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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 (3)

The overall average patient rating of Dr. Johnasan Gregory is Good. Dr. Gregory has been reviewed by 9 patients who have provided 3 comments. The rating is 3.5 out of 5 stars.

Patient Ratings
Ease of Appointment 4.5
Promptness 4.2
Courteous Staff 3.8
Accurate Diagnosis 3.7
Bedside Manner 3.2
Spends Time with Me 3.4
Follows Up After Visit 3.2

Specialties & Research

Dr. Johnasan Gregory, MD is board certified in Internal Medicine and Gastroenterology.

  • He has special expertise in 5 areas:
  • Acid Reflux Disease (Gastroesophageal Reflux / GERD)
  • Constipation
  • Hepatitis C
  • Irritable Bowel Syndrome (IBS)
  • Ulcerative Colitis

Education & Awards

Dr. Gregory graduated from The University of Texas at San Antonio. He has 2 awards.

Patients' Choice Award (2014)
On-Time Doctor Award (2014)


Dr. Gregory has 1 hospital affiliations:

  • Longview Regional Medical Center 


  • Spanish

> > > > Dr. Johnasan Gregory, MD

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Additional Information
Dr. Johnasan M Gregory MD is a male Internist, has 27 years of experience and practices in Internal Medicine and Gastroenterology.
Where does Dr. Johnasan M. Gregory practice?
Dr. Johnasan Gregory has 2 office locations.
Dr. Johnasan Gregory practices Internal Medicine and Gastroenterology near Longview, TX.
Additional practice locations include: Sherman, TX.
See Longview Internists and Longview Gastroenterologists.