Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Advanced Multi Specialty Medical Group

General Practice Physician in Fairfield, CA · enumerated 2007 · authorized official Thomas Vamvouris, Partner.

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

National Provider Identifier

1205981412

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)

Legal business name Advanced Multi Specialty Medical Group

Other name <Unavail>

Practice address 1690 W. Texas St, Ste 1w, Fairfield, CA, 94533

Phone (707) 427-2600

Fax (707) 427-2662

Enumeration date Jan 25, 2007

Last updated in NPPES Jun 27, 2008

Taxonomy & classification

111N00000X Chiropractor Chiropractic Providers Secondary

171100000X Acupuncturist Other Service Providers Secondary

208D00000X General Practice Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Thomas Vamvouris

Title Partner

Phone (510) 276-4845

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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

What type of organization is Advanced Multi Specialty Medical Group?

Advanced Multi Specialty Medical Group is registered in NPPES as a General Practice Physician (its primary provider taxonomy).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-06-27.