Quick answers
- Which hospitals does Marlene Diaz work at?
- Medicare's official clinician data lists Marlene Diaz at 2 hospitals: Medical Center of McKinney and Medical City Plano. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Marlene Diaz see patients?
- Medicare's clinician data lists 1 practice location in Plano, TX. Call before your visit to confirm the address.
- What is Marlene Diaz's specialty?
- Medicare lists Obstetrics/Gynecology as the primary specialty.
- Does Marlene Diaz accept Medicare assignment?
- Medicare's clinician data says Marlene Diaz may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- Does Marlene Diaz offer telehealth?
- Medicare's clinician data says Marlene Diaz offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Marlene Diaz?
- (972) 535-8000, as listed in official Medicare / NPI Registry data.
- What is Marlene Diaz's NPI number?
- 1427166644. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Marlene Diaz works
Medicare's Facility Affiliation Data lists Marlene Diaz at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Medical Center of McKinneyMcKinney, TX · Acute Care Hospital · CCN 450403
- Medical City PlanoPlano, TX · Acute Care Hospital · CCN 450651
Practice locations
Addresses where Marlene Diaz is enrolled with Medicare (CMS data updated 2026-10-02).
- 3060 Communications Pkwy, Suite 105Plano, TX 75093 (972) 535‑8000
Specialties
- Obstetrics/Gynecologyprimary
Other OB-GYNs in Plano
Clinicians with the same Medicare primary specialty in Plano, TX — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Texas Southwestern Medical School At Dallas |
| Graduation year | 1995 |
| Gender (as listed) | Female |
| Medicare assignment | May accept for some services |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1427166644 |
| 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