Quick answers
- Which hospitals does Mark K. Ray work at?
- Medicare's official clinician data lists Mark K. Ray at 1 hospital: Parkland Health & Hospital System. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mark K. Ray see patients?
- Medicare's clinician data lists 7 practice locations, including Little Elm, TX and Dallas, TX. Call before your visit to confirm the address.
- What is Mark K. Ray's specialty?
- Medicare lists Dermatology as the primary specialty.
- Does Mark K. Ray accept Medicare assignment?
- Yes. Medicare's clinician data says Mark K. Ray accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Mark K. Ray?
- (975) 988-9945, as listed in official Medicare / NPI Registry data.
- What is Mark K. Ray's NPI number?
- 1720022874. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Mark K. Ray works
Medicare's Facility Affiliation Data lists Mark K. Ray at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Parkland Health & Hospital SystemDallas, TX · Acute Care Hospital · CCN 450015
Practice locations
Addresses where Mark K. Ray is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 7; the Medicare profile lists all.
- 2601 Little Elm Pkwy, Suite 101Little Elm, TX 75068 (975) 988‑9945
- 5184 Tex Oak AveDallas, TX 75235
- 5184 Tex Oak Ave, Fl 5Dallas, TX 75235
- 5939 Harry Hines BlvdDallas, TX 75390 (214) 645‑0624
- 6202 Harry Hines BlvdDallas, TX 75390
Group practices
Medicare enrollment lists Mark K. Ray as a member of this group (CMS data updated 2026-10-02).
- University of Texas Southwestern Medical Center at Dallas3,187 clinicians in the group
Specialties
- Dermatologyprimary
Other dermatologists in Texas
Clinicians with the same Medicare primary specialty in Texas — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Texas Medical Branch At Galveston |
| Graduation year | 1986 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1720022874 |
| Corrections | Report 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians