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311 providers

Availability last updated 10/23/2026

Healthcare specialist
Dr. Gabriel Ionescu, MD Gastroenterologist
332 South York Street
Gastonia, NC 28052
+2 more locations
About Dr. Gabriel Ionescu, MD

Dr. Eric Ibegbu is an Endobariatric gastroenterologist with offices in Kinston, Gastonia and Jacksonville, North Carolina. Dr. Ibegbu’s patients come from the entire state of North Carolina, Virginia, Washington D.C., New York, Atlanta, Tennessee, Ohio and even from around the world, to enjoy the truly world-class experience at Atlantic Medical Group. He offers a wide range of services to patients at Atlantic Medical Group and AMGWEIGHTLOSS including Spatz 3 balloon, ORBERA balloon, Apollo Revise and Apollo ESG, and treatment for DIVERSE gastrointestinal conditions.

Dr. Ibegbu earned his medical degree from the university of Nigeria and completed his internship, residency, and fellowship in gastroenterology and hepatology at the University of Florida Health Sciences center in Jacksonville, Florida. He also received advanced training in therapeutic endoscopy, including endoscopic ultrasound (EUS) and endoscopic retrograde cholangio-pancreatography (ERCP).

Throughout his career, Dr. Ibegbu has published extensively in the field of gastroenterology. His work is featured in several peer-reviewed journals, including World Journal of Gastroenterology and The American Journal of Gastroenterology. He has also been involved in the training of many other physicians across the country, and he serves as the speaker for several medical device and pharmaceutical companies.

He is an author, prolific writer and transformational speaker at national and international conferences on topics ranging from health and nutrition, the balance of life, developing medical businesses and entrepreneurs and wealth building to helping each person discover the answers to life’s most daunting questions: “who am I” and “why am I here”.
Helping you to reach your highest potential is Dr Ibegbu’s premier goal.

He is also a Diplomate of the American Board of Gastroenterology and the American Board of Internal Medicine. In addition, he serves as Assistant Professor of Medicine in the Gastroenterology Department of East Carolina University, and he’s been conferred the honor of Fellow of the American Society of Gastrointestinal Endoscopists and the American College of Gastroenterology.

For booking at your conference or event please send your request to: dribegbu@amg-gi.com or info@amg-gi.com

Practice
Atlantic Medical Group

Dr. Gabriel Ionescu, MD

Gastroenterologist

332 South York Street
Gastonia, NC 28052

Dr. Hardeep Singh, MD
Dr. Hardeep Singh, MD Gastroenterologist
1010 West La Veta Avenue
Suite 570
Orange, CA 92868
+1 more location
About Dr. Hardeep Singh, MD

Hardeep M. Singh, MD, FACP, AGAF, is board certified in Internal Medicine and Gastroenterology in Newport Beach, and Orange, California. He grew up in Orange County, California, and obtained his undergraduate and medical degrees from the University of Southern California.

While completing his internship and residency at Cedars Sinai Medical Center, Dr. Singh received the Leo Rigler Award for his academic achievement, and while completing his fellowship in Gastroenterology, he was named as the Kaiser Permanente Fellow of the Year.

Dr. Singh received additional training in Endoscopic Ultrasound at the University of Montreal. He has published research on ERCP techniques, Inflammatory Bowel Disease, management of liver transplant patients, autoimmune liver disease, and management of Irritable Bowel Syndrome.

Dr. Singh established his practice in 2007 at St. Joseph Hospital in Orange. He has focused on general gastroenterology, with specific interests in management of end-stage liver disease, treatment of Hepatitis B and C, Endoscopic ultrasound, and endoscopic management of gastrointestinal cancers. He is actively involved in the Liver Tumor Program at St. Joseph Hospital and started their Endoscopic Ultrasound Program in 2010.

Dr. Singh has received many accolades, including being recognized as a Physician of Excellence from 2011-2018 by the Orange County Medical Association. He was recently selected as one of the top gastroenterologists in the Western United States by Vitals.com. In 2015, Dr.Singh was recognized by the American Gastroenterological Association as an AGA Fellow, for his superior achievement in clinical practice. Dr. Singh received the Trademark Who's Who recognition as a top doctor in 2016.

In addition to his work at his practice, Dr. Singh considers community service a personal responsibility. Dr. Singh volunteers regularly at La Amistad family health center, providing care to the underserved in Orange, California. For years he has helped organize Access OC at St. Joseph's Hospital, a non-profit organization that helps to provide screening colonoscopies to uninsured patients.

Dr. Singh has been a contributor to multiple articles on gastrointestinal health, featured in Cosmopolitan, Yahoo.com, Good Housekeeping, and Runners World.

Additionally, Dr. Singh is the Medical Director of Endoscopy and the Medical Director for the Endoscopic Ultrasound/Biliary program at St.Joseph Hospital in Orange.

Dr. Singh is proud to provide care to patients in Newport Beach, and Orange, and offers flexible scheduling, including Saturday procedures.

Practice
Hardeep M. Singh, M.D.
Dr. Hardeep Singh, MD

Dr. Hardeep Singh, MD

Gastroenterologist

1010 West La Veta Avenue
Suite 570
Orange, CA 92868

Healthcare specialist
Dr. Valli Kodali, MD Gastroenterologist
7560 Carpenter Fire Station Road
Suite 303
Cary, NC 27519
About Dr. Valli Kodali, MD

About Us

Valli P. Kodali, MD, FACP, FACG, AGAF, is a board-certified gastroenterologist at Park Gastroenterology in Cary, North Carolina. He provides high-quality and compassionate care for a wide range of conditions, including abdominal pain, GERD, hemorrhoids, and more. Dr. Kodali also has expertise in colorectal cancer screening and prevention.

Dr. Kodali completed his training in internal medicine at Long Island College Hospital in Brooklyn, New York, and his fellowship training in gastroenterology at William Beaumont Hospital in Royal Oak, Michigan. He completed additional fellowship training in liver diseases at the University of Miami School of Medicine and advanced training in therapeutic endoscopy at the Mayo Clinic, Rochester, Minnesota.

In addition to his clinical practice, Dr. Kodali has conducted various scientific research projects and presented scientific papers at various national meetings. He has also published scientific papers in various peer-reviewed medical journals. Dr. Kodali conducted clinical research at Cumberland Research Associates for 20 years. He was awarded the American College of Gastroenterology Senior Fellow Award in 1993 and 1995. He was elected as a fellow with the American College of Physicians (FACP), the American College of Gastroenterology (FACG), and the American Gastroenterological Association (AGAF) in recognition of significant professional achievement and superior competence within the field of internal medicine and gastroenterology.

Dr. Kodali is a member of the American College of Gastroenterology, the American Gastroenterological Association, and the American Society for Gastrointestinal Endoscopy. He has been on various national gastroenterological and North Carolina Medical Society committees. He is married and has two sons.

 

Practice
Park Gastroenterology

Dr. Valli Kodali, MD

Gastroenterologist

7560 Carpenter Fire Station Road
Suite 303
Cary, NC 27519

Dr. Jeffrey Blonsky, MD
Dr. Jeffrey Blonsky, MD Gastroenterologist
4200 E Skelly Drive
Suite 100 & Suite 700
Tulsa, OK 74135
About Dr. Jeffrey Blonsky, MD

Adult Gastroenterology Associates

 

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Tulsa Endoscopy Center

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Practice
Adult Gastroenterology Associates & Tulsa Endoscopy Center
Dr. Jeffrey Blonsky, MD

Dr. Jeffrey Blonsky, MD

Gastroenterologist

4200 E Skelly Drive
Suite 100 & Suite 700
Tulsa, OK 74135

Dr. Douglas Kliewer, M D
Dr. Douglas Kliewer, M D Gastroenterologist
4200 E Skelly Drive
Suite 100 & Suite 700
Tulsa, OK 74135
About Dr. Douglas Kliewer, M D

Adult Gastroenterology Associates

 

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Tulsa Endoscopy Center

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Practice
Adult Gastroenterology Associates & Tulsa Endoscopy Center
Dr. Douglas Kliewer, M D

Dr. Douglas Kliewer, M D

Gastroenterologist

4200 E Skelly Drive
Suite 100 & Suite 700
Tulsa, OK 74135

Dr. Patrick Volak, M D
Dr. Patrick Volak, M D Gastroenterologist
4200 E Skelly Drive
Suite 100 & Suite 700
Tulsa, OK 74135
About Dr. Patrick Volak, M D

Adult Gastroenterology Associates

 

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Tulsa Endoscopy Center

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Practice
Adult Gastroenterology Associates & Tulsa Endoscopy Center
Dr. Patrick Volak, M D

Dr. Patrick Volak, M D

Gastroenterologist

4200 E Skelly Drive
Suite 100 & Suite 700
Tulsa, OK 74135

Dr. Matt Blankenship, MD
Dr. Matt Blankenship, MD Gastroenterologist
4200 E Skelly Drive
Suite 100 & Suite 700
Tulsa, OK 74135
About Dr. Matt Blankenship, MD

Adult Gastroenterology Associates

 

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Tulsa Endoscopy Center

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Practice
Adult Gastroenterology Associates & Tulsa Endoscopy Center
Dr. Matt Blankenship, MD

Dr. Matt Blankenship, MD

Gastroenterologist

4200 E Skelly Drive
Suite 100 & Suite 700
Tulsa, OK 74135

Dr. Markham Nightengale, M D
Dr. Markham Nightengale, M D Gastroenterologist
4200 E Skelly Drive
Suite 100 & Suite 700
Tulsa, OK 74135
About Dr. Markham Nightengale, M D

Adult Gastroenterology Associates

 

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Tulsa Endoscopy Center

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Practice
Adult Gastroenterology Associates & Tulsa Endoscopy Center
Dr. Markham Nightengale, M D

Dr. Markham Nightengale, M D

Gastroenterologist

4200 E Skelly Drive
Suite 100 & Suite 700
Tulsa, OK 74135

Dr. Brandon Conkling, DO
Dr. Brandon Conkling, DO Gastroenterologist
4200 E Skelly Drive
Suite 100 & Suite 700
Tulsa, OK 74135
About Dr. Brandon Conkling, DO

Adult Gastroenterology Associates

 

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Tulsa Endoscopy Center

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Practice
Adult Gastroenterology Associates & Tulsa Endoscopy Center
Dr. Brandon Conkling, DO

Dr. Brandon Conkling, DO

Gastroenterologist

4200 E Skelly Drive
Suite 100 & Suite 700
Tulsa, OK 74135

Healthcare specialist
Dr. Konstantin Vaizman, MD Gastroenterologist
5321 Flatlands Ave
Brooklyn, NY 11234

Dr. Konstantin Vaizman, MD

Gastroenterologist

5321 Flatlands Ave
Brooklyn, NY 11234

Dr. Raja Taunk, MD
Dr. Raja Taunk, MD Gastroenterologist
4175 North Hanson Court
Suite 304
Bowie, MD 20716
+3 more locations
About Dr. Raja Taunk, MD

Raja Taunk, MD, is board certified in internal medicine and gastroenterology. He provides a wide range of gastroenterology care at Anne Arundel Gastroenterology Associates, P.A. in Annapolis and Bowie, Maryland. 

Raised in New Jersey, Dr. Taunk graduated magna cum laude from Tufts University in Medford, Massachusetts, where he competed on the crew team. He then earned his medical degree at Rutgers New Jersey Medical School, where he was elected into the Alpha Omega Alpha Honor Medical Society. 

Dr. Taunk completed his internal medicine residency at New York-Presbyterian/Weill Cornell Medical Center, followed by fellowship training in gastroenterology at Lenox Hill Hospital in Manhattan. He has authored scientific papers and book chapters, conducted research, and lectured in the field of gastroenterology and hepatology. He was also featured and invited to speak on the Dr. Oz television show. 

Dr. Taunk holds a national leadership position on the ethics committee of the American Gastroenterological Association. His areas of interest include inflammatory bowel disease, colon cancer screening, acid reflux, and complex polypectomy.

Dr. Taunk is an avid traveler and has run with the bulls in Spain. He is a certified scuba diver, a novice golfer, and an avid sports fan.

Practice
Anne Arundel Gastroenterology Associates, P.A.
Dr. Raja Taunk, MD

Dr. Raja Taunk, MD

Gastroenterologist

4175 North Hanson Court
Suite 304
Bowie, MD 20716

Dr. Josh Rosenbloom, DO
Dr. Josh Rosenbloom, DO Gastroenterologist
1212 York Rd
Suite B101
Timonium, MD 21093
+2 more locations
About Dr. Josh Rosenbloom, DO

Josh Rosenbloom, DO, is a board-certified gastroenterologist and hepatologist at the Gastro Center of Maryland in Columbia, Lutherville, and Annapolis, Maryland. He is committed to providing his patients with the best possible personalized care in a calming and professional environment.

Dr. Rosenbloom received his medical degree from Des Moines University. After graduating, he continued his medical education at the St. John Providence health system through Michigan State University, completing a residency in internal medicine and a fellowship in gastroenterology. He also participated in published research studies on nutrition, weight loss, hepatitis C, and improving colonoscopy preparation.

Dr. Rosenbloom specializes in endoscopy , including colorectal cancer screenings, weight loss assistance, pain and symptom management, and nutrition. Given his interests in these areas , he has taken a special focus on performing both Orbera and Spatz bariatric balloon insertions

Approaching his 5th year at Gastro Center of Maryland, Dr. Rosenbloom is experienced in treating a wide array of gastrointestinal, liver, and pancreatic diseases. He most frequently treats GERD, irritable bowel syndrome (IBS), ulcerative colitis, Crohn’s disease, constipation, liver disease, celiac disease, among others.

Practice
Gastro Center of Maryland
Dr. Josh Rosenbloom, DO

Dr. Josh Rosenbloom, DO

Gastroenterologist

1212 York Rd
Suite B101
Timonium, MD 21093

Dr. Dhruv Lowe, MBBS
Dr. Dhruv Lowe, MBBS Gastroenterologist
3405 Olandwood Court
Suite 102
Olney, MD 20832
+3 more locations
About Dr. Dhruv Lowe, MBBS

Dhruv Lowe, MD, is an experienced, board-certified physician specializing in Gastroenterology, Hepatology, and Internal Medicine. He sees patients at Gastro Center of Maryland's location in Riverdale and Gaithersburg, Maryland.

With a passion for providing exceptional patient care, Dr. Lowe treats a wide range of gastrointestinal conditions, such as acid-reflux disease, irritable bowel syndrome, ulcerative colitis, Crohn's disease, eosinophilic esophagitis, gastritis, celiac disease, liver disease, and other common gastrointestinal ailments utilizing the latest advancements in the field.

Dr. Lowe approaches each patient as a unique individual, tailoring treatment plans to their specific needs. He values a patient-centered approach and strives to establish strong doctor-patient relationships built on trust, empathy, and respect. His goal is to empower patients with the information and resources they need to make informed decisions about their health.

Dr. Lowe earned his medical degree from Maulana Aazad Medical College in New Delhi, India, a leading medical institute in the country. Following that, he completed his residency in Internal Medicine and a fellowship in Gastroenterology and Hepatology at SUNY Upstate Medical University. His extensive training has equipped him with a comprehensive understanding of the field and a commitment to providing evidence-based medical care.

Passionate about advancing medical knowledge, Dr. Lowe has presented at national gastroenterology conferences and has authored numerous review articles and clinical research papers in esteemed peer-reviewed publications.

During his free time, Dr. Lowe enjoys playing tennis, hiking and exploring new food places with his wife and kids.

If you're seeking compassionate, personalized care for your gastrointestinal health, Dr. Lowe is ready to provide exceptional medical expertise and support on your journey to wellness.

Practice
Gastro Center of Maryland
Dr. Dhruv Lowe, MBBS

Dr. Dhruv Lowe, MBBS

Gastroenterologist

3405 Olandwood Court
Suite 102
Olney, MD 20832

Dr. Eduardo Castillo, MD
Dr. Eduardo Castillo, MD Gastroenterologist
7120 Minstrel Way
Suite #100 & 211
Columbia, MD 21045
+2 more locations
About Dr. Eduardo Castillo, MD

Eduardo Castillo, MD, is a board-certified physician, with specialties in both gastroenterology and hepatology. Dr. Castillo is committed to treating his patients with an exemplary level of care in a family atmosphere and is proud to offer his skills at the Gastro Center of Maryland located in Columbia and Olney, Maryland.

Originally from Lima, Peru, Dr. Castillo received his medical degree from Lima’s prestigious Universidad Peruana Cayetano Heredia. He then traveled to Detroit, Michigan, for an internship, residency, and fellowship at the Henry Ford Hospital, where he served as chief medical resident of internal medicine and chief fellow for gastroenterology.

Dr. Castillo has conducted a wide range of research on digestive issues, as well as liver cancer, cirrhosis, microscopic colitis, and peptic ulcer disease. In addition to being widely published, Dr. Castillo has presented his findings at national medical conferences. He’s also a member of the American Medical Association, the American Gastroenterological Association, and the American College of Gastroenterology, and is board-certified in internal medicine, gastroenterology, and hepatology.

Dr. Castillo has a special interest in treating and preventing colon cancer, as well as treating hepatitis C, GERD, inflammatory bowel disease, and clostridium difficile infection.

Practice
Gastro Center of Maryland
Dr. Eduardo Castillo, MD

Dr. Eduardo Castillo, MD

Gastroenterologist

7120 Minstrel Way
Suite #100 & 211
Columbia, MD 21045

Dr. Khadijat Balogun, MD
Dr. Khadijat Balogun, MD Gastroenterologist
3510 Old Washington Rd.
Suite 201
Waldorf, MD 20602
+1 more location
About Dr. Khadijat Balogun, MD

Khadijat Balogun, MD, is a gastroenterologist at GI Associates of Maryland. She offers compassionate and effective care to patients at the Waldorf, Maryland, office. 

Dr. Balogun obtained her medical degree from SUNY Downstate Medical Center in Brooklyn, New York. She completed her internal medicine residency at SUNY Downstate Medical Center and a three-year fellowship program at Albany Medical Center in New York. 

Dr. Balogun is board-certified in internal medicine as well as gastroenterology. She is a professional member of the American Gastroenterological Association, the American College of Gastroenterology, and the American Society for Gastrointestinal Endoscopy.

Dr. Balogun cares for patients with a wide range of issues, including colon cancer screening, gastroesophageal reflux disease, Barrett’s esophagus, liver disease, women’s health, irritable bowel syndrome, and inflammatory bowel disease (Crohn’s disease and ulcerative colitis).

Dr. Balogun aims to provide the highest medical care to all her patients in a safe and friendly environment.

Practice
GI Associates of Maryland
Dr. Khadijat Balogun, MD

Dr. Khadijat Balogun, MD

Gastroenterologist

3510 Old Washington Rd.
Suite 201
Waldorf, MD 20602

Dr. Gowri Kularatna, MD
Dr. Gowri Kularatna, MD Internist
3510 Old Washington Rd.
Suite 201
Waldorf, MD 20602
+1 more location
About Dr. Gowri Kularatna, MD

Gowri Kularatna, MD, specializes in gastroenterology at GI Associates of Maryland in Waldorf, Maryland. She has years of experience in the medical field and uses her knowledge to diagnose and treat patients. 

Dr. Kularatna attended Emory University in Atlanta, Georgia, obtaining her bachelor’s degree in biology. She then received her medical degree from the University of Maryland School of Medicine in Baltimore.  

Dr. Kularatna completed her internal medicine residency at Boston Medical Center in Massachusetts and a gastroenterology fellowship at The Barnes-Jewish Hospital through Washington University in St. Louis, Missouri. 

Dr. Kularatna is board-certified in internal medicine and gastroenterology. She is also a professional member of the American College of Gastroenterology and the American Gastroenterology Association.

At GI Associates of Maryland in Waldorf, Dr. Kularatna works closely with patients to ensure she provides expert care. She has a comfortable office setting and takes an evidence-based approach to treat her patients. 

Practice
GI Associates of Maryland
Dr. Gowri Kularatna, MD

Dr. Gowri Kularatna, MD

Internist

3510 Old Washington Rd.
Suite 201
Waldorf, MD 20602

Dr. Lornette Mills, MD
Dr. Lornette Mills, MD Gastroenterologist
3510 Old Washington Rd.
Suite 201
Waldorf, MD 20602
+1 more location
About Dr. Lornette Mills, MD

Lornette Mills, MD, is a respected gastroenterologist serving patients at GI Associates of Maryland in Waldorf, Maryland. She specializes in internal medicine and gastroenterology and enjoys working closely with her patients to ensure optimal health. 

In 1993, Dr. Mills received her medical degree from the Jacobs School Of Medicine And Biomedical Sciences in Buffalo, New York. In 1996, she completed her internal medicine residency program at George Washington University Hospital in Washington, DC. She then finished her gastroenterology fellowship program at SUNY Health Science Center in Brooklyn in 1999. 

Before joining her current practice, Dr. Mills practiced for two years in Prince Frederick, Maryland. This experience makes her an excellent addition to the GI Associates of Maryland team. 

At the practice, Dr. Mills provides compassionate and effective care. She takes the time to listen to her patients and doesn't rush through her appointments. You're in good hands with Dr. Mills. 

Practice
GI Associates of Maryland
Dr. Lornette Mills, MD

Dr. Lornette Mills, MD

Gastroenterologist

3510 Old Washington Rd.
Suite 201
Waldorf, MD 20602

Healthcare specialist
Dr. Zachary Marwil, MD Gastroenterologist
306 Hempstead Ave
Malverne, NY 11565
+1 more location
About Dr. Zachary Marwil, MD

Zachary Marwil, MD, is a highly respected and sought-after gastroenterologist on Long Island. Dr. Marwil is a partner at Gastrointestinal Specialists of Long Island (GISLI) and also serves as the managing director at the Northwell Health Endoscopy Center of Long Island. He is board-certified in both gastroenterology and internal medicine.

Dr. Marwil attended the University of Michigan as an undergraduate and earned his Doctor of Medicine from St. George’s University School of Medicine.

Dr. Marwil completed his residency in internal medicine at the State University of New York (SUNY) Downstate Medical Center, where he also had the honor of serving as the chief resident in the department of medicine. He continued his training as a fellow and then as chief fellow in the division of gastroenterology and hepatology at SUNY Downstate Medical Center.

Both during his post-graduate training and as an attending, Dr. Marwil has authored several research abstracts and journal articles. His findings have been published in peer-reviewed journals and presented at national meetings. 

Having held several teaching positions, Dr. Marwil is currently on faculty as an Assistant Professor at the Zucker School of Medicine at Hofstra. He is a member of the American College of Gastroenterology, the American Society of Gastrointestinal Endoscopy, and the New York Society for Gastroenterology and Endoscopy.

Dr. Marwil takes great pride in offering state-of-the-art gastroenterology care for people of all ages and strives to treat each patient with the care and empathy they deserve. When not in the office, Dr. Marwil stays active through mountain biking, skiing, golf, and tennis. He mostly enjoys spending time with his wife and two daughters.

Practice
Gastrointestinal Specialists of Long Island

Dr. Zachary Marwil, MD

Gastroenterologist

306 Hempstead Ave
Malverne, NY 11565