Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Stephen M Nagy II MD Inc

Allergy Physician in Sacramento, CA · enumerated 2007 · authorized official Stephen Nagy, President.

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

National Provider Identifier

1225177983

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Registry record

Entity type Organization (Type 2)

Legal business name Stephen M Nagy II MD Inc

Practice address 4801 J Street, Ste A, Sacramento, CA, 95819

Phone (916) 456-4782

Fax (916) 456-8277

Enumeration date Feb 6, 2007

Last updated in NPPES Apr 16, 2008

Taxonomy & classification

207KA0200X Allergy Physician Allopathic & Osteopathic Physicians · License G014269 (CA) Primary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License G014269 (CA) Secondary

Authorized official

Name Stephen Nagy

Title President

Phone (916) 456-4782

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 current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2008-04-16. Verify at npiregistry.cms.hhs.gov.

Where is Stephen M Nagy II MD Inc located?

The practice location on file with NPPES is in Sacramento, CA.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-04-16.