Elizabeth John, M.D.
Gastroenterology • Elizabeth, NJ • 3+ locations (Gastroenterology at Mountainside Medical Group in Montville and Glen Ridge) locations
About
Elizabeth John, M.D. is a gastroenterologist and internal medicine physician practicing at Mountainside Medical Group locations in Montville and Glen Ridge, New Jersey. Dr. John completed her medical degree from University of Central Florida College of Medicine, her internal medicine residency at Rutgers Robert Wood Johnson Medical School, and her gastroenterology fellowship at Methodist Dallas Medical Center in Texas. She speaks English, Malayalam, and Spanish.
Clinic Type
Gastroenterology
Address
Mountainside Medical Group – Gastroenterology, 170 Changebridge Rd. Unit C4 Montville, NJ 07045; Mountainside Medical Group – Gastroenterology, 311 Bay Ave. Suite 300B Glen Ridge, NJ 07028
Phone
(973) 884-3355
ardentcustomerservice@ensemblehp.com
Opening Hours
Not published — contact the clinic to confirm hours.
Services Offered
Insurance & Payment
—
Languages Spoken
FAQs
What are the physician’s specialties?
Gastroenterology, Internal Medicine
What languages does the physician speak?
English, Malayalam, Spanish
Awards & Accreditations
Social Media
Photos
What Patients Say
Overall sentiment across review platforms: positive
- Mountainside Medical Center official site: 4.9/5 (216 reviews)
- WebMD: 5.0/5 (2 reviews)
- Birdeye: 4.8/5 (38 reviews)
- U.S. News & World Report: 4.3/5 (6 reviews)
Patients praise
- kind and professional staff
- thorough and clear explanations
- good listening skills
- compassionate approach
- easy and low-stress experience
Common complaints
- occasional negative patient experience mentioned in aggregate reviews
"Love Dr Elizabeth John!!!"
— WebMD"Had an excellent experience with Dr. John. From the moment I walked into the clinic, I was treated with kindness and professionalism. Dr. John took the time to listen to my concerns, explained everything clearly, and made sure I was comfortable throughout the appointment."
— Birdeye"Dr. Elizabeth John is one of the best drs I’ve ever seen! Office staff and hospital staff during procedure were outstanding - cannot say enough positive things about her, her office staff and Mountainside Hospital team members"
— BirdeyeSynthesized from public review platforms as of Jul 11, 2026 — sources: [1][2][3][4].
In the News
- Why Colorectal Cancer Screening Is Critical—Especially Now - Mega Doctor News — Mar 20, 2026
- National Colorectal Cancer Awareness Month: Why Screening Saves Lives | Business News This Week — Mar 21, 2026
- National Colorectal Cancer Awareness Month: Why Screening Saves Lives | — Mar 21, 2026
- Hackensack Meridian Mountainside Medical Group adds team to expand pulmonary and sleep medicine services | ROI-NJ — Jul 9, 2026
Information sourced from the clinic's website as of July 11, 2026.
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