Quick answers
- Which hospitals does Mark D. Ellis work at?
- Medicare's official clinician data lists Mark D. Ellis at 4 hospitals: Baylor Scott & White Medical Center - Marble Falls, Baylor Scott & White Medical Center - Round Rock, Baylor Scott & White Medical Center - Temple and Hill Country Memorial Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mark D. Ellis see patients?
- Medicare's clinician data lists 2 practice locations, including Johnson City, TX and Marble Falls, TX. Call before your visit to confirm the address.
- What is Mark D. Ellis's specialty?
- Medicare lists Nurse Practitioner as the primary specialty.
- Does Mark D. Ellis accept Medicare assignment?
- Yes. Medicare's clinician data says Mark D. Ellis 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.
- Does Mark D. Ellis offer telehealth?
- Medicare's clinician data says Mark D. Ellis offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Mark D. Ellis?
- (830) 868-4033, as listed in official Medicare / NPI Registry data.
- What is Mark D. Ellis's NPI number?
- 1508868530. 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. Ellis works
Medicare's Facility Affiliation Data lists Mark D. Ellis at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Baylor Scott & White Medical Center - Marble FallsMarble Falls, TX · Acute Care Hospital · CCN 670108
- Baylor Scott & White Medical Center - Round RockRound Rock, TX · Acute Care Hospital · CCN 670034
- Baylor Scott & White Medical Center - TempleTemple, TX · Acute Care Hospital · CCN 450054
- Hill Country Memorial HospitalFredericksburg, TX · Acute Care Hospital · CCN 450604
Practice locations
Addresses where Mark D. Ellis is enrolled with Medicare (CMS data updated 2026-10-02).
- 208 Haley RdJohnson City, TX 78636 (830) 868‑4033
- 810 W Hwy 71, Marble Falls Professional Services GroupMarble Falls, TX 78654 (830) 201‑8000
Group practices
Medicare enrollment lists Mark D. Ellis as a member of this group (CMS data updated 2026-10-02).
- Scott and White Hospital - Marble Falls45 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Texas
Clinicians with the same Medicare primary specialty in Texas — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Medical school | University Of Texas Medical Branch At Galveston |
| Graduation year | 1997 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1508868530 |
| 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