Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Grant Matthew Heller, PH.D.
Psychologist in Saint Joseph, MI · enumerated 2012.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1356691158
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Registry record
Entity type Individual (Type 1)
Name Dr. Grant Matthew Heller
Credential PH.D.
Sex Male
Practice address 3888 Niles Rd, Saint Joseph, MI, 49085
Phone (269) 428-0222
Fax (269) 428-7456
Enumeration date Sep 19, 2012
Last updated in NPPES Jul 6, 2021
Taxonomy & licenses
103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License 6301015232 (MI) Secondary
103T00000X Psychologist Behavioral Health & Social Service Providers · License 6301015232 (MI) Primary
PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers.
About the PHD 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.
Frequently asked questions
What specialty is Grant Heller?
Grant Heller is registered in NPPES with the primary taxonomy of Psychologist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-07-06.