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

Individual provider Anesthesiology Physician · NPI 1831134873

Mark Fujii, MD practises Anesthesiology in San Ramon, California. Graduated from Hahnemann University College of Medicine in 1991, 35 years ago. Practices with Premier Anesthesia of California PC, a 42-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
35
Trained at
Hahnemann University College of Medicine
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

2420 Camino Ramon Ste 270
San Ramon, CA 94583-4319 Not confirmed with CMS for 16 years — call before visiting
Phone: (925) 543-0140
Fax: (925) 543-0145
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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 G76538 (CA)

Record details

NPI number1831134873
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 16, 2006
Last updated in NPPESJuly 27, 2010

Medicare enrollment

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

Medicare specialtyANESTHESIOLOGY
Medical schoolHAHNEMANN UNIVERSITY COLLEGE OF MEDICINE
Graduated 1991 (35 years in practice)
Group practice Premier Anesthesia Of California Pc — 42 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 patients239
Services billed 313 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

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 Premier Anesthesia of California PC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 42 clinicians in the practice; 12 are shown here.

Other providers in San Ramon