Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Associates in Cardio-Thoracic Surgery,A Medical Group Inc.

Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician in San Francisco, CA · enumerated 2007 · authorized official Anne-Marie Regal, President.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1881740827

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Registry record

Entity type Organization (Type 2)

Legal business name Associates in Cardio-Thoracic Surgery,A Medical Group Inc.

Practice address 1 Shrader St, Suite 600, San Francisco, CA, 94117

Phone (415) 831-8800

Fax (415) 884-4468

Enumeration date Jan 25, 2007

Last updated in NPPES Aug 22, 2020

Taxonomy & classification

208G00000X Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician Allopathic & Osteopathic Physicians · License G22244 (CA) Primary

Authorized official

Name Anne-Marie Regal

Title President

Phone (415) 831-8800

Other identifiers

Identifier	Type	State	Issuer
00G222440	Medicaid	CA	-

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2020-08-22. Verify at npiregistry.cms.hhs.gov.

Where is Associates in Cardio-Thoracic Surgery,A Medical Group Inc. located?

The practice location on file with NPPES is in San Francisco, CA.

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-08-22.