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

Dr. John Hollister Thacher, MD

Individual provider Dermatopathology Physician · NPI 1205962032

Dr. John Hollister Thacher, MD is a Dermatology in Ojai, California. Graduated from University of Southern California Keck School of Medicine in 1969, 57 years ago. Practices as a sole proprietor and accepts Medicare assignment. Licensed in California.

Years since qualifying
57
Trained at
University of Southern California Keck School of Medicine
Licensed in
CA
In the registry since
2007
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

115 Pirie Rd Ste F
Ojai, CA 93023-3100
Phone: (805) 648-6969
Fax: (805) 648-3762
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Dermatopathology Physician (primary) Taxonomy 207ND0900X · Licence G18881 (CA)

Record details

NPI number1205962032
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedFebruary 26, 2007
Last updated in NPPESMarch 6, 2025
Certification dateMarch 6, 2025

Medicare enrollment

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

Medicare specialtyDERMATOLOGY
Medical schoolUNIVERSITY OF SOUTHERN CALIFORNIA KECK SCHOOL OF MEDICINE
Graduated 1969 (57 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount