Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Aaron Stern, M. D.

Q: What is the NPI number for Aaron Stern?

The National Provider Identifier (NPI) for Aaron Stern is 1871771618, a Type 1 (individual) record in the CMS NPPES registry.

Emergency Medicine Physician in Sacramento, CA · enumerated 2008.

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

National Provider Identifier

1871771618

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. Aaron Stern

Credential M. D.

Sex Male

Practice address 4001 J St, Sacramento, CA, 95819

Phone (916) 453-4037

Fax (916) 453-4649

Enumeration date Feb 4, 2008

Last updated in NPPES Feb 4, 2008

Taxonomy & licenses

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License A102315 (CA) 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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Aaron Stern?

The National Provider Identifier (NPI) for Aaron Stern is 1871771618, a Type 1 (individual) record in the CMS NPPES registry.

Where does Aaron Stern practice?

The practice location on file with NPPES is in Sacramento, CA. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-02-04.