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
Phone: (707) 253-5000
Fax: (978) 462-3496
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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
Mailing address2100 Napa Vallejo Hwy, Napa, CA 94558-6293

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