NPI Portal NPI Lookup & Verification

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

Dr. Cory Nelkin, D.O.

Internal Medicine Physician in Poway, CA · enumerated 2011.

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

National Provider Identifier

1831475136

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Registry record

Entity type Individual (Type 1)
Name Dr. Cory Nelkin
Credential D.O.
Sex Male
Practice address Poway, CA, 92064
Phone (858) 613-4000
Enumeration date Oct 31, 2011
Last updated in NPPES Sep 16, 2021

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

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License P8058 (TX) Secondary
207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License L0103652-0328 (TX) Secondary
207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 20A13311 (CA) 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

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 Cory Nelkin's NPI record?
Cross-check NPI 1831475136 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1831475136 active?
Yes, as of the latest NPPES snapshot, NPI 1831475136 is active (record last updated 2021-09-16).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-09-16.