Dr. Ikenna Egbuna, MD
Gastroenterologist
2000 Transmountain Road
El Paso, TX 79911
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Availability last updated 09/13/2025
Dr. Ikenna Egbuna, MD
Gastroenterologist
2000 Transmountain Road
El Paso, TX 79911
Dr. Ikenna Egbuna, MD
Gastroenterologist
10301 Gateway Blvd. W
El Paso, TX 79925
Dr. Christopher Schwarz is a Michigan native. He graduated from Wayne State University School of Medicine in Detroit with his medical degree. He completed his internal medicine residency at Rush-Presbyterian St. Luke’s Medical Center in Chicago before relocating to the Southeast to do his fellowship in gastroenterology at the Medical College of Virginia. Dr. Schwarz is board certified in gastroenterology and hepatology.
He joined the group in 1998. Some of his clinical interest include biliary and pancreatic diseases, therapeutic endoscopy, and inflammatory bowel disease. Dr. Schwarz has been involved with fundraising for the Crohn’s and Colitis Foundation, and the Cancer Hospital at Rex Healthcare.
He lives in North Raleigh with his wife and has four children. He enjoys traveling and water sports with his family, foreign travel, as well as drawing and sculpture. Dr. Schwarz is also proficient in Spanish. He and his family attend Open Door Baptist Church.
Dr. Christopher Schwarz, MD
Gastroenterologist
2601 Lake Dr
Suite 201
Raleigh, NC 27607
Dr. Christopher Schwarz is a Michigan native. He graduated from Wayne State University School of Medicine in Detroit with his medical degree. He completed his internal medicine residency at Rush-Presbyterian St. Luke’s Medical Center in Chicago before relocating to the Southeast to do his fellowship in gastroenterology at the Medical College of Virginia. Dr. Schwarz is board certified in gastroenterology and hepatology.
He joined the group in 1998. Some of his clinical interest include biliary and pancreatic diseases, therapeutic endoscopy, and inflammatory bowel disease. Dr. Schwarz has been involved with fundraising for the Crohn’s and Colitis Foundation, and the Cancer Hospital at Rex Healthcare.
He lives in North Raleigh with his wife and has four children. He enjoys traveling and water sports with his family, foreign travel, as well as drawing and sculpture. Dr. Schwarz is also proficient in Spanish. He and his family attend Open Door Baptist Church.
Dr. Christopher Schwarz, MD
Gastroenterologist
10540 Ligon Mill Rd.
Suite 109
Wake Forest, NC 27587
Andrew Lange, MD, FACP provides comprehensive gastroenterology care at Wake Endoscopy. He is proud to provide a compassionate approach to patient care for the communities of Raleigh, Wake Forest, Cary, Clayton, and Wilson, North Carolina.
Dr. Lange grew up in Bloomington, Minnesota. He earned his undergraduate degree from Northwestern University and then went on to obtain a Master of Science in physiology from Georgetown University. He pursued medical training at Tulane University School of Medicine in New Orleans in the aftermath of Hurricane Katrina. He was elected to the Alpha Omega Alpha and Gold Humanism Medical Honor societies while studying at Tulane.
Following his graduation, Dr. Lange completed his internal medicine residency at Yale University. He remained on the medical staff at Yale-New Haven Hospital as an attending physician in hospital medicine. Dr. Lange completed a gastroenterology fellowship at the Lahey Clinic in the Boston area before joining Wake Endoscopy in 2022.
Dr. Lange’s clinical interests include eosinophilic esophagitis, colon cancer screening, inflammatory bowel disease, irritable bowel syndrome, and hepatology. He has authored multiple peer-reviewed manuscripts on topics in gastroenterology. He finds the most fulfillment when connecting with patients through active listening and compassionate care of the entire patient.
He lives in Cary with his wife and daughter. He is an avid fan of the Minnesota Vikings and Liverpool Football Club. In his spare time, he enjoys skiing, cycling, traveling, and toddler gymnastics classes with his daughter.
Dr. Andrew Lange, MD
Gastroenterologist
929 Kildaire Farm Road
Suite 105
Cary, NC 27511
Andrew Lange, MD, FACP provides comprehensive gastroenterology care at Wake Endoscopy. He is proud to provide a compassionate approach to patient care for the communities of Raleigh, Wake Forest, Cary, Clayton, and Wilson, North Carolina.
Dr. Lange grew up in Bloomington, Minnesota. He earned his undergraduate degree from Northwestern University and then went on to obtain a Master of Science in physiology from Georgetown University. He pursued medical training at Tulane University School of Medicine in New Orleans in the aftermath of Hurricane Katrina. He was elected to the Alpha Omega Alpha and Gold Humanism Medical Honor societies while studying at Tulane.
Following his graduation, Dr. Lange completed his internal medicine residency at Yale University. He remained on the medical staff at Yale-New Haven Hospital as an attending physician in hospital medicine. Dr. Lange completed a gastroenterology fellowship at the Lahey Clinic in the Boston area before joining Wake Endoscopy in 2022.
Dr. Lange’s clinical interests include eosinophilic esophagitis, colon cancer screening, inflammatory bowel disease, irritable bowel syndrome, and hepatology. He has authored multiple peer-reviewed manuscripts on topics in gastroenterology. He finds the most fulfillment when connecting with patients through active listening and compassionate care of the entire patient.
He lives in Cary with his wife and daughter. He is an avid fan of the Minnesota Vikings and Liverpool Football Club. In his spare time, he enjoys skiing, cycling, traveling, and toddler gymnastics classes with his daughter.
Dr. Andrew Lange, MD
Gastroenterologist
2601 Lake Dr
Suite 201
Raleigh, NC 27607
Jeffrey Mathews, MD, is committed to providing his patients with a wide range of gastroenterology services in a compassionate and timely manner at Gateway Gastroenterology, in Chesterfield, Missouri. He is board-certified in gastroenterology and hepatology.
Dr. Mathews is a life-long St. Louisan. He attended the University of Missouri – Kansas City Six-Year Medical School Program before going on to complete his fellowship in gastroenterology and hepatology at St. Louis University.
Making every effort to stay up-to-date on the latest advancements in his field, Dr. Mathews maintains active memberships with the American Society of Gastrointestinal Endoscopy and the American College of Gastroenterology.
At Gateway Gastroenterology, Dr. Mathews designs treatment plans unique to his patients' needs and concerns. He takes time to clearly communicate his treatment recommendations and encourages them to play an active role in their health care.
Dr. Mathews welcomes new patients to book an appointment by calling the practice or requesting an appointment online.
Dr. Jeffrey Mathews, MD
Gastroenterologist
121 Saint Luke's Center Drive
Suite 406, Building A
Chesterfield, MO 63017
Jeffrey Mathews, MD, is committed to providing his patients with a wide range of gastroenterology services in a compassionate and timely manner at Gateway Gastroenterology, in Chesterfield, Missouri. He is board-certified in gastroenterology and hepatology.
Dr. Mathews is a life-long St. Louisan. He attended the University of Missouri – Kansas City Six-Year Medical School Program before going on to complete his fellowship in gastroenterology and hepatology at St. Louis University.
Making every effort to stay up-to-date on the latest advancements in his field, Dr. Mathews maintains active memberships with the American Society of Gastrointestinal Endoscopy and the American College of Gastroenterology.
At Gateway Gastroenterology, Dr. Mathews designs treatment plans unique to his patients' needs and concerns. He takes time to clearly communicate his treatment recommendations and encourages them to play an active role in their health care.
Dr. Mathews welcomes new patients to book an appointment by calling the practice or requesting an appointment online.
Dr. Jeffrey Mathews, MD
Gastroenterologist
12855 N. 40 Drive
Suite 150, South Tower
Saint Louis, MO 63141
Jeffrey Mathews, MD, is committed to providing his patients with a wide range of gastroenterology services in a compassionate and timely manner at Gateway Gastroenterology, in Chesterfield, Missouri. He is board-certified in gastroenterology and hepatology.
Dr. Mathews is a life-long St. Louisan. He attended the University of Missouri – Kansas City Six-Year Medical School Program before going on to complete his fellowship in gastroenterology and hepatology at St. Louis University.
Making every effort to stay up-to-date on the latest advancements in his field, Dr. Mathews maintains active memberships with the American Society of Gastrointestinal Endoscopy and the American College of Gastroenterology.
At Gateway Gastroenterology, Dr. Mathews designs treatment plans unique to his patients' needs and concerns. He takes time to clearly communicate his treatment recommendations and encourages them to play an active role in their health care.
Dr. Mathews welcomes new patients to book an appointment by calling the practice or requesting an appointment online.
Dr. Jeffrey Mathews, MD
Gastroenterologist
1040 Old Des Peres Rd
Des Peres, MO 63131
As a board-certified gastroenterologist, Rajeev Ramgopal, MD, is skilled in providing high-quality, comprehensive care to patients experiencing a wide variety of gastrointestinal conditions. He is proud to be a part of the exceptional team at Gateway Gastroenterology, in Chesterfield, Missouri.
After finishing his undergraduate education at the University of Rochester in New York, Dr. Ramgopal returned to his hometown of Oklahoma City to obtain his medical degree at the University of Oklahoma. He went on to complete his Internal Medicine Residency training at Washington University in St. Louis, Missouri, and was selected to serve as a chief resident. He stayed at Washington University to complete his Gastroenterology and Hepatology Fellowship.
When he is not caring for patients at Gateway Gastroenterology, Dr. Ramgopal enjoys spending time with his wife and son. He also likes to stay active by running, scuba diving, and snowboarding. He looks forward to welcoming new and returning patients to the practice.
Dr. Rajeev Ramgopal, MD
Gastroenterologist
1040 Old Des Peres Rd
Des Peres, MO 63131
As a board-certified gastroenterologist, Rajeev Ramgopal, MD, is skilled in providing high-quality, comprehensive care to patients experiencing a wide variety of gastrointestinal conditions. He is proud to be a part of the exceptional team at Gateway Gastroenterology, in Chesterfield, Missouri.
After finishing his undergraduate education at the University of Rochester in New York, Dr. Ramgopal returned to his hometown of Oklahoma City to obtain his medical degree at the University of Oklahoma. He went on to complete his Internal Medicine Residency training at Washington University in St. Louis, Missouri, and was selected to serve as a chief resident. He stayed at Washington University to complete his Gastroenterology and Hepatology Fellowship.
When he is not caring for patients at Gateway Gastroenterology, Dr. Ramgopal enjoys spending time with his wife and son. He also likes to stay active by running, scuba diving, and snowboarding. He looks forward to welcoming new and returning patients to the practice.
Dr. Rajeev Ramgopal, MD
Gastroenterologist
12855 N. 40 Drive
Suite 150, South Tower
Saint Louis, MO 63141
As a board-certified gastroenterologist, Rajeev Ramgopal, MD, is skilled in providing high-quality, comprehensive care to patients experiencing a wide variety of gastrointestinal conditions. He is proud to be a part of the exceptional team at Gateway Gastroenterology, in Chesterfield, Missouri.
After finishing his undergraduate education at the University of Rochester in New York, Dr. Ramgopal returned to his hometown of Oklahoma City to obtain his medical degree at the University of Oklahoma. He went on to complete his Internal Medicine Residency training at Washington University in St. Louis, Missouri, and was selected to serve as a chief resident. He stayed at Washington University to complete his Gastroenterology and Hepatology Fellowship.
When he is not caring for patients at Gateway Gastroenterology, Dr. Ramgopal enjoys spending time with his wife and son. He also likes to stay active by running, scuba diving, and snowboarding. He looks forward to welcoming new and returning patients to the practice.
Dr. Rajeev Ramgopal, MD
Gastroenterologist
121 Saint Luke's Center Drive
Suite 406, Building A
Chesterfield, MO 63017
Board-certified gastroenterologist Richard Riegel, MD, sees patients at Gateway Gastroenterology in Chesterfield, Missouri. He strives to provide unparalleled care aimed at improving the digestive health of his patients.
A native of St. Louis, Dr. Riegel graduated with honors from the University of Missouri-Columbia School of Medicine. He then completed both his Internal Medicine internship and residency at Vanderbilt University in Nashville, Tennessee.
From Vanderbilt, Dr. Riegel returned to St. Louis to complete three additional years of medical training in the Division of Gastroenterology/Hepatology at Saint Louis University.
Dr. Riegel is an active member of the American College of Gastroenterology and the American Gastroenterological Association.
Dr. Riegel has participated in the education and training of medical house staff at St. John’s Mercy Medical Center. He has a diverse practice specializing in all aspects of general gastroenterology, hepatology, and endoscopic procedures. He has been in private practice since 1997. He is married with three wonderful children.
Dr. Richard Riegel, MD
Gastroenterologist
12855 N. 40 Drive
Suite 150, South Tower
Saint Louis, MO 63141
Board-certified gastroenterologist Richard Riegel, MD, sees patients at Gateway Gastroenterology in Chesterfield, Missouri. He strives to provide unparalleled care aimed at improving the digestive health of his patients.
A native of St. Louis, Dr. Riegel graduated with honors from the University of Missouri-Columbia School of Medicine. He then completed both his Internal Medicine internship and residency at Vanderbilt University in Nashville, Tennessee.
From Vanderbilt, Dr. Riegel returned to St. Louis to complete three additional years of medical training in the Division of Gastroenterology/Hepatology at Saint Louis University.
Dr. Riegel is an active member of the American College of Gastroenterology and the American Gastroenterological Association.
Dr. Riegel has participated in the education and training of medical house staff at St. John’s Mercy Medical Center. He has a diverse practice specializing in all aspects of general gastroenterology, hepatology, and endoscopic procedures. He has been in private practice since 1997. He is married with three wonderful children.
Dr. Richard Riegel, MD
Gastroenterologist
121 Saint Luke's Center Drive
Suite 406, Building A
Chesterfield, MO 63017
Board-certified gastroenterologist Richard Riegel, MD, sees patients at Gateway Gastroenterology in Chesterfield, Missouri. He strives to provide unparalleled care aimed at improving the digestive health of his patients.
A native of St. Louis, Dr. Riegel graduated with honors from the University of Missouri-Columbia School of Medicine. He then completed both his Internal Medicine internship and residency at Vanderbilt University in Nashville, Tennessee.
From Vanderbilt, Dr. Riegel returned to St. Louis to complete three additional years of medical training in the Division of Gastroenterology/Hepatology at Saint Louis University.
Dr. Riegel is an active member of the American College of Gastroenterology and the American Gastroenterological Association.
Dr. Riegel has participated in the education and training of medical house staff at St. John’s Mercy Medical Center. He has a diverse practice specializing in all aspects of general gastroenterology, hepatology, and endoscopic procedures. He has been in private practice since 1997. He is married with three wonderful children.
Dr. Richard Riegel, MD
Gastroenterologist
1040 Old Des Peres Rd
Des Peres, MO 63131
Jennifer Cadena
Gastroenterologist
3280 Joe Battle Blvd
El Paso, TX 79938
Jennifer Cadena
Gastroenterologist
1393 George Dieter Suite B, Texas
El Paso, TX 79936
Jennifer Cadena
Gastroenterologist
1300 Murchinson
Suite 180
El Paso, TX 79902