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

Timothy Daniel Stark, MD

Individual provider Anesthesiology Physician · NPI 1215145032

Timothy Daniel Stark, MD practises Anesthesiology in Greenbrae, California. Graduated from Washington University School of Medicine in 2003, 23 years ago. Practices with Anesthesiology Consultants of Marin, a 32-clinician group and accepts Medicare assignment. Licensed in California and Florida.

Years since qualifying
23
Trained at
Washington University School of Medicine
Licensed in
CA, FL
In the registry since
2007
Specialties on file
2
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

250 Bon Air Rd
Greenbrae, CA 94904
Phone: (415) 925-7100
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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 A97662 (CA)
Anesthesiology Physician Taxonomy 207L00000X · Licence ME 99196 (FL)

Record details

NPI number1215145032
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 18, 2007
Last updated in NPPESMay 30, 2018

Medicare enrollment

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

Medicare specialtyANESTHESIOLOGY
Medical schoolWASHINGTON UNIVERSITY SCHOOL OF MEDICINE
Graduated 2003 (23 years in practice)
Group practice Anesthesiology Consultants Of Marin — 32 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 patients193
Services billed 215 a service is one billed item, such as a visit, a test or a procedure
Average patient age76

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.

  • Marinhealth Medical Center Hospital · Greenbrae, CA
  • Sonoma Valley Hospital Hospital · Sonoma, CA

Colleagues at Anesthesiology Consultants of Marin

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 32 clinicians in the practice; 12 are shown here.

Other providers in Greenbrae