Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Robert W Gresens, DO

Anesthesiology Physician in Cottonwood, AZ · enumerated 2006.

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

National Provider Identifier

1548276249

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Registry record

Entity type Individual (Type 1)

Name Robert W Gresens

Credential DO

Sex Male

Practice address 269 S Candy Ln, Cottonwood, AZ, 86326

Phone (928) 634-2251

Enumeration date Aug 1, 2006

Last updated in NPPES Nov 7, 2007

Taxonomy & licenses

207L00000X Anesthesiology Physician Allopathic & Osteopathic Physicians · License 3689 (AZ) Primary

DO — Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier	Type	State	Issuer
596596	Medicaid	AZ	—

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

Where does Robert Gresens practice?

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

What is the NPI number for Robert Gresens?

The National Provider Identifier (NPI) for Robert Gresens is 1548276249, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-11-07.