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

Mr. Aaron Madison Rosen, M.D.

Obstetrics & Gynecology Physician in Manhattan Beach, CA · enumerated 2015.

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

National Provider Identifier

1285015313

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Registry record

Entity type Individual (Type 1)

Name Mr. Aaron Madison Rosen

Credential M.D.

Sex Male

Practice address Manhattan Beach, CA, 90266

Phone (310) 726-9072

Fax (310) 726-9072

Enumeration date Jun 15, 2015

Last updated in NPPES Jul 23, 2020

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

Taxonomy & licenses

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care · License 125.066546 (IL) Secondary

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License A160663 (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

Is NPI 1285015313 active?

Yes, as of the latest NPPES snapshot, NPI 1285015313 is active (record last updated 2020-07-23).

How do I verify Aaron Rosen's NPI record?

Cross-check NPI 1285015313 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-07-23.