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DR. PETER THOMAS ANASTASSIOU M.D.
NPI 1912904806
Thoracic Surgery (Cardiothoracic Vascular Surgery) in San Francisco, CA

Active since July 07, 2005PECOS EnrolledAccepts Medicare Assignment
2100 WEBSTER ST, STE 200, SAN FRANCISCO, CA 94115(415) 600-7860(415) 600-7865 Get Directions Write a Review

NPPES record last updated: June 10, 2015. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. Peter Thomas Anastassiou M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. PETER THOMAS ANASTASSIOU M.D. (NPI 1912904806) is an individual thoracic surgery (cardiothoracic vascular surgery) provider in San Francisco, California, licensed in California (A43203) and active in the NPI registry since July 2005. He is enrolled in Medicare PECOS and is a graduate of Baylor College Of Medicine (1983).

NPPES Registry Identity

NPI1912904806
Entity TypeIndividualMale
Primary Taxonomy208G00000X
Provider Legal NameDR. PETER THOMAS ANASTASSIOUCredential: M.D.
Location Address2100 WEBSTER ST, STE 200San Francisco, CA 94115-2373
Mailing Address2100 Webster St, Suite 200San Francisco, CA 94115-2373 · (415) 600-7860 · Fax (415) 600-7865
Phone(415) 600-7860
Fax(415) 600-7865
Sole ProprietorYes
Medical School CMSBaylor College Of MedicineGraduated 1983
Enumeration DateJuly 7, 2005
Last NPPES UpdateJune 10, 2015
✔ NPI 1912904806 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyThoracic Surgery (Cardiothoracic Vascular Surgery)Allopathic & Osteopathic Physicians
Taxonomy Code208G00000X
License✔ Licensed in CA · A43203
Definition
A thoracic surgeon provides the operative, perioperative and critical care of patients with pathologic conditions within the chest. Included is the surgical care of coronary artery disease, cancers of the lung, esophagus and chest wall, abnormalities of the trachea, abnormalities of the great vessels and heart valves, congenital anomalies, tumors of the mediastinum and diseases of the diaphragm. The management of the airway and injuries of the chest is within the scope of the specialty.
Also ListedSurgeryTaxonomy 208600000X · License A43203 (CA)
2100 WEBSTER ST, San Francisco, CA 94115
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Other Identifiers 6

Medicaid00A432030CA
Other00A432030CA · Blue Shield Of California
Medicare PIN00A432030CA
Medicare UPINF34531CA
OtherP00014566CA · Railroad Medicare
Medicare PIN00A432031CA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Peter Thomas Anastassiou M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID2860484458
PECOS Enrollment IDI20040401001745
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Peter Anastassiou reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Sutter Bay Medical Foundation
15 mi
Multi-Specialty
12 CAMINO ENCINAS
Orinda, CA 94563
  • Reassigned Medicare billing, California enrollment
  • 4,479 clinicians in this Medicare group
NPI 1366898538 (510) 204-8180

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 5

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
80 services80 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
79 services59 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
35 services34 patients
Removal of lymph nodes of chest cavity using an endoscope 32674
This procedure involves using a thin, flexible tube with a light and camera, known as an endoscope, to access and remove lymph nodes in the chest cavity. It's a minimally invasive method, which can help in diagnosing or treating certain conditions.
16 services16 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
14 services13 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94115 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$202.35 typical visit price
range $69.00 – $202.35
Typical copayment $50.58 (range $17.25 – $50.58)
Most-billed visit code 99205
Established Patient
$84.91 typical visit price
range $23.44 – $166.46
Typical copayment $21.22 (range $5.86 – $41.61)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

JACK C ROSE
Psychiatry & Neurology (Neurology)
2100 WEBSTER ST, 4TH FLOOR
SAN FRANCISCO, CA 94115
San Francisco County (415) 600-5760
RUSSELL D WOO M.D.
Thoracic Surgery (Cardiothoracic Vascular Surgery)
2100 WEBSTER ST
SAN FRANCISCO, CA 94115
San Francisco County (415) 923-3004
DR. STAFFORD J DUHN DDS
Dentist (General Practice)
2100 WEBSTER ST, SUITE 325
SAN FRANCISCO, CA 94115
San Francisco County (415) 923-3034
DR. RICKI POLLYCOVE M.D., M.H.S.
Obstetrics & Gynecology (Gynecology)
2100 WEBSTER ST, STE. 508
SAN FRANCISCO, CA 94115
San Francisco County (415) 923-3390
OLGA HIDCHENKO NP
Clinical Nurse Specialist (Women's Health)
2100 WEBSTER ST, SUITE 319
SAN FRANCISCO, CA 94115
San Francisco County (415) 923-3123
DR. DAVID R MINOR MD
Internal Medicine (Medical Oncology)
2100 WEBSTER ST, #326
SAN FRANCISCO, CA 94115
San Francisco County (415) 885-8600
DR. PEDRO JOSE RUIZ M.D., PH.D.
Internal Medicine (Rheumatology)
2100 WEBSTER ST, SUITE 112
SAN FRANCISCO, CA 94115
San Francisco County (415) 923-3060
JONATHAN KAPLAN MD INC
Plastic Surgery
2100 WEBSTER ST, SUITE 429
SAN FRANCISCO, CA 94115
San Francisco County (415) 923-3005

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Peter Anastassiou's NPI number?

The NPI number for Peter Anastassiou is 1912904806. It was assigned to this individual provider in the NPPES registry on July 7, 2005.

Where is Peter Anastassiou located?

Peter Anastassiou practices at 2100 Webster St Ste 200, San Francisco, CA 94115. The listed phone number is (415) 600-7860.

What is Peter Anastassiou's specialty?

The primary specialty registered for this NPI is Thoracic Surgery (Cardiothoracic Vascular Surgery) with taxonomy code 208G00000X.

Is Peter Anastassiou enrolled in Medicare?

Yes. Peter Anastassiou is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for Peter Anastassiou's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Peter Anastassiou reassigns Medicare benefits to Sutter Bay Medical Foundation (Orinda, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Peter Anastassiou's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Peter Anastassiou was last updated on June 10, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.