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

Dr. Robert James Kolesnik, MD

Specialist in Upland, CA · enumerated 2006 · practices at Robert J. Kolesnik M.D., Inc..

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

National Provider Identifier

1760564256

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Registry record

Entity type Individual (Type 1)
Name Dr. Robert James Kolesnik
Credential MD
Sex Male
Practice address Upland, CA, 91786
Phone (909) 920-0298
Fax (909) 985-9227
Enumeration date Oct 20, 2006
Last updated in NPPES Apr 13, 2010

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

Taxonomy & licenses

174400000X Specialist Other Service Providers · License G44386 (CA) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier Type State Issuer
G44386 Other CA STATE MEDICAL LICENSE

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 do I verify Robert Kolesnik's NPI record?
Cross-check NPI 1760564256 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1760564256 active?
Yes, as of the latest NPPES snapshot, NPI 1760564256 is active (record last updated 2010-04-13).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-04-13.