medicine residency at Beaumont Hospital in Michigan. After residency she became one of the first GI hospitalists at Thomas Jefferson University in Philadelphia. She then completed her GI fellowship at Michigan State/Ascension Providence Hospital.
She developed an interest in gastroenterology and nutrition early in her medical training. She has a fond interest in women’s health and prevention of gastrointestinal cancers. She believes her role as a physician is to provide her patients with accurate information and work as a team to accomplish their goals and improve overall health and well-being.
Dr. Ashraf has earned numerous awards throughout her medical career including Wayne State University Resident teaching award, Beaumont Resident Research Day Winner, and ACG Outstanding Poster Presenter.
Outside of work, she spends her time traveling and spending time with her 4 siblings. She also loves hiking and cooking. Dr. Ashraf is fluent in English, Urdu and Hindi.
Shahrooz Bemanian, MD, FACP, MA, MS, is a board-certified gastroenterologist at Digestive Disease Consultants of Orange County, with locations in Irvine, Huntington Beach, Tustin, and Foothill Ranch, California.
Ever since Dr. Bemanian was a young child, he was determined to become a doctor. Helping people reach their health goals appealed to him. It was, however, after watching a close family member deal with the devastation of colon cancer that he knew without a doubt he wanted to specialize in the field of gastroenterology.
Dr. Bemanian earned his Master of Science and Doctor of Medicine at Chicago Medical School. He completed his residency at the University of Southern California (USC), as well as his fellowship in gastroenterology/hepatology and liver transplantation. He is board-certified in gastroenterology/hepatology and internal medicine.
He has earned numerous awards throughout this medical career, including the Physicians of Excellence Award, the USC Resident of the Year, the American Liver Foundation/American Association for the Study of Liver Diseases Resident Scholar Award, and the USC Sabina Brautbar Resident Scholar Award.
Dr. Bemanian’s special interests include colon cancer prevention, stomach and esophageal cancer detection, hemorrhoids treatment, nonsurgical weight-loss treatment, and advanced biliary interventional endoscopy. He incorporates the latest endoscopy technology in his procedures, diagnosing, preventing, and treating gastrointestinal disorders, including esophageal, gastric, and colon cancer.
To stay up to date on the latest advancements in his field, Dr. Bemanian is a member of the American College of Physicians, the American Medical Association, the American College of Gastroenterology, the Southern California Society of Gastroenterology, the Orange County Gastroenterology Association, and the Orange County Medical Association.
For Dr. Bemanian, the years of education, training, and hard work that led him down this path have provided the ability to focus on one goal: attending to the patient in front of him, no matter what the future of medicine holds.
Dr. Bemanian is native to Southern California and is fluent in Farsi/Persian. He enjoys spending time with his wife and children.
Paul Lee, MD, MPH, MA, is a compassionate gastroenterologist at Digestive Disease Consultants of Orange County, with locations in Irvine, Huntington Beach, Tustin, and Foothill Ranch, California.
Many people ask Dr. Lee why he chose to be a gastroenterologist, and for him the answer is simple: Instead of choosing this field, he thinks, more accurately, it chose him. He grew up with a close family member with Crohn’s disease. At that time, there were fewer options to treat this chronic disease, and he saw how it affected not only her body but also her mind and spirit. This sparked his passion. Gastroenterology is a great field to not only treat diseases but also to prevent them, which he finds incredible.
To achieve his goal of becoming a gastroenterologist, Dr. Lee earned his Doctor of Medicine from the George Washington University Medical School, and then went on to earn his Master of Public Health from the University of California School of Public Health. He completed his residency at the University of Southern California, followed by a fellowship in gastroenterology/hematology. He is board-certified in gastroenterology/hepatology and internal medicine.
As part of his work, Dr. Lee knows that diseases can present in different ways because every human is unique. He seeks to understand that uniqueness and uses it as a tool to better his patients’ health. This bio-psycho-social aspect of medicine is crucial in diagnosing, maintaining, and maximizing one’s GI health.
Throughout this career, Dr. Lee has earned several awards, including the Physicians of Excellence Award, and the Orange County Register and Orange County Medical Association Award in 2015, 2016, and 2017. He is a member of the American College of Gastroenterology, the American Society of Gastrointestinal Endoscopy, and the American College of Physicians.
For Dr. Lee, his one constant in medicine is that he loves what he does. And if patients can appreciate that, it is the right start in establishing that special connection: the doctor-patient relationship.
Dr. Lee founded Digestive Disease Consultants of Orange County in 2008. He strives to be a compassionate physician and a loving father of three children, and a husband to his lovely wife.
His background in health food and nutrition broadens his perspective on medicine and treatment options. In addition to medicine, he regularly attends Redeemer Presbyterian Church, holds a black belt in tae kwon do, and enjoys travel, fine dining, and the arts.
Gastroenterologist Victor Yu, MD, considers himself extremely privileged to be able to comprehensively and compassionately care for people with digestive health issues at Digestive Disease Consultants of Orange County, with locations in Irvine, Huntington Beach, Tustin, and Foothill Ranch, California. Building a strong, trusting physician-patient relationship is a foundation he always strives to achieve, as he believes this is a vital step to treatment success. Treating each patient as if he or she were a member of his own family is a standard of care he upholds in his practice.
Dr. Yu earned his Doctor of Medicine from the University of Southern California (USC), Keck School of Medicine. He then completed his residency in internal medicine at USC as well as his fellowship in gastroenterology/hepatology and liver diseases. He is board-certified in gastroenterology/hepatology and internal medicine.
Dr. Yu specializes in medical disorders of the digestive system, including the esophagus, stomach, small intestine, colon, liver, gallbladder, pancreas, and hemorrhoids. His array of diagnostic and therapeutic techniques includes upper endoscopy (EGD), colonoscopy, capsule endoscopy, small intestine deep enteroscopy, and bile duct/pancreatic duct endoscopy (ERCP). He treats acute and chronic GI problems and focuses heavily on the prevention of diseases such as colon and esophageal cancer.
Dr. Yu joined Drs. Paul Lee and Shahrooz Bemanian in 2010 to help provide a comfortable and friendly medical office environment to meet the needs of their patients.
Dr. Yu is a Southern California native, fluent in Mandarin and medical Spanish, and excited to be practicing in the area where he grew up. When not hard at work, Dr. Yu enjoys traveling, reading, golf, basketball, and photography.
Matthew Oman, MD, is a skilled gastroenterologist at Digestive Disease Consultants of Orange County, with locations in Irvine, Huntington Beach, Tustin, and Foothill Ranch, California.
Dr. Oman attended medical school at the University of Utah. He completed his residency at the University of Colorado and completed his fellowship in Endoscopic Retrograde Cholangiopancreatography (ERCP) and Endoscopic Ultrasound (EUS) at Loma Linda University. He is board-certified in gastroenterology/hepatology and internal medicine.
When Dr. Oman entered medical school, many of his classmates knew the specialty they wanted to work in. However, he had an open mind and was excited to be exposed to the various specialties of medicine. When the time came to decide, he had noticed that he was most interested and happy when encountering patients with gastroenterology and hepatology health issues. While he is fascinated with the pathophysiology and medical side of this specialty, it was the technical, hands-on, endoscopic aspect that solidified his decision.
He was amazed as a medical student the first time he saw a bleeding gastric ulcer treated endoscopically. While training in fellowship, he could see how endoscopy is much more and can relieve a variety of issues and symptoms for patients, from removing a gallstone lodged in the bile duct, opening a stricture in the esophagus so a patient can swallow again or draining a cyst through endoscopic ultrasound.
Dr. Oman has interests in colorectal cancer prevention and diagnosis, stomach and esophageal disorders, small bowel disorders, as well as pancreas and biliary disorders, which include advanced pancreatic and biliary diagnosis and intervention (ERCP, EUS).
Throughout his career, he has earned numerous awards, including the Resident Consultant of the Year (Loma Linda Family Medicine) and the Internal Medicine Subspecialty Fellow of the Year (Loma Linda Internal Medicine). He is also a member of several organizations, including Alpha Omega Alpha, the American Society of Gastrointestinal Endoscopy, the American College of Gastroenterology, the American Gastroenterology Association, and the Southern California Society of Gastroenterology.
He spends his time away from work with his wife and young son but still tries to go hiking, mountain biking, and indoor rock climbing.
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