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

John L. Maddox, MD

Individual provider Dermatology Physician · NPI 1790837508

John L. Maddox, MD is a Dermatology Physician in Greenbrae, California. Licensed in California. Registered with an NPI since 2007.

Licensed in
CA
In the registry since
2007
Specialties on file
3
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

1300 S Eliseo Dr Ste 207
Greenbrae, CA 94904-2015
Phone: (415) 925-0550
Fax: (415) 925-9062
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Dermatology Physician (primary) Taxonomy 207N00000X · Licence G40606 (CA)
Pediatric Dermatology Physician Taxonomy 207NP0225X · Licence G40606 (CA)
Procedural Dermatology Physician Taxonomy 207NS0135X · Licence G40606 (CA)

Record details

NPI number1790837508
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJanuary 18, 2007
Last updated in NPPESJuly 1, 2015
Mailing address1300 S Eliseo Dr Ste 207, Greenbrae, CA 94904-2015

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