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

Dr. Stephen J. Wieder, MD

Individual provider Psychiatry Physician · NPI 1679680771

Dr. Stephen J. Wieder, MD is a Psychiatry Physician in Napa, California. Licensed in California and Massachusetts. Registered with an NPI since 2006.

Licensed in
CA, MA
In the registry since
2006
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

2100 Napa Vallejo Hwy
Napa, CA 94558-6293 Not confirmed with CMS for 10 years — call before visiting
Phone: (707) 253-5000
Fax: (978) 462-3496
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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 G29990 (CA)
Psychiatry Physician Taxonomy 2084P0800X · Licence 38697 (MA)
Child & Adolescent Psychiatry Physician Taxonomy 2084P0804X · Licence 38697 (MA)

Record details

NPI number1679680771
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 24, 2006
Last updated in NPPESOctober 27, 2015

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