John Wikle, MD
Internist
4950 Barranca Pkwy Ste 207
Irvine, CA 92604
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638 providers
Availability last updated 03/10/2026
John Wikle, MD
Internist
4950 Barranca Pkwy Ste 207
Irvine, CA 92604
Shirin Afrasiabi, MD Inc
Internist
4950 Barranca Pkwy
Ste 308
Irvine, CA 92694
Anooshiravan Hami, MD
Pulmonologist
12072 Trask Ave
Garden Grove, CA 92843
Selma Prechel, OD
Internist
12072 Trask Ave
Garden Grove, CA 92843
Selma Prechel, OD
Internist
15022 Pacific Street
Midway City, CA 92655
Selma Prechel, OD
Internist
13075 Blackbird St
Garden Grove, CA 92843
Shawn Hamilton, MD, has more than 20 years of experience as a board-certified physician in internal medicine. She practices at Spruce Medical Group in Irvine, California, and is affiliated with Hoag Memorial Hospital Presbyterian, located in Newport and in Irvine, California. Dr. Hamilton speaks many languages, including Chinese (Mandarin), Taiwanese, and some medical Spanish.
Dr. Hamilton graduated from the David Geffen School of Medicine at UCLA and completed her residency in Internal Medicine at the Charles R. Drew University of Science and Medicine in Los Angeles. To reach as many people in her diverse community as possible, she accepts a wide range of insurances, including Cal-Optima, Medicare, Aetna PPO, Blue Cross Prudent Buyer PPO, and United Health PPO.
As a primary care physician, Dr. Hamilton sees her role as addressing the concerns of the men and women who visit her office, assessing their symptoms, and treating them, or if necessary, referring them to a subspecialist. She prides herself on minimizing any delay in calling in medications and processing referrals for lab and radiology orders, which has earned her accolades for running an efficient, caring practice and the Top Doctors award of Orange Coast Magazine.
Shawn Hamilton Md Inc
Internist
4902 Irvine Center Dr
Suite 105
Irvine, CA 92604
Anooshiravan Hami, MD
Pulmonologist
12681 Haster St
Garden Grove, CA 92840
Dr. John Lee, MD
Internist
1051 Bryan Ave
Tustin, CA 92780
Selma Prechel, OD
Internist
10507 Garden Grove Blvd
Garden Grove, CA 92843
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 maintains an adenoma detection rate (ADR) well above the national benchmark of 25%, as established by leading Gastroenterology societies and published guidelines from the ASGE, ACG, and peer-reviewed medical journals. This reflects her commitment to high-quality, thorough, and preventive patient care.
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
801 N. Tustin Ave.
Ste 700
Santa Ana, CA 92705
Selma Prechel, OD
Internist
7571 Westminster Blvd
Westminster, CA 92683
Selma Prechel, OD
Internist
13800 Arizona St Suite 200
Westminster, CA 92683