Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Ann Marie Gorczyca, D.M.D., M.P.H., M.S.

Q: What is the NPI number for Ann Gorczyca?

The National Provider Identifier (NPI) for Ann Gorczyca is 1649351255, a Type 1 (individual) record in the CMS NPPES registry.

Orthodontics and Dentofacial Orthopedics Dentistry in Antioch, CA · enumerated 2006.

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

National Provider Identifier

1649351255

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Registry record

Entity type Individual (Type 1)

Name Ann Marie Gorczyca

Credential D.M.D., M.P.H., M.S.

Sex Female

Practice address Antioch, CA, 94531

Phone (925) 757-9000

Fax (925) 757-9651

Enumeration date Oct 18, 2006

Last updated in NPPES Jul 8, 2007

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

1223X0400X Orthodontics and Dentofacial Orthopedics Dentistry Dental Providers · License 40756 (CA) Primary

1223X0400X Orthodontics and Dentofacial Orthopedics Dentistry Dental Providers Secondary

DMD · Doctor of Medicine in Dentistry: A licensed dentist; DMD and DDS are equivalent dental degrees. About the DMD credential

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

Where does Ann Gorczyca practice?

The practice location on file with NPPES is in Antioch, CA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Ann Gorczyca?

The National Provider Identifier (NPI) for Ann Gorczyca is 1649351255, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Mark Miller General Practice Dentistry · Antioch, CA NPI 1235139544 Jeffrey Haug General Practice Dentistry · Antioch, CA NPI 1154429371 The Orthodontic Office of Dr. Ann Marie Gorczyca Orthodontics and Dentofacial Orthopedics Dentistry · Antioch, CA NPI 1184705717 Roberto Deloso Oral and Maxillofacial Surgery (Dentist) · Antioch, CA NPI 1366517658 Kenneth Dupree General Practice Dentistry · Antioch, CA NPI 1134295397 Sloan Mc Donald Oral and Maxillofacial Surgery (Dentist) · Antioch, CA NPI 1679613624 Sloan M. Mcdonald, DDS and Roberto J. Deloso, DDS Oral and Maxillofacial Surgery (Dentist) · Antioch, CA NPI 1023287380 Arlyn Dubuk Periodontics · Antioch, CA NPI 1417116971

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.