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

Dr. Marion Phoummarath Zahn, PH.D.

Q: What is the NPI number for Marion Zahn?

The National Provider Identifier (NPI) for Marion Zahn is 1669771804, a Type 1 (individual) record in the CMS NPPES registry.

Psychologist in Katy, TX · enumerated 2011.

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

National Provider Identifier

1669771804

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Registry record

Entity type Individual (Type 1)

Name Dr. Marion Phoummarath Zahn

Credential PH.D.

Sex Female

Practice address Katy, TX, 77494

Phone (713) 975-1222

Fax (888) 975-1526

Enumeration date Mar 25, 2011

Last updated in NPPES Jan 27, 2026

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

Taxonomy & licenses

103T00000X Psychologist Behavioral Health & Social Service Providers · License 7661 Secondary

103T00000X Psychologist Behavioral Health & Social Service Providers · License 34861 (TX) 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
7661	Other	-	PSYPACT APIT

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 is the NPI number for Marion Zahn?

The National Provider Identifier (NPI) for Marion Zahn is 1669771804, a Type 1 (individual) record in the CMS NPPES registry.

Where does Marion Zahn practice?

The practice location on file with NPPES is in Katy, TX. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Jefrey Garcia Chiropractor · Katy, TX NPI 1750559043 Anne Morello Marriage & Family Therapist · Katy, TX NPI 1699029827 Jheri Walters Clinical Social Worker · Katy, TX NPI 1174863955 Morello Family Therapy, P.A. Community/Behavioral Health Agency · Katy, TX NPI 1134551450 Alisa Prewitt and Associates Speech-Language Pathologist · Katy, TX NPI 1093139511 Cinco Ranch Behavioral Health Mental Health Counselor · Katy, TX NPI 1861896417 Wilcrest Counseling Services, Pllc Counseling Psychologist · Katy, TX NPI 1528456852 Michael Hack Clinical Social Worker · Katy, TX NPI 1922460377

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-01-27.