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

Dr. Christopher John Klein, PHD

Clinical Psychologist in Tulsa, OK · enumerated 2015 · practices at Psychological Assessment Advocacy and Treatment Center for Children.

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

National Provider Identifier

1306216742

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Registry record

Entity type Individual (Type 1)

Name Dr. Christopher John Klein

Credential PHD

Sex Male

Practice address Tulsa, OK, 74136

Phone (918) 938-6926

Fax (918) 938-6971

Enumeration date Sep 28, 2015

Last updated in NPPES Mar 24, 2025

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

Taxonomy & licenses

103TS0200X School Psychologist Behavioral Health & Social Service Providers · License 1242 (OK) Secondary

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License 1242 (OK) 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
200612710A	Medicaid	OK	-

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 Christopher Klein's NPI record?

Cross-check NPI 1306216742 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1306216742 active?

Yes, as of the latest NPPES snapshot, NPI 1306216742 is active (record last updated 2025-03-24).

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Psychological Assessment Advocacy and Treatment Center for Children Clinical Psychologist · Tulsa, OK NPI 1205637295

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-03-24.