Quick answers
- Which hospitals does Mary G. Youssef work at?
- Medicare's official clinician data lists Mary G. Youssef at 3 hospitals: Baylor Scott & White Medical Center Grapevine, Texas Health Presbyterian Hospital Denton and Texas Health Presbyterian Hospital Flower Mound. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mary G. Youssef see patients?
- Medicare's clinician data lists 1 practice location in Lewisville, TX. Call before your visit to confirm the address.
- What is Mary G. Youssef's specialty?
- Medicare lists Cardiovascular Disease (Cardiology) as the primary specialty.
- Does Mary G. Youssef accept Medicare assignment?
- Yes. Medicare's clinician data says Mary G. Youssef 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 Mary G. Youssef?
- (972) 434-1988, as listed in official Medicare / NPI Registry data.
- What is Mary G. Youssef's NPI number?
- 1427083203. 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 G. Youssef works
Medicare's Facility Affiliation Data lists Mary G. Youssef 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 GrapevineGrapevine, TX · Acute Care Hospital · CCN 450563
- Texas Health Presbyterian Hospital DentonDenton, TX · Acute Care Hospital · CCN 450743
- Texas Health Presbyterian Hospital Flower MoundFlower Mound, TX · Acute Care Hospital · CCN 670068
Practice locations
Addresses where Mary G. Youssef is enrolled with Medicare (CMS data updated 2026-10-02).
- 614 S Edmonds Ln, Suite 101Lewisville, TX 75067 (972) 434‑1988
Group practices
Medicare enrollment lists Mary G. Youssef as a member of this group (CMS data updated 2026-10-02).
- Texas Health Physicians Group1,365 clinicians in the group
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in Texas →
Other cardiologists in Lewisville
Clinicians with the same Medicare primary specialty in Lewisville, TX — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1991 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1427083203 |
| 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