Quick answers
- Which hospitals does Marilyn Landrum work at?
- Medicare's official clinician data lists Marilyn Landrum at 2 hospitals: Alliancehealth Durant and Texoma Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Marilyn Landrum see patients?
- Medicare's clinician data lists 3 practice locations, including Denison, TX and McKinney, TX. Call before your visit to confirm the address.
- What is Marilyn Landrum's specialty?
- Medicare lists Internal Medicine as the primary specialty, and also Pediatric Medicine.
- Does Marilyn Landrum accept Medicare assignment?
- Yes. Medicare's clinician data says Marilyn Landrum 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 Marilyn Landrum offer telehealth?
- Medicare's clinician data says Marilyn Landrum offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Marilyn Landrum?
- (903) 416-6015, as listed in official Medicare / NPI Registry data.
- What is Marilyn Landrum's NPI number?
- 1285683987. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Marilyn Landrum works
Medicare's Facility Affiliation Data lists Marilyn Landrum at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Alliancehealth DurantDurant, OK · Acute Care Hospital · CCN 370014
- Texoma Medical CenterDenison, TX · Acute Care Hospital · CCN 450324
Practice locations
Addresses where Marilyn Landrum is enrolled with Medicare (CMS data updated 2026-10-02).
- 5012 S US Hwy 75Denison, TX 75020
- 5012 S US Hwy 75, Suite 300Denison, TX 75020 (903) 416‑6015
- 5701 Virginia PkwyMcKinney, TX 75071 (214) 592‑0212
Group practices
Medicare enrollment lists Marilyn Landrum as a member of these groups (CMS data updated 2026-10-02).
- Legacy Healthcare Services Inc3,223 clinicians in the group
- Texomacare47 clinicians in the group
Specialties
- Internal Medicineprimary
- Pediatric Medicinealso
Other internal medicine doctors in Denison
Clinicians with the same Medicare primary specialty in Denison, TX — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Sanford School Of Medicine Of University Of South Dakota |
| Graduation year | 1994 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1285683987 |
| 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