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

Steven A. Johnson, MD

Individual provider Internal Medicine Physician · NPI 1861571531

Steven A. Johnson, MD is an Internal Medicine Physician in Martinez, 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.

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Practice location Address checks out

200 Muir Rd
Martinez, CA 94553-4614
Phone: (925) 372-1000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence A79443 (CA)

Record details

NPI number1861571531
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedNovember 3, 2006
Last updated in NPPESDecember 20, 2021
Mailing address1800 Harrison St Fl 7, Oakland, CA 94612-3466

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