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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Gregory Robert Karch, PHD HSPP

Psychologist in Richmond, IN · enumerated 2006.

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

National Provider Identifier

1548334485

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Registry record

Entity type Individual (Type 1)
Name Dr. Gregory Robert Karch
Credential PHD HSPP
Sex Male
Practice address Richmond, IN, 47374
Phone (765) 935-7284
Fax (765) 935-5002
Enumeration date Nov 20, 2006
Last updated in NPPES Mar 25, 2021

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

103TA0400X Addiction (Substance Use Disorder) Psychologist Behavioral Health & Social Service Providers · License 20090236A (IN) Secondary
103TB0200X Cognitive & Behavioral Psychologist Behavioral Health & Social Service Providers · License 20090236A (IN) Secondary
103TC1900X Counseling Psychologist Behavioral Health & Social Service Providers · License 20090236A (IN) Secondary
103TF0000X Family Psychologist Behavioral Health & Social Service Providers · License 20090236A (IN) Secondary
103TP2701X Group Psychotherapy Psychologist Behavioral Health & Social Service Providers · License 20090236A (IN) Secondary
103T00000X Psychologist Behavioral Health & Social Service Providers · License 20090236A (IN) Primary

Other identifiers

Identifier Type State Issuer
100257260A Medicaid IN -

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.

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Frequently asked questions

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.
What specialty is Gregory Karch?
Gregory Karch 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-03-25.