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William Wallen, MD

Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician in Indianapolis, IN · enumerated 2014.

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

National Provider Identifier

1164827945

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Registry record

Entity type Individual (Type 1)
Name William Wallen
Credential MD
Sex Male
Practice address 8333 Naab Rd Ste 320, Indianapolis, IN, 46260
Phone (317) 338-3000
Fax (317) 583-3099
Enumeration date Oct 23, 2014
Last updated in NPPES Sep 9, 2025

Taxonomy & licenses

208G00000X Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician Allopathic & Osteopathic Physicians · License TP576 (KY) Primary
390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary
208G00000X Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician Allopathic & Osteopathic Physicians · License 01097512A (IN) Secondary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier Type State Issuer
TP576 Other KY KY LICENSE

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 William Wallen practice?
The practice location on file with NPPES is in Indianapolis, IN. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for William Wallen?
The National Provider Identifier (NPI) for William Wallen is 1164827945, 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 2025-09-09.