Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
John H Trask, PH.D.
Clinical Psychologist in Troy, MI · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1417924200
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Registry record
Entity type Individual (Type 1)
Name John H Trask
Credential PH.D.
Sex Male
Practice address 650 E Big Beaver Rd, Suite A, Troy, MI, 48083
Phone (248) 689-4600
Fax (248) 519-1201
Enumeration date Mar 1, 2006
Last updated in NPPES Jan 13, 2021
Taxonomy & licenses
103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License 6301007751 (MI) Primary
PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers.
About the PHD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 1164693362 | Other | - | NPPES |
| 68-0-F3-2859-0 | Other | MI | BLUE CROSS BLUE SHIELD MI |
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 John Trask?
John Trask is registered in NPPES with the primary taxonomy of Clinical 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 → Kelly Giera Dentist · Troy, MI NPI 1134278302 Connie Wood Clinical Psychologist · Troy, MI NPI 1952502247 John H. Trask, Ph.D. Pllc Community/Behavioral Health Agency · Troy, MI NPI 1164693362 David S. Huang Ma PC Community/Behavioral Health Agency · Troy, MI NPI 1851623078 Asian Mental Health Community/Behavioral Health Agency · Troy, MI NPI 1861753840 Kelly M. Giera, D.D.S., P.C. Dentist · Troy, MI NPI 1912241795 Heather Lafollette, Ms, Ma, Lpc, LLC Professional Counselor · Troy, MI NPI 1508420811 Associates in Primary Care, Plc Internal Medicine Physician · Troy, MI NPI 1356127062
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-01-13.