NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

John W. Mccaskill, Ph.D., Pllc

Clinical Psychologist in Plymouth, MI · enumerated 2010 · authorized official John Mccaskill, Licensed Clinical Psychologist.

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

National Provider Identifier

1356660583

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name John W. Mccaskill, Ph.D., Pllc
Practice address 409 Plymouth Rd Ste 250, Plymouth, MI, 48170
Phone (734) 416-9098
Fax (734) 416-0158
Enumeration date May 27, 2010
Last updated in NPPES May 29, 2010

Taxonomy & classification

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License 6301012562 (MI) Primary

Authorized official

Name John Mccaskill
Title Licensed Clinical Psychologist
Phone (734) 416-9098

Other identifiers

Identifier Type State Issuer
1801825542 Other MI NPPES
6301012562 Other MI BOARD OF PSYCHOLOGY

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.

Read the full guide → Validate an NPI →

Frequently asked questions

What type of organization is John W. Mccaskill, Ph.D., Pllc?
John W. Mccaskill, Ph.D., Pllc is registered in NPPES as a Clinical Psychologist (its primary provider taxonomy).
What is a Type 2 NPI?
A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-05-29.