Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. John Keith Ostien, PHD

Individual provider Psychologist · NPI 1063518017

Dr. John Keith Ostien, PHD is a Clinical Psychologist in East Lansing, Michigan. Qualified in 1979, 47 years ago. Practices with Comprehensive Psychological Services PC, a 9-clinician group and accepts Medicare assignment. Licensed in Michigan.

Years since qualifying
47
Licensed in
MI
In the registry since
2006
What do these letters mean?
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

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Practice location Address checks out

2720 E Lansing Dr
East Lansing, MI 48823
Phone: (517) 337-2900
Fax: (517) 351-1279
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychologist (primary) Taxonomy 103T00000X · Licence 6301001531 (MI)

Record details

NPI number1063518017
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorNo
NPI enumeratedSeptember 16, 2006
Last updated in NPPESAugust 2, 2023
Certification dateAugust 2, 2023
Mailing address2720 East Lansing Drive, East Lansing, MI 48823

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyCLINICAL PSYCHOLOGIST
Medical schoolOTHER
Graduated 1979 (47 years in practice)
Group practice Comprehensive Psychological Services Pc — 9 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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