Quick answers
- Does Marlene C. Chang-Brown accept Medicare assignment?
- Yes. Medicare's clinician data says Marlene C. Chang-Brown accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- What is Marlene C. Chang-Brown's NPI number?
- 1659471696. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Marlene C. Chang-Brown is enrolled with Medicare (CMS data updated October 2, 2026).
- 1417 N Ware Rd, 300 Wellmed at MissionMcAllen, TX 78501 (956) 585‑4704
- 6157 NW Loop 410, 124 Wellmed at Ingram ParkSan Antonio, TX 78238 (210) 523‑1411
Group practices
Medicare enrollment lists Marlene C. Chang-Brown as a member of this group (CMS data updated October 2, 2026).
- Wellmed Medical Group PA646 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in McAllen
Clinicians with the same Medicare primary specialty in McAllen, TX — not a recommendation.
Other clinicians in Wellmed Medical Group PA
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1987 (39 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1659471696 |
| 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
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- 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