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

Dr. Spencer William Preston Drotman, MD

Individual provider Anesthesiology Physician · NPI 1578906665

Dr. Spencer William Preston Drotman, MD is an Anesthesiology in Greenbrae, California. Graduated from Georgetown University School of Medicine in 2013, 13 years ago. Practices with Anesthesiology Consultants of Marin, a 32-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in California and Pennsylvania.

Years since qualifying
13
Trained at
Georgetown University School of Medicine
Licensed in
CA, PA
In the registry since
2013
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 →

Practice location Address checks out

250 Bon Air Rd
Greenbrae, CA 94904-1702
Phone: (415) 925-7100
Show map & directions

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

Additional practice locations (1)

  • 3401 N Broad St, Philadelphia, PA 19140-5103 — (215) 707-3326

Specialties & licences

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence A156562 (CA)
Anesthesiology Physician Taxonomy 207L00000X · Licence MD463943 (PA)

Record details

NPI number1578906665
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 9, 2013
Last updated in NPPESApril 8, 2020
Certification dateApril 8, 2020

Medicare enrollment

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

Medicare specialtyANESTHESIOLOGY
Medical schoolGEORGETOWN UNIVERSITY SCHOOL OF MEDICINE
Graduated 2013 (13 years in practice)
Group practice Anesthesiology Consultants Of Marin — 32 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Greenbrae