Quick answers
- Which hospitals does Mary Ellen Chang work at?
- Medicare's official clinician data lists Mary Ellen Chang at 2 hospitals: Baylor Scott & White Medical Center at Irving and Baylor University Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mary Ellen Chang see patients?
- Medicare's clinician data lists 3 practice locations, including Forney, TX, Dallas, TX and Tulsa, OK. Call before your visit to confirm the address.
- What is Mary Ellen Chang's specialty?
- Medicare lists Emergency Medicine as the primary specialty.
- Does Mary Ellen Chang accept Medicare assignment?
- Yes. Medicare's clinician data says Mary Ellen Chang 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 Ellen Chang?
- (844) 288-0359, as listed in official Medicare / NPI Registry data.
- What is Mary Ellen Chang's NPI number?
- 1649891987. 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 Ellen Chang works
Medicare's Facility Affiliation Data lists Mary Ellen Chang 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 at IrvingIrving, TX · Acute Care Hospital · CCN 450079
- Baylor University Medical CenterDallas, TX · Acute Care Hospital · CCN 450021
Practice locations
Addresses where Mary Ellen Chang is enrolled with Medicare (CMS data updated 2026-10-02).
- 1327 S FM, Suite 741Forney, TX 75126 (844) 288‑0359
- 3500 Gaston AveDallas, TX 75246 (214) 820‑0111
- 6161 S Yale AveTulsa, OK 74136 (918) 494‑2200
Group practices
Medicare enrollment lists Mary Ellen Chang as a member of these groups (CMS data updated 2026-10-02).
- Century Integrated Partners, Inc340 clinicians in the group
- Ies ER Oklahoma LLC143 clinicians in the group
- El Dorado Urgent Care, PLLC30 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in Forney
Clinicians with the same Medicare primary specialty in Forney, TX — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Graduation year | 2020 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1649891987 |
| 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