Quick answers
- Which hospitals does Mark D. Johnson work at?
- Medicare's official clinician data lists Mark D. Johnson at 2 hospitals: Parkland Health & Hospital System and UT of Texas Southwestern University Hospital - William P. Clements Jr.. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mark D. Johnson see patients?
- Medicare's clinician data lists 8 practice locations, including Denton, TX and Dallas, TX. Call before your visit to confirm the address.
- What is Mark D. Johnson's specialty?
- Medicare lists Neurology as the primary specialty.
- Does Mark D. Johnson accept Medicare assignment?
- Yes. Medicare's clinician data says Mark D. Johnson 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 D. Johnson?
- (469) 303-3591, as listed in official Medicare / NPI Registry data.
- What is Mark D. Johnson's NPI number?
- 1629018502. 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 D. Johnson works
Medicare's Facility Affiliation Data lists Mark D. Johnson 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
- UT of Texas Southwestern University Hospital - William P. Clements Jr.Dallas, TX · Acute Care Hospital · CCN 450044
Practice locations
Addresses where Mark D. Johnson is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 8; the Medicare profile lists all.
Group practices
Medicare enrollment lists Mark D. Johnson 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
- Neurologyprimary
Other neurologists in Denton
Clinicians with the same Medicare primary specialty in Denton, TX — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Central Del Caribe Escuela De Medicina |
| Graduation year | 1992 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1629018502 |
| 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