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

Dr. Jeffrey Thomas Bortz, MD

Individual provider Dermatology Physician · NPI 1710191382

Dr. Jeffrey Thomas Bortz, MD is a Dermatology in Walnut Creek, California. Graduated from University of Iowa, Rj & L Carver College of Medicine in 1989, 37 years ago. Practices with Golden State Dermatology Associates, Inc, a 119-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
37
Trained at
University of Iowa, Rj & L Carver College of Medicine
Licensed in
CA
In the registry since
2007
Specialties on file
4
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

355 Lennon Ln Ste 355
Walnut Creek, CA 94598-2418
Phone: (925) 932-7704
Show map & directions

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

Specialties & licences

MOHS-Micrographic Surgery Physician (primary) Taxonomy 207ND0101X · Licence A487440 (CA)
Dermatology Physician Taxonomy 207N00000X · Licence A487440 (CA)
Dermatopathology Physician Taxonomy 207ND0900X · Licence A487440 (CA)
Procedural Dermatology Physician Taxonomy 207NS0135X · Licence A487440 (CA)

Record details

NPI number1710191382
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 10, 2007
Last updated in NPPESJune 18, 2013

Medicare enrollment

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

Medicare specialtyDERMATOLOGY
Medical schoolUNIVERSITY OF IOWA, RJ & L CARVER COLLEGE OF MEDICINE
Graduated 1989 (37 years in practice)
Group practice Golden State Dermatology Associates, Inc. — 119 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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