Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Diane Beth Trebilcock, PHD
Psychologist in East Lansing, MI · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1275631939
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Registry record
Entity type Individual (Type 1)
Name Dr. Diane Beth Trebilcock
Credential PHD
Sex Female
Practice address 2911 Eyde Parkway, Suite 100, East Lansing, MI, 48823
Phone (517) 324-1284
Enumeration date Sep 20, 2006
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
103T00000X Psychologist Behavioral Health & Social Service Providers · License 6301007023 (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
Where does Diane Trebilcock practice?
The practice location on file with NPPES is in East Lansing, MI. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Diane Trebilcock?
The National Provider Identifier (NPI) for Diane Trebilcock is 1275631939, a Type 1 (individual) record in the CMS NPPES registry.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.