Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Thoracic Surgery

Peter T. Anastassiou, MD

Works at hospitals in San Francisco, CA · Greenbrae, CA · Santa Rosa, CA · California

Summary

Peter T. Anastassiou, MD (Thoracic Surgery) is listed by Medicare at 4 hospitals in San Francisco, CA, Greenbrae, CA and Santa Rosa, CA. NPI 1912904806. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Peter T. Anastassiou, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

Thoracic SurgeryPrimary specialty
YesAccepts Medicare assignment
YesOffers telehealth
43Years since medical school (graduated 1983)
Baylor College Of MedicineMedical school
MaleGender (as listed)
Sutter Bay Medical FoundationGroup practice

Quick answers

Which hospitals does Peter T. Anastassiou work at?
Medicare's official clinician data lists Peter T. Anastassiou at 4 hospitals: California Pacific Medical Center- Van Ness Campus, California Pacific Medical Ctr-Davies Campus Hosp, Marinhealth Medical Center and Sutter Santa Rosa Regional Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Peter T. Anastassiou see patients?
Medicare's clinician data lists 1 practice location in San Francisco, CA. Call before your visit to confirm the address.
What is Peter T. Anastassiou's specialty?
Medicare lists Thoracic Surgery as the primary specialty.
Does Peter T. Anastassiou accept Medicare assignment?
Yes. Medicare's clinician data says Peter T. Anastassiou accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
Does Peter T. Anastassiou offer telehealth?
Medicare's clinician data says Peter T. Anastassiou offers telehealth services. Ask the office which visits can be done by video or phone.
What is the phone number for Peter T. Anastassiou?
(415) 923-6500, as listed in official Medicare / NPI Registry data.
What is Peter T. Anastassiou's NPI number?
1912904806. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Peter T. Anastassiou works

Medicare's Facility Affiliation Data lists Peter T. Anastassiou at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where Peter T. Anastassiou is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Peter T. Anastassiou as a member of this group (CMS data updated 2026-10-02).

  • Sutter Bay Medical Foundation3,829 clinicians in the group

Specialties

Find other Thoracic Surgery doctors in California →

Other thoracic surgeons in San Francisco

Clinicians with the same Medicare primary specialty in San Francisco, CA — not a recommendation.

All thoracic surgeons in San Francisco →

Clinician information

CredentialMD
Medical schoolBaylor College Of Medicine
Graduation year1983
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1912904806
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians