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Board-certified internal medicine physician, and now offering aesthetic services, with an Advanced Bioidentical Hormone Replacement Therapy (ABHRT) certification — Sanjay Khedia, MD, strives to provide every patient with the highest level of compassionate care. He proudly serves adult and elderly patients at his practice in Covina, California, conveniently located 20 miles outside of Los Angeles, and is the medical director of nursing home and hospice facilities in the area.

Born and raised in India, Dr. Khedia graduated from the Maharaja Sayajirao University of Baroda with a Bachelor of Medicine, Bachelor of Surgery degree. He then immigrated to the United States to complete his residency in internal medicine at Mercy Hospital in Pittsburgh, Pennsylvania.

In addition to caring for patients at his office, Dr. Khedia happily visits nursing homes and hospitals. He also serves as medical director for nursing home and a hospice.

Dr. Khedia provides expert care for many complex conditions, including diabetes, high blood pressure, heart disease, and hormone imbalances. He prioritizes the needs of his patients and specializes in preventive medicine for optimal health. By routinely attending educational conferences, Dr. Khedia stays current on the latest advances and developments in medicine.

Aside from seeing patients, Dr. Khedia is chief of staff and a board member at Emanate Health. He was named Physician of the Year at Queen Valley Hospital in West Covina, California in 2004.

In his free time, Dr. Khedia enjoys spending time with his family, reading, and listening to music.

Paul Usborne, MD, is a skilled family medicine physician and the founder of Usborne Family Medicine, Inc. in Covina, California. Dr. Usborne has more than 13 years of health care experience and is known for his friendly bedside manner and expertise in managing primary care.

Dr. Usborne is a Southern California native and was born and raised in San Diego, California. He earned his undergraduate degree at the University of California, Davis. He received his doctorate degree from the American University of the Caribbean School of Medicine and completed his postgraduate education in family medicine at the University of Southern California (USC). He is a diplomat of the American Board of Family Medicine and has been practicing in the Covina area since 2006. Dr. Usborne is currently an Assistant Clinical Professor at USC Keck School of Medicine.

Dr. Usborne is affiliated with various hospitals in the area, including Foothill Presbyterian, Citrus Valley Inter-community Campus, Citrus Valley Queen of the Valley Campus, San Dimas Community Hospital, and Kindred Hospital.

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.

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.

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.

Advanced Gastroenterology & Liver Institute in Anaheim, Santa Ana, and Huntington Beach, California, provides comprehensive gastroenterology care. People travel from all over to consult with Tahmina Haq, MD, who is well-known for her compassionate care and clinical expertise.

At Advanced Gastroenterology & Liver Institute, Dr. Haq specializes in diagnosing and treating digestive disorders like Crohn’s disease, ulcerative colitis, and hepatitis. She also performs a number of diagnostic procedures, including upper endoscopy, endoscopic ultrasound, and endoscopic retrograde cholangiopancreatography (ERCP). 

In addition, people come to Advanced Gastroenterology & Liver Institute for colon cancer screenings and treatment of colon polyps. Dr. Haq has a high adenoma detection rate of 65%, increasing her patients’ protection against colon cancer.

After earning her Doctor of Medicine at Shifa College of Medicine in Rawalpindi, Islamabad, Pakistan, Dr. Haq completed her internal medicine residency at Loma Linda University Medical Center in Loma Linda, California. 

She then completed her gastroenterology fellowship at the University of California, San Francisco (UCSF) and her advanced endoscopy fellowship at Harbor-UCLA Medical Center in West Carson, California.

Dr. Haq takes the time to get to know her patients, building trust and long-lasting relationships. When not taking care of her patients, Dr. Haq enjoys traveling and spending time with her family.

Call Advanced Gastroenterology & Liver Institute or use the online booking button to schedule an appointment today.

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.