Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
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Dr. Derek Joseph Gee, MD

Individual provider Anesthesiology Physician · NPI 1104926773

Dr. Derek Joseph Gee, MD practises Anesthesiology in San Francisco, California. Qualified in 2001, 25 years ago. Practices with Sacsolano Anesthesia Exchange Medical Group, Inc, a 31-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
25
Licensed in
CA
In the registry since
2006
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

601 Van Ness Ave E-410
San Francisco, CA 94102-3200 Not confirmed with CMS for 18 years — call before visiting
Phone: (415) 730-3192
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence A92328 (CA)

Record details

NPI number1104926773
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedSeptember 24, 2006
Last updated in NPPESSeptember 4, 2008

Medicare enrollment

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

Medicare specialtyANESTHESIOLOGY
Medical schoolOTHER
Graduated 2001 (25 years in practice)
Group practice Sacsolano Anesthesia Exchange Medical Group, Inc — 31 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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 patients114
Services billed 167 a service is one billed item, such as a visit, a test or a procedure
Average patient age70

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 Sacsolano Anesthesia Exchange Medical Group, Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 31 clinicians in the practice; 12 are shown here.

Other providers in San Francisco