Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Whitney Nelson, M.D.

Hospitalist Physician in Irvine, CA · enumerated 2017.

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

National Provider Identifier

1265973523

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Whitney Nelson

Credential M.D.

Sex Female

Practice address 16200 Sand Canyon Ave, Irvine, CA, 92618

Phone (949) 873-6181

Enumeration date Mar 19, 2017

Last updated in NPPES Jul 11, 2025

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License A160145 (CA) Secondary

208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians · License A160145 (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
A160145	Other	CA	STATE 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1265973523 active?

Yes, as of the latest NPPES snapshot, NPI 1265973523 is active (record last updated 2025-07-11).

How do I verify Whitney Nelson's NPI record?

Cross-check NPI 1265973523 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

Browse all →

Scott Derkum Hospitalist Physician · Irvine, CA NPI 1588660849 Christopher Smith Physician Assistant · Irvine, CA NPI 1285622803 Joseph Gilboy Physician Assistant · Irvine, CA NPI 1851374466 Albert Jin Emergency Medical Services (Emergency Medicine) Physician · Irvine, CA NPI 1790738292 Thomas Ryu Emergency Medical Services (Emergency Medicine) Physician · Irvine, CA NPI 1164477410 Ann Ullrich Emergency Medical Services (Emergency Medicine) Physician · Irvine, CA NPI 1891741609 Steven Lin Emergency Medical Services (Emergency Medicine) Physician · Irvine, CA NPI 1821044082 G. Michael Chun Specialist · Irvine, CA NPI 1578590899

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-07-11.