Browse Health
Surgical Specialist
43 years of experience
Accepting new patients
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 (0)

The overall average patient rating of Dr. John Harmon is Average. Dr. Harmon has been reviewed by 2 patients who have provided 0 comments. The rating is 3 out of 5 stars.

Patient Ratings
Ease of Appointment 4.0
Promptness 3.0
Courteous Staff 3.0
Accurate Diagnosis 2.0
Bedside Manner 1.0
Spends Time with Me 1.0
Follows Up After Visit 2.0

Specialties & Research

Dr. John Harmon, MD is board certified in Surgery.

  • He has special expertise in 20 areas:
  • Acid Reflux Disease (Gastroesophageal Reflux / GERD)
  • Barrett Esophagus
  • Blast Injuries
  • Breast Cancer
  • Breast Diseases
  • Burns
  • Cancer
  • Esophageal Diseases
  • Esophagus Cancer (Esophogeal Neoplasm)
  • Galbladder Removal (Cholecystectomy)
  • Gallstones
  • Gene Therapy
  • Glandular Cancer (Adenocarcinoma)
  • Hernia
  • Infarction
  • Metastatic Breast Cancer
  • Squamous Cell Carcinoma
  • Stomach Cancer
  • Thyroid Diseases
  • Wounds and Injuries

Education & Awards

Dr. Harmon graduated from Columbia University, New York. He has 2 awards.

One of America's Leading Experts on:
Esophagus Cancer (Esophogeal Neoplasm)
Glandular Cancer (Adenocarcinoma)


Dr. Harmon has 4 hospital affiliations:

  • Johns Hopkins Bayview Medical Center 
  • The Johns Hopkins Hospital 


  • French
  • English

> > > > Dr. John Harmon, MD

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Additional Information
Dr. John Watson Harmon MD is a male Surgeon, has 43 years of experience and practices in Surgery.
Where does Dr. John W. Harmon practice?
Dr. John Harmon has 1 office location.
Dr. John Harmon practices Surgery near Baltimore, MD.
See Baltimore Surgeons.