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

Christopher Paul Kellner, M.D.

Neurological Surgery Physician in New York, NY · enumerated 2008 · practices at Mount Sinai Medical Center.

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

National Provider Identifier

1457504490

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Registry record

Entity type Individual (Type 1)

Name Christopher Paul Kellner

Credential M.D.

Sex Male

Practice address New York, NY, 10029

Phone (212) 241-2606

Enumeration date Nov 3, 2008

Last updated in NPPES Oct 11, 2022

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

Taxonomy & licenses

2085N0700X Neuroradiology Physician Allopathic & Osteopathic Physicians · License 281906 (NY) Secondary

207T00000X Neurological Surgery Physician Allopathic & Osteopathic Physicians · License 281906 (NY) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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

How do I verify Christopher Kellner's NPI record?

Cross-check NPI 1457504490 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1457504490 active?

Yes, as of the latest NPPES snapshot, NPI 1457504490 is active (record last updated 2022-10-11).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-10-11.