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Availability last updated 04/24/2025
Advanced Gastroenterology & Liver Institute in Anaheim, Santa Ana, Fullerton, 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.
Tahmina Haq, MD
Gastroenterologist
17822 Beach Blvd
Suite 201
Huntington Beach, CA 92647
Hardeep M. Singh, MD, FACP, AGAF, is board certified in Internal Medicine and Gastroenterology in Irvine, 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 Irvine, Newport Beach, and Orange, and offers flexible scheduling, including Saturday procedures.
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Dr. Hardeep Singh, MD
Gastroenterologist
361 Hospital Rd
#227
Newport Beach, CA 92663
Dr. Robert M. Webman runs a private practice in the Hawthorne, Torrance, and San Pedro, California, areas where he practices as a Gastroenterologist, Internist and Primary Care Doctor. He provides extensive patient management and medical care to clients in both the hospital and office environment. Some of the procedures Dr. Webman performs include: colonoscopy, capsule endoscopy, liver biopsy, polyp removal, upper endoscopy, flexible signoidoscopy, ERCP, and hemorrhoid banding.
The Consumers’ Research Council of America named Dr. Robert M. Webman as one of the country’s top gastroenterologists. Dr. Webman also performs as an Associate Professor of Clinical Medicine at Harbor-UCLA Medical Center. An expert in liver and digestive disorders, pancreatic disease, and diagnostic endoscopy, Dr. Webman has received Certificates of Achievement for Volunteer Clinical Services and the 1999 Educator of the Year award from the hospital. Additionally, Dr. Webman lectures on nutrition and cancer at schools and hospitals.
Dr. Robert M. Webman studied at the University of Massachusetts, Amherst, where he graduated Phi Beta Kappa. He received his medical degree from the University of Massachusetts Medical School in 1978. Dr. Webman completed his internal medicine residency at Good Samaritan Hospital in Los Angeles and a gastroenterology fellowship at Tulane Medical Center in New Orleans. Dr. Robert M. Webman belongs to the Los Angeles County Medical Association, the American College of Gastroenterology, and the California Medical Association.He also donates to the American Breast Cancer Foundation, the Jewish National Fund, and The Children’s Hospital Foundation. In his free time, Dr. Webman spending time with his family, playing tennis, film, and travel.
Dr. Robert Webman, MD
Gastroenterologist
4305 Torrance Blvd.
Suite 406
Torrance, CA 90503
Morris Taub, MD
Gastroenterologist
3720 Lomita Blvd #100
Torrance, CA 90505
Robert Webman, MD
Gastroenterologist
3720 Lomita Blvd #100
Torrance, CA 90505
Pejman Solaimani, MD
Gastroenterologist
6927 Brockton Ave
Ste 2a
Riverside, CA 92506
Dr. Robert M. Webman runs a private practice in the Hawthorne, Torrance, and San Pedro, California, areas where he practices as a Gastroenterologist, Internist and Primary Care Doctor. He provides extensive patient management and medical care to clients in both the hospital and office environment. Some of the procedures Dr. Webman performs include: colonoscopy, capsule endoscopy, liver biopsy, polyp removal, upper endoscopy, flexible signoidoscopy, ERCP, and hemorrhoid banding.
The Consumers’ Research Council of America named Dr. Robert M. Webman as one of the country’s top gastroenterologists. Dr. Webman also performs as an Associate Professor of Clinical Medicine at Harbor-UCLA Medical Center. An expert in liver and digestive disorders, pancreatic disease, and diagnostic endoscopy, Dr. Webman has received Certificates of Achievement for Volunteer Clinical Services and the 1999 Educator of the Year award from the hospital. Additionally, Dr. Webman lectures on nutrition and cancer at schools and hospitals.
Dr. Robert M. Webman studied at the University of Massachusetts, Amherst, where he graduated Phi Beta Kappa. He received his medical degree from the University of Massachusetts Medical School in 1978. Dr. Webman completed his internal medicine residency at Good Samaritan Hospital in Los Angeles and a gastroenterology fellowship at Tulane Medical Center in New Orleans. Dr. Robert M. Webman belongs to the Los Angeles County Medical Association, the American College of Gastroenterology, and the California Medical Association.He also donates to the American Breast Cancer Foundation, the Jewish National Fund, and The Children’s Hospital Foundation. In his free time, Dr. Webman spending time with his family, playing tennis, film, and travel.
Dr. Robert Webman, MD
Gastroenterologist
1360 West 6th Street
Suite 185
San Pedro, CA 90732
Mayur Trivedi, MD
Gastroenterologist
16350 Ventura Blvd
D539
Encino, CA 91436
Edward Wong, MD
Gastroenterologist
6705 Columbia Way
Lancaster, CA 93536
Edward Wong, MD
Gastroenterologist
43830 10th St W,
Lancaster, CA 93534
Edward Wong, MD
Gastroenterologist
2010 W. Ave K
Suite 226
Lancaster, CA 93536
Edward Wong, MD
Gastroenterologist
1600 West Ave J
Lancaster, CA 93534
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