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

Catherine Lee Johnston, PH.D.

Psychologist in Boulder, CO · enumerated 2006.

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

National Provider Identifier

1851370886

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Registry record

Entity type Individual (Type 1)

Name Catherine Lee Johnston

Credential PH.D.

Sex Female

Practice address Boulder, CO, 80303

Phone (303) 447-8521

Fax (303) 449-1661

Enumeration date Jan 10, 2006

Last updated in NPPES Mar 30, 2013

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

Taxonomy & licenses

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License 990 (CO) Secondary

103T00000X Psychologist Behavioral Health & Social Service Providers · License 990 (CO) 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
11238541	Other	CO	CAQH ID
12063269	Other	CO	MULTIPLAN PROVIDER ID
4270760	Other	CO	AETNA PIN

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

How do I verify Catherine Johnston's NPI record?

Cross-check NPI 1851370886 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1851370886 active?

Yes, as of the latest NPPES snapshot, NPI 1851370886 is active (record last updated 2013-03-30).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-03-30.