Dr. Farhad Nassiri Afshar is a board-certified internist based in Irvine, California and founder of Afshar Medical Group. With more than 20 years of experience caring for adults in hospitals and outpatient clinics, he provides comprehensive primary care with a focus on heart disease prevention, hypertension, diabetes, dyslipidemia, obesity, thyroid disorders, and chronic kidney disease.Dr. Nassiri Afshar earned his medical degree from Tehran University of Medical Sciences and completed his Internal Medicine residency at the University of British Columbia in Vancouver, Canada. His background includes work as a general practitioner and hospitalist, managing complex patients with coronary artery disease, heart failure, stroke, venous thromboembolism, and sleep apnea.At Afshar Medical Group in Irvine, he combines evidence-based medicine with lifestyle counseling and modern digital tools, including telehealth and advanced analytics, to deliver convenient, high-quality care. He emphasizes clear communication, preventive strategies, and long-term partnerships with his patients to help them live healthier, longer, and more active lives. Dr. Nassiri Afshar is rated as an Experienced provider by MediFind in the treatment of Irritable Bowel Syndrome (IBS). His top areas of expertise are High Cholesterol, Hypertension, Asthma, and Type 2 Diabetes (T2D).

Duke Nguyen is a Gastroenterologist in Fountain Valley, California. Dr. Nguyen is rated as an Advanced provider by MediFind in the treatment of Irritable Bowel Syndrome (IBS). His top areas of expertise are Irritable Bowel Syndrome (IBS), Gastroesophageal Reflux Disease (GERD), Gastritis, Gastrectomy, and Colonoscopy.

Javed Sadiq is a Gastroenterologist in Santa Ana, California. Dr. Sadiq has been practicing medicine for over 16 years and is rated as an Advanced provider by MediFind in the treatment of Irritable Bowel Syndrome (IBS). His top areas of expertise are Familial Adenomatous Polyposis, Gas Bloat Syndrome, Gastritis, Endoscopy, and Gastrostomy.

Richard Quist is a Gastroenterologist in Newport Beach, California. Dr. Quist is rated as a Distinguished provider by MediFind in the treatment of Irritable Bowel Syndrome (IBS). His top areas of expertise are Gastroesophageal Reflux Disease (GERD), Irritable Bowel Syndrome (IBS), Diverticular Disease, Colonoscopy, and Gastrectomy.

Ashish Chogle is a Pediatric Gastroenterologist in Orange, California. Dr. Chogle is rated as a Distinguished provider by MediFind in the treatment of Irritable Bowel Syndrome (IBS). His top areas of expertise are Irritable Bowel Syndrome (IBS), Hirschsprung Disease, Total Intestinal Aganglionosis, and Mast Cell Activation Syndrome (MCAS). Dr. Chogle is currently accepting new patients.

Babak Firoozi is a Gastroenterologist in Fountain Valley, California. Dr. Firoozi is rated as an Experienced provider by MediFind in the treatment of Irritable Bowel Syndrome (IBS). His top areas of expertise are Hemorrhoids, Familial Adenomatous Polyposis, Turcot Syndrome, and Gardner Syndrome.

Nancy Han is a Gastroenterologist in Fountain Valley, California. Dr. Han is rated as an Experienced provider by MediFind in the treatment of Irritable Bowel Syndrome (IBS). Her top areas of expertise are Hemorrhoids, Familial Adenomatous Polyposis, Turcot Syndrome, and Gardner Syndrome.

Vincent Kao is a Gastroenterologist in Fountain Valley, California. Dr. Kao has been practicing medicine for over 16 years and is rated as an Experienced provider by MediFind in the treatment of Irritable Bowel Syndrome (IBS). His top areas of expertise are Hemorrhoids, Familial Adenomatous Polyposis, Diverticular Disease, and Gardner Syndrome.

Lizhou Huang is a Gastroenterologist in Fountain Valley, California. Dr. Huang is rated as an Experienced provider by MediFind in the treatment of Irritable Bowel Syndrome (IBS). His top areas of expertise are Familial Adenomatous Polyposis, Gardner Syndrome, Turcot Syndrome, Hemorrhoids, and Ileostomy.

Erick Argueta is a Gastroenterologist in Fountain Valley, California. Dr. Argueta is rated as an Experienced provider by MediFind in the treatment of Irritable Bowel Syndrome (IBS). His top areas of expertise are Familial Adenomatous Polyposis, Turcot Syndrome, Gardner Syndrome, Gastroesophageal Reflux Disease (GERD), and Endoscopy.

John Wang is a primary care provider, practicing in Internal Medicine in Fountain Valley, California. Dr. Wang is rated as an Experienced provider by MediFind in the treatment of Irritable Bowel Syndrome (IBS). His top areas of expertise are CAPOS Syndrome, Type 2 Diabetes (T2D), Osteomyelitis in Children, Gastrostomy, and Hernia Surgery.

Betty Yu is a primary care provider, practicing in Family Medicine in Fountain Valley, California. Dr. Yu is rated as an Experienced provider by MediFind in the treatment of Irritable Bowel Syndrome (IBS). Her top areas of expertise are Hypoparathyroidism, Homocystinuria, Methylmalonic Acidemia with Homocystinuria, and Inborn Amino Acid Metabolism Disorder.

Nicole Chow is a primary care provider, practicing in Internal Medicine in Fountain Valley, California. Dr. Chow is rated as an Experienced provider by MediFind in the treatment of Irritable Bowel Syndrome (IBS). Her top areas of expertise are Homocystinuria, Methylmalonic Acidemia with Homocystinuria, Acne, and Cirrhosis.

Angela Whitaker is a primary care provider, practicing in Internal Medicine in Fountain Valley, California. Dr. Whitaker has been practicing medicine for over 9 years and is rated as an Experienced provider by MediFind in the treatment of Irritable Bowel Syndrome (IBS). Her top areas of expertise are Homocystinuria, Methylmalonic Acidemia with Homocystinuria, Inborn Amino Acid Metabolism Disorder, and Cirrhosis.

Tamara Fogarty is a primary care provider, practicing in Internal Medicine in Fountain Valley, California. Dr. Fogarty is rated as an Experienced provider by MediFind in the treatment of Irritable Bowel Syndrome (IBS). Her top areas of expertise are Homocystinuria, Methylmalonic Acidemia with Homocystinuria, Hypoparathyroidism, and Inborn Amino Acid Metabolism Disorder.

Janice Rivelle is a primary care provider, practicing in Internal Medicine in Fountain Valley, California. Dr. Rivelle is rated as an Experienced provider by MediFind in the treatment of Irritable Bowel Syndrome (IBS). Her top areas of expertise are Cirrhosis, Familial Combined Hyperlipidemia, Xanthoma, and Homocystinuria.

Jack Middlebrooks is a primary care provider, practicing in Internal Medicine in Fountain Valley, California. Dr. Middlebrooks is rated as an Experienced provider by MediFind in the treatment of Irritable Bowel Syndrome (IBS). His top areas of expertise are Homocystinuria, Methylmalonic Acidemia with Homocystinuria, Inborn Amino Acid Metabolism Disorder, and Cirrhosis.

Cambria Hembree is a primary care provider, practicing in Internal Medicine in Fountain Valley, California. Dr. Hembree is rated as an Experienced provider by MediFind in the treatment of Irritable Bowel Syndrome (IBS). Her top areas of expertise are Homocystinuria, Methylmalonic Acidemia with Homocystinuria, Inborn Amino Acid Metabolism Disorder, and Cirrhosis.

David Stanton is a Gastroenterologist in Fountain Valley, California. Dr. Stanton is rated as an Experienced provider by MediFind in the treatment of Irritable Bowel Syndrome (IBS). His top areas of expertise are Diverticular Disease, Gastroesophageal Reflux Disease (GERD), Familial Adenomatous Polyposis, and Turcot Syndrome.

Huafeng Shen is a Gastroenterologist in Fountain Valley, California. Dr. Shen is rated as an Experienced provider by MediFind in the treatment of Irritable Bowel Syndrome (IBS). His top areas of expertise are Portal Hypertension, Familial Adenomatous Polyposis, Childhood Volvulus, Colonoscopy, and Endoscopy.