MARK J WILLIAMS PH.D., PLLC
NPI 1639245962
Psychologist - Clinical in Dallas, TX

Q: What is Mark J Williams Ph.D., PLLC's NPI number?

The NPI number for Mark J Williams Ph.D., PLLC is 1639245962. It was assigned to this organization in the NPPES registry on November 28, 2006.

Q: What is Mark J Williams Ph.D., PLLC's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.

Active since November 28, 2006

5924 ROYAL LN, SUITE 211, DALLAS, TX 75230(214) 927-8456(214) 361-2335 Get Directions Write a Review

NPPES record last updated: August 22, 2020. Verified against the NPPES registry weekly; last sync: August 16, 2026.

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About Mark J Williams Ph.d., Pllc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MARK J WILLIAMS PH.D., PLLC (NPI 1639245962) is a healthcare organization registered as a clinical in Dallas, Texas and active in the NPI registry since November 2006. The organization lists Mark Jeffrey Williams, Managing Member, as its authorized official.

NPPES Registry Identity

NPI1639245962

Entity TypeOrganization

Primary Taxonomy103TC0700X

Legal Business NameMARK J WILLIAMS PH.D., PLLC

Location Address5924 ROYAL LN, SUITE 211Dallas, TX 75230-3863

Mailing Address833 Kirkwood DrDallas, TX 75218-2283 · (214) 927-8456 · Fax (214) 361-2335

Phone(214) 927-8456

Fax(214) 361-2335

Organization SubpartNo

Authorized OfficialMark Jeffrey WilliamsManaging Member · (214) 927-8456

Enumeration DateNovember 28, 2006

Last NPPES UpdateAugust 22, 2020

✔ NPI 1639245962 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychologist · ClinicalBehavioral Health & Social Service Providers

Taxonomy Code103TC0700X

License✔ Licensed in TX · 32192

Definition

A psychologist who provides continuing and comprehensive mental and behavioral health care for individuals and families; consultation to agencies and communities; training, education and supervision; and research-based practice. It is a specialty in breadth -- one that is broadly inclusive of severe psychopathology -- and marked by comprehensiveness and integration of knowledge and skill from a broad array of disciplines within and outside of psychology proper. The scope of clinical psychology encompasses all ages, multiple diversities and varied systems.

5924 ROYAL LN, Dallas, TX 75230

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Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Other Providers at the Same Location NPPES 9

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ELIZABETH GRAY HUBER PHD

Counselor (Mental Health)

5924 ROYAL LN
DALLAS, TX 75230

Dallas County (469) 269-0519

FRANK D. OHLER, PH.D. P.C.

Psychologist (Clinical)

5924 ROYAL LN, SUITE 202-B
DALLAS, TX 75230

Dallas County (214) 692-0010

DR. HERBERT GOMBERG M.D.

Psychiatry & Neurology (Psychiatry)

5924 ROYAL LN, SUITE 260
DALLAS, TX 75230

Dallas County (214) 691-8606

SUSAN VICHICK-JOHNSON LCSW

Social Worker (Clinical)

5924 ROYAL LN, SUITE 216
DALLAS, TX 75230

Dallas County (214) 987-0825

SHARON LEVINE ROSS MSSW,LCSW

Social Worker (Clinical)

5924 ROYAL LN, SUITE 103
DALLAS, TX 75230

Dallas County (214) 364-9999

DR. JOY LIANI HALLMAN

Psychologist

5924 ROYAL LN
DALLAS, TX 75230

Dallas County (972) 885-8193

MYPATHCOUNSELING, PLLC

Counselor (Professional)

5924 ROYAL LN, SUITE 265
DALLAS, TX 75230

Dallas County (214) 945-2599

DR. LAURA LEA SEARS M. D.

Dermatology (Procedural Dermatology)

5924 ROYAL LN, SUITE 104
DALLAS, TX 75230

Dallas County (214) 987-3376

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Mark J Williams Ph.D., PLLC's NPI number?

The NPI number for Mark J Williams Ph.D., PLLC is 1639245962. It was assigned to this organization in the NPPES registry on November 28, 2006.

Where is Mark J Williams Ph.D., PLLC located?

Mark J Williams Ph.D., PLLC is located at 5924 Royal Ln Suite 211, Dallas, TX 75230. The listed phone number is (214) 927-8456.

What is Mark J Williams Ph.D., PLLC's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.

When was this NPI record last updated?

The NPPES record for Mark J Williams Ph.D., PLLC was last updated on August 22, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.