Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. Gregory H Johnson, MD

Individual provider Gastroenterology Physician · NPI 1952463762

Dr. Gregory H Johnson, MD is a Gastroenterology Physician in Thousand Oaks, California. Licensed in California. Registered with an NPI since 2006.

Licensed in
CA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

227 W Janss Rd #215
Thousand Oaks, CA 91360-1848
Phone: (805) 497-9597
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence G25258 (CA)

Record details

NPI number1952463762
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedDecember 15, 2006
Last updated in NPPESJuly 8, 2007
Mailing address227 W Janss Rd, 215, Thousand Oaks, CA 91360-1848

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