Quick answers
- Which hospitals does Mary M. Hammack work at?
- Medicare's official clinician data lists Mary M. Hammack at 5 hospitals: Baylor Scott & White Medical Center Plano, Dallas Regional Medical Center, Medical City Plano, Texas Health Presbyterian Hospital Allen and Texas Health Presbyterian Hospital Plano. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mary M. Hammack see patients?
- Medicare's clinician data lists 1 practice location in Plano, TX. Call before your visit to confirm the address.
- What is Mary M. Hammack's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Mary M. Hammack accept Medicare assignment?
- Yes. Medicare's clinician data says Mary M. Hammack 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 Mary M. Hammack offer telehealth?
- Medicare's clinician data says Mary M. Hammack offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Mary M. Hammack?
- (972) 981-7500, as listed in official Medicare / NPI Registry data.
- What is Mary M. Hammack's NPI number?
- 1871501874. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Mary M. Hammack works
Medicare's Facility Affiliation Data lists Mary M. Hammack 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 PlanoPlano, TX · Acute Care Hospital · CCN 450890
- Dallas Regional Medical CenterMesquite, TX · Acute Care Hospital · CCN 450688
- Medical City PlanoPlano, TX · Acute Care Hospital · CCN 450651
- Texas Health Presbyterian Hospital AllenAllen, TX · Acute Care Hospital · CCN 450840
- Texas Health Presbyterian Hospital PlanoPlano, TX · Acute Care Hospital · CCN 450771
Practice locations
Addresses where Mary M. Hammack is enrolled with Medicare (CMS data updated 2026-10-02).
- 6124 W Parker RdPlano, TX 75093 (972) 981‑7500
Group practices
Medicare enrollment lists Mary M. Hammack as a member of this group (CMS data updated 2026-10-02).
- Internal Medicine Associates of Plano PA25 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Plano
Clinicians with the same Medicare primary specialty in Plano, TX — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Texas Medical School At San Antonio |
| Graduation year | 1988 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1871501874 |
| 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