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

Stefan Eric Lowenstein, MD

Individual provider Dermatology Physician · NPI 1245728807

Stefan Eric Lowenstein, MD is a Dermatology in Mill Valley, California. Graduated from University of California, San Francisco School of Medicine in 2018, 8 years ago. Practices with Union Square Dermatology a Professional Corporation, a 4-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
8
Trained at
University of California, San Francisco School of Medicine
Licensed in
CA
In the registry since
2018
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

535 Miller Ave
Mill Valley, CA 94941-2905
Phone: (415) 383-5475
Fax: (415) 383-1275
Show map & directions

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

Specialties & licences

Dermatology Physician (primary) Taxonomy 207N00000X · Licence A165056 (CA)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X
Dermatopathology (Pathology) Physician Taxonomy 207ZD0900X · Licence A165056 (CA)
MOHS-Micrographic Surgery Physician Taxonomy 207ND0101X · Licence A165056 (CA)

Record details

NPI number1245728807
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedApril 28, 2018
Last updated in NPPESApril 23, 2026
Certification dateApril 23, 2026
Mailing address535 Miller Ave, Mill Valley, CA 94941-2905

Medicare enrollment

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

Medicare specialtyDERMATOLOGY
Medical schoolUNIVERSITY OF CALIFORNIA, SAN FRANCISCO SCHOOL OF MEDICINE
Graduated 2018 (8 years in practice)
Group practice Union Square Dermatology A Professional Corporation — 4 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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