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

Dr. Aaron Joshua Feinstein, M.D., M.H.S.

Otolaryngology Physician in Tarzana, CA · enumerated 2012 · practices at Medical Valley Partners, Inc.

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

National Provider Identifier

1043579303

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Registry record

Entity type Individual (Type 1)
Name Dr. Aaron Joshua Feinstein
Credential M.D., M.H.S.
Sex Male
Practice address Tarzana, CA, 91356
Phone (818) 609-0600
Fax (818) 609-1680
Enumeration date May 8, 2012
Last updated in NPPES Jan 26, 2019

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

Taxonomy & licenses

207Y00000X Otolaryngology Physician Allopathic & Osteopathic Physicians · License A131167 (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.

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Frequently asked questions

Where does Aaron Feinstein practice?
The practice location on file with NPPES is in Tarzana, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Aaron Feinstein?
The National Provider Identifier (NPI) for Aaron Feinstein is 1043579303, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-01-26.