Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Brook Elizabeth Clark, PH.D.
Psychologist in Great Falls, MT · enumerated 2021.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1831766146
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Registry record
Entity type Individual (Type 1)
Name Brook Elizabeth Clark
Credential PH.D.
Sex Female
Practice address 400 15th Ave S Ste 205, Great Falls, MT, 59405
Phone (406) 731-8888
Fax (406) 731-8318
Enumeration date Jun 6, 2021
Last updated in NPPES Apr 5, 2024
Taxonomy & licenses
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
What specialty is Brook Clark?
Brook Clark 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.
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 →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-04-05.