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

Dr. Aaron V Mares, M.D.

Q: What is the NPI number for Aaron Mares?

The National Provider Identifier (NPI) for Aaron Mares is 1073705513, a Type 1 (individual) record in the CMS NPPES registry.

Internal Medicine Physician in Pittsburgh, PA · enumerated 2007.

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

National Provider Identifier

1073705513

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Registry record

Entity type Individual (Type 1)

Name Dr. Aaron V Mares

Credential M.D.

Sex Male

Practice address Pittsburgh, PA, 15203

Phone (412) 432-3607

Fax (412) 432-3690

Enumeration date Aug 17, 2007

Last updated in NPPES Mar 26, 2013

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 MT191136 (PA) Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License MD439119 (PA) 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

Where does Aaron Mares practice?

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

What is the NPI number for Aaron Mares?

The National Provider Identifier (NPI) for Aaron Mares is 1073705513, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-03-26.