Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
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Timothy Bauer Duncan, MD

Individual provider Emergency Medicine Physician · NPI 1013908227

Timothy Bauer Duncan, MD practises Emergency Medicine in San Francisco, California. Graduated from Geisel School of Medicine at Dartmouth in 1994, 32 years ago. Practices with San Francisco Emergency Medical Associates, a 72-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
32
Trained at
Geisel School of Medicine at Dartmouth
Licensed in
CA
In the registry since
2005
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

2333 Buchanan St
San Francisco, CA 94115-1925
Phone: (209) 342-2300
Fax: (209) 524-4240
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence G87083 (CA)

Record details

NPI number1013908227
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedNovember 4, 2005
Last updated in NPPESJuly 13, 2026

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolGEISEL SCHOOL OF MEDICINE AT DARTMOUTH
Graduated 1994 (32 years in practice)
Group practice San Francisco Emergency Medical Associates — 72 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients533
Services billed 938 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at San Francisco Emergency Medical Associates

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 72 clinicians in the practice; 12 are shown here.

Other providers in San Francisco