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

Individual provider Psychiatry Physician · NPI 1912192766

Peter J Klaphaak Jr., MD is a Psychiatry Physician in San Francisco, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2007
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

649 Irving St
San Francisco, CA 94122
Phone: (415) 665-6141
Fax: (415) 383-2730
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychiatry Physician (primary) Taxonomy 2084P0800X · Licence G29327 (CA)

Record details

NPI number1912192766
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedSeptember 13, 2007
Last updated in NPPESSeptember 13, 2007

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