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

Dr. John Y.m. Koo, MD

Individual provider Dermatology Physician · NPI 1245289594

Dr. John Y.m. Koo, MD is a Dermatology in San Francisco, California. Graduated from Harvard Medical School in 1981, 45 years ago. Practices with University of California San Francisco, a 1,793-clinician group, accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
45
Trained at
Harvard Medical School
Licensed in
CA
In the registry since
2006
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

515 Spruce St
San Francisco, CA 94118-2616
Phone: (415) 476-4701
Fax: (415) 502-4126
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Specialties & licences

Psychiatry Physician (primary) Taxonomy 2084P0800X · Licence G48584 (CA)
Dermatology Physician Taxonomy 207N00000X · Licence G48584 (CA)

Record details

NPI number1245289594
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 6, 2006
Last updated in NPPESJuly 13, 2026

Medicare enrollment

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

Medicare specialtyDERMATOLOGY
Also practisesPSYCHIATRY
Medical schoolHARVARD MEDICAL SCHOOL
Graduated 1981 (45 years in practice)
Group practice University Of California San Francisco — 1793 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Other providers in San Francisco