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Mr. Greg C Heiler, MD

Blood Banking & Transfusion Medicine Physician in Eau Claire, WI · enumerated 2006.

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

National Provider Identifier

1134173156

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Registry record

Entity type Individual (Type 1)
Name Mr. Greg C Heiler
Credential MD
Sex Male
Practice address 900 West Clairemont Avenue, Eau Claire, WI, 54701
Phone (715) 839-4121
Enumeration date May 22, 2006
Last updated in NPPES Dec 30, 2021

Taxonomy & licenses

207ZC0006X Clinical Pathology Physician Allopathic & Osteopathic Physicians · License 33269 (WI) Secondary
207ZC0500X Cytopathology Physician Allopathic & Osteopathic Physicians · License 33269 (WI) Secondary
207ZD0900X Dermatopathology (Pathology) Physician Allopathic & Osteopathic Physicians · License 33269 (WI) Secondary
207ZF0201X Forensic Pathology Physician Allopathic & Osteopathic Physicians · License 33269 (WI) Secondary
207ZH0000X Hematology (Pathology) Physician Allopathic & Osteopathic Physicians · License 33269 (WI) Secondary
207ZI0100X Immunopathology Physician Allopathic & Osteopathic Physicians · License 33269 (WI) Secondary
207ZM0300X Medical Microbiology Physician Allopathic & Osteopathic Physicians · License 33269 (WI) Secondary
207ZN0500X Neuropathology Physician Allopathic & Osteopathic Physicians · License 33269 (WI) Secondary
207ZP0102X Anatomic Pathology & Clinical Pathology Physician Allopathic & Osteopathic Physicians · License 33269 (WI) Secondary
207ZP0104X Chemical Pathology Physician Allopathic & Osteopathic Physicians · License 33269 (WI) Secondary
207ZP0105X Clinical Pathology/Laboratory Medicine Physician Allopathic & Osteopathic Physicians · License 33269 (WI) Secondary
207ZP0213X Pediatric Pathology Physician Allopathic & Osteopathic Physicians · License 33269 (WI) Secondary
207ZB0001X Blood Banking & Transfusion Medicine Physician Allopathic & Osteopathic Physicians · License 33269 (WI) Primary
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
31843200 Medicaid WI -

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 Greg Heiler?
The National Provider Identifier (NPI) for Greg Heiler is 1134173156, a Type 1 (individual) record in the CMS NPPES registry.
Where does Greg Heiler practice?
The practice location on file with NPPES is in Eau Claire, WI. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-12-30.