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

Stephen T. Penepacker, MD

Individual provider Psychiatry Physician · NPI 1336165125

Stephen T. Penepacker, MD is a Psychiatry in San Luis Obispo, California. Graduated from University of Illinois College of Med (CHI/PEOR/ROCK/Chm-Urb) in 1999, 27 years ago. Practices with County of San Luis Obispo, an 11-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
27
Trained at
University of Illinois College of Med (CHI/PEOR/ROCK/Chm-Urb)
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

2178 Johnson Ave
San Luis Obispo, CA 93401-4535
Phone: (805) 781-4700
Fax: (805) 781-1232
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 1350 E Grand Ave, Arroyo Grande, CA 93420-2422 — (805) 474-2154

Specialties & licences

Psychiatry Physician (primary) Taxonomy 2084P0800X · Licence C180768 (CA)

Record details

NPI number1336165125
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 14, 2006
Last updated in NPPESDecember 9, 2025
Certification dateDecember 9, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyPSYCHIATRY
Medical schoolUNIVERSITY OF ILLINOIS COLLEGE OF MED (CHI/PEOR/ROCK/CHM-URB)
Graduated 1999 (27 years in practice)
Group practice County Of San Luis Obispo — 11 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Other providers in San Luis Obispo