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).
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- Currently 2 of 4 stars
The overall average patient rating of Dr. Gregory Johnson is Satisfactory.
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Specialties & Research
Dr. Gregory Johnson, MD is board certified in Gastroenterology.
Education & Awards
Dr. Johnson graduated from Northwestern University, Chicago. He has 1 awards.
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.