Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Gregory Crossman, D.C.

Chiropractor in San Rafael, CA · enumerated 2007 · practices at Crossman Chiropractic, Inc..

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

National Provider Identifier

1316133531

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Registry record

Entity type Individual (Type 1)

Name Dr. Gregory Crossman

Credential D.C.

Sex Male

Practice address 4340 Redwood Hwy Ste 106, San Rafael, CA, 94903

Phone (415) 446-7285

Fax (415) 446-0109

Enumeration date Sep 20, 2007

Last updated in NPPES Sep 29, 2021

Taxonomy & licenses

111N00000X Chiropractor Chiropractic Providers · License 19743 (CA) Primary

DC · Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders. About the DC 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 Gregory Crossman practice?

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

What is the NPI number for Gregory Crossman?

The National Provider Identifier (NPI) for Gregory Crossman is 1316133531, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Crossman Chiropractic, Inc. Chiropractor · San Rafael, CA NPI 1447920442

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-09-29.