Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Subbu Nagappan, MD

Surgery Physician in Riverside, CA · enumerated 2005.

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

National Provider Identifier

1285616185

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Registry record

Entity type Individual (Type 1)

Name Subbu Nagappan

Credential MD

Sex Male

Practice address 7117 Brockton Ave, Riverside, CA, 92506

Phone (951) 782-3651

Fax (951) 784-3260

Enumeration date Nov 16, 2005

Last updated in NPPES Dec 29, 2010

Taxonomy & licenses

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License G70352 (CA) Primary

2086S0127X Trauma Surgery Physician Allopathic & Osteopathic Physicians · License G70352 (CA) Secondary

2086S0129X Vascular Surgery Physician Allopathic & Osteopathic Physicians · License G70352 (CA) Secondary

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
1730180415	Other	—	GROUP NPI
ZZZ31887Z	Other	—	GROUP SITE NUMBER

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 this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Subbu Nagappan?

Subbu Nagappan is registered in NPPES with the primary taxonomy of Surgery Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-12-29.