Quick answers
- Which hospitals does Alexander Mantas work at?
- Medicare's official clinician data lists Alexander Mantas at 2 hospitals: Billings Clinic Hospital and Medical City Dallas Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Alexander Mantas see patients?
- Medicare's clinician data lists 2 practice locations, including Dallas, TX and Billings, MT. Call before your visit to confirm the address.
- What is Alexander Mantas's specialty?
- Medicare lists Gastroenterology as the primary specialty, and also Internal Medicine.
- Does Alexander Mantas accept Medicare assignment?
- Yes. Medicare's clinician data says Alexander Mantas 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 Alexander Mantas?
- (972) 239-2400, as listed in official Medicare / NPI Registry data.
- What is Alexander Mantas's NPI number?
- 1811193485. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Alexander Mantas works
Medicare's Facility Affiliation Data lists Alexander Mantas at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Billings Clinic HospitalBillings, MT · Acute Care Hospital · CCN 270004
- Medical City Dallas HospitalDallas, TX · Acute Care Hospital · CCN 450647
Practice locations
Addresses where Alexander Mantas is enrolled with Medicare (CMS data updated 2026-10-02).
- 12200 Park Central Dr, Suite 403Dallas, TX 75251 (972) 239‑2400
- 801 N 29th StBillings, MT 59101 (406) 238‑2500
Group practices
Medicare enrollment lists Alexander Mantas as a member of these groups (CMS data updated 2026-10-02).
- Billings Clinic Specialty Supplies and Services, LLC824 clinicians in the group
- Texas Digestive Disease Consultants, PLLC608 clinicians in the group
Specialties
- Gastroenterologyprimary
- Internal Medicinealso
Other gastroenterologists in Dallas
Clinicians with the same Medicare primary specialty in Dallas, TX — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2007 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1811193485 |
| 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