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Clinical Psychologist

Mark J. Williams, CP

Sees patients in Dallas, TX · Texas

Summary

Mark J. Williams, CP (Clinical Psychologist) is enrolled with Medicare at 1 practice location in Dallas, TX. NPI 1811020076. Source: CMS National Downloadable File, updated 2026-10-02.

Call(214) 927‑8456 NPI Registry record Medicare profile

From official Medicare data

This page shows what Medicare's official clinician data says about Mark J. Williams, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

1Practice location
Clinical PsychologistPrimary specialty
May acceptAccepts Medicare assignment
YesOffers telehealth
25Years since medical school (graduated 2001)
MaleGender (as listed)

Quick answers

Where does Mark J. Williams see patients?
Medicare's clinician data lists 1 practice location in Dallas, TX. Call before your visit to confirm the address.
What is Mark J. Williams's specialty?
Medicare lists Clinical Psychologist as the primary specialty.
Does Mark J. Williams accept Medicare assignment?
Medicare's clinician data says Mark J. Williams may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
Does Mark J. Williams offer telehealth?
Medicare's clinician data says Mark J. Williams offers telehealth services. Ask the office which visits can be done by video or phone.
What is the phone number for Mark J. Williams?
(214) 927-8456, as listed in official Medicare / NPI Registry data.
What is Mark J. Williams's NPI number?
1811020076. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Practice locations

Addresses where Mark J. Williams is enrolled with Medicare (CMS data updated 2026-10-02).

Specialties

Find other clinicians: Clinical Psychologist, Texas →

Other clinical psychologists in Dallas

Clinicians with the same Medicare primary specialty in Dallas, TX — not a recommendation.

All clinical psychologists in Dallas →

Clinician information

CredentialCP
Graduation year2001
Gender (as listed)Male
Medicare assignmentMay accept for some services
TelehealthOffers telehealth services
NPI (National Provider Identifier)1811020076
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  2. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  3. Medicare Care Compare — official Medicare tool to look up clinicians