Dr. Gregory Harold Johnson MD is a male Internist, has 38 years of experience and practices in Gastroenterology.
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).

Learn more about Dr. Gregory Johnson:

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  1. Qualifications
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Patient Reviews

  • Currently 2 of 4 stars
Patient comments (3)

The overall average patient rating of Dr. Gregory Johnson is Satisfactory. Dr. Johnson has been reviewed by 7 patients who have provided 3 comments. The rating is 2 out of 4 stars.

Patient Ratings
Ease of Appointment 2.8
  • Currently 2.8333333333333 of 4 stars
Promptness 2.5
  • Currently 2.5 of 4 stars
Courteous Staff 2.7
  • Currently 2.7142857142857 of 4 stars
Accurate Diagnosis 2.0
  • Currently 2 of 4 stars
Bedside Manner 1.8
  • Currently 1.8333333333333 of 4 stars
Spends Time with Me 2.0
  • Currently 2 of 4 stars
Follows Up After Visit 1.3
  • Currently 1.3333333333333 of 4 stars

Specialties & Research

Dr. Gregory Johnson, MD is board certified in Gastroenterology.

Education & Awards

Dr. Johnson graduated from Northwestern University, Chicago. He has 1 awards.

Castle Connolly's Top Doctors™ (2012 - 2013)


Dr. Johnson has 2 hospital affiliations:

  • Los Robles Hospital and Medical Center 
  • Los Robles Reg Med Ctr, Thousand Oaks, Ca 

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Additional Information
Where does Dr. Gregory H. Johnson practice?
Dr. Gregory Johnson practices Gastroenterology near Thousand Oaks, CA.
See Thousand Oaks Gastroenterologists.