S. Charles Oh, M.D.

4.1 out of 5 

“I want my patients to enjoy the best health possible. Listening, understanding, and educating are central to my philosophy of care.”

Accepting New Patients: 
Glen Ridge
311 Bay Avenue
Suite 300
Glen Ridge, NJ 07028

S. Charles Oh, M.D., specializes in the treatment of digestive diseases, including anorectal conditions, hemorrhoids, colonic neoplasms, cancer, polyps, diverticulosis, esophageal reflux, gastritis, gastroesophageal reflux disease (GERD), hepatitis, hiatal hernia, inflammatory bowel disease (IBD), ulcerative colitis, and Crohn’s disease.

Dr. Oh received his medical degree from Mt. Sinai School of Medicine. He completed his residency in Internal Medicine at Beth Israel Medical Center/ Mount Sinai School of Medicine and a Clinical Fellowship in Gastroenterology at Lahey Clinic Medical Center/Beth Israel Deaconess Hospital. He is board certified in gastroenterology by the American Board of Internal Medicine.

Dr. Oh has been practicing medicine for nearly three decades. Known for his warm and approachable style, he was recently named a Top Doctor by NJ Monthly Magazine.

Featured Reviews



Dr. S. Charles Oh stands out as an exceptional gastroenterologist, a rare breed who genuinely listens to his patients and provides a comprehensive analysis. The office staff, particularly Christine, was excellent, guiding me through every step. On the procedure day, the women at Mountainside Medical were incredibly kind and attentive to my needs, making the entire experience a breeze. Dr. Oh is undoubtedly the top choice.

   — Luis Gonzalez


Extremely knowledgeable and has a great bedside manner

   — Jeanne Meyers


Dr. Oh is responsive and sensitive to my needs as a patient. He explains test findings well and answers questions thoroughly.

   — Dana Gellis


Friendly staff. Dr Oh is polite and listens to you with understanding.

   — Charles Humphrey


Recently had another colonoscopy, he is extremely personable and easy to speak with. He is my new gastroenterologist as my doctor of over 20 years is now retired.

   — Fay Clark


My experience with Dr. Oh has been wonderful. Dr. Oh is very professional and knowledgeable. He is very patient in explaining all the concerns and questions I had. He is very thorough and his assistant calls to make sure everything is alright after my procedure.

   — Edmund Auw

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