Browse Health
Internist, Endocrinologist (diabetes, hormones)
26 years of experience
Video profile
License & Identifications

A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).

Patient Reviews

Patient comments (7)

The overall average patient rating of Dr. John Merendino is Good. Dr. Merendino has been reviewed by 19 patients who have provided 7 comments. The rating is 3.5 out of 5 stars.

Patient Ratings
Ease of Appointment 4.1
Promptness 3.3
Courteous Staff 3.7
Accurate Diagnosis 3.9
Bedside Manner 3.2
Spends Time with Me 3.5
Follows Up After Visit 2.7

Specialties & Research

Dr. John Merendino, MD is board certified in Internal Medicine and Endocrinology, Diabetes & Metabolism.

  • He has special expertise in 7 areas:
  • Cholesterol Management
  • Diabetes
  • Diabetes Mellitus
  • Diabetes
  • Pituitary Diseases
  • Weight Loss
  • Weight loss (non-surgical)

Education & Awards

Dr. Merendino graduated from Yale University, New Haven. He has 2 awards.

Castle Connolly's Top Doctors™ (2012 - 2013)
Patients' Choice Award (2008 - 2010)


Dr. Merendino has 4 hospital affiliations:

  • Suburban Hospital 
  • Holy Cross Hospital 


  • Italian

> > > > Dr. John Merendino, MD

Similar doctors nearby

Dr. Geeta Raja

Internal Medicine
19 years experience
Bethesda, MD

Dr. Lee Pennington

Internal Medicine
34 years experience
Bethesda, MD

Dr. William Mullins

Internal Medicine
33 years experience
Bethesda, MD

Dr. Dave Chen

Internal Medicine
12 years experience
Bethesda, MD

Dr. Gary Roggin

Internal Medicine
46 years experience
Bethesda, MD

Dr. David Hirshfield

Internal Medicine
17 years experience
Bethesda, MD
Search All Similar Doctors
Additional Information
Dr. John Merendino MD is a male Internist, has 26 years of experience and practices in Internal Medicine and Endocrinology, Diabetes & Metabolism.
Where does Dr. John Merendino practice?
Dr. John Merendino has 2 office locations.
Dr. John Merendino practices Internal Medicine and Endocrinology, Diabetes & Metabolism near Bethesda, MD.
Additional practice locations include: Hagerstown, MD.
See Bethesda Internists and Bethesda Endocrinologists.