Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Marian R Zimmerman, PH.D.

Clinical Psychologist in Frisco, TX · enumerated 2013.

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

National Provider Identifier

1811330020

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Registry record

Entity type Individual (Type 1)

Name Dr. Marian R Zimmerman

Credential PH.D.

Sex Female

Practice address 3550 Parkwood Blvd, Suite 306, Frisco, TX, 75034

Phone (214) 618-1451

Enumeration date Apr 8, 2013

Last updated in NPPES May 30, 2013

Taxonomy & licenses

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License 16829 (TX) Primary

103TH0004X Health Psychologist Behavioral Health & Social Service Providers · License 16829 (TX) Secondary

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.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is Marian Zimmerman?

Marian Zimmerman is registered in NPPES with the primary taxonomy of Clinical 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.

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Kathryn Wood Gynecology Physician · Frisco, TX NPI 1487640744 David Tharp Child & Adolescent Psychiatry Physician · Frisco, TX NPI 1457337206 Adrian Cunningham Professional Counselor · Frisco, TX NPI 1891772448 Jerry Bolin Family Medicine Physician · Frisco, TX NPI 1174563043 Alyssa Nunez Physical Therapist · Frisco, TX NPI 1649213661 Sara Bender Periodontics · Frisco, TX NPI 1225042997 Donald Mcguire Professional Counselor · Frisco, TX NPI 1649286154 Craig Neleson Interventional Pain Medicine Physician · Frisco, TX NPI 1154332138

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-05-30.