Quick answers
- Where does Andrew D. Merkin see patients?
- Medicare's clinician data lists 2 practice locations, including Mesquite, TX. Call before your visit to confirm the address.
- What is Andrew D. Merkin's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Andrew D. Merkin accept Medicare assignment?
- Yes. Medicare's clinician data says Andrew D. Merkin 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 Andrew D. Merkin?
- (972) 686-9339, as listed in official Medicare / NPI Registry data.
- What is Andrew D. Merkin's NPI number?
- 1831144534. 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 Andrew D. Merkin is enrolled with Medicare (CMS data updated 2026-10-02).
- 2692 N Galloway, Suite 403Mesquite, TX 75150
- 2692 N Galloway Ave, Suite 403Mesquite, TX 75150 (972) 686‑9339
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Mesquite
Clinicians with the same Medicare primary specialty in Mesquite, TX — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Texas Medical Branch At Galveston |
| Graduation year | 1979 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1831144534 |
| 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 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