Quick answers
- Does Alexander J. Treat accept Medicare assignment?
- Yes. Medicare's clinician data says Alexander J. Treat 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 Alexander J. Treat's NPI number?
- 1760897227. 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 J. Treat works
Medicare's Facility Affiliation Data lists Alexander J. Treat at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- SSM Health St Mary's Hospital - St LouisSaint Louis, MO · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 260091
Practice locations
Addresses where Alexander J. Treat is enrolled with Medicare (CMS data updated October 2, 2026).
- 10101 Woodfield LnSaint Louis, MO 63132 (608) 280‑4647
- 1201 S Grand BlvdSaint Louis, MO 63104 (314) 257‑8000
- 1225 S Grand BlvdSaint Louis, MO 63104 (314) 257‑8000
Group practices
Medicare enrollment lists Alexander J. Treat as a member of these groups (CMS data updated October 2, 2026).
- SSM Health Care Group940 clinicians in the group
- SSM Health Slu Hospital Anesthesia Physician Billing LLC102 clinicians in the group
Specialties
- Anesthesiology Assistantprimary
Other anesthesiologist assistants in Saint Louis
Clinicians with the same Medicare primary specialty in Saint Louis, MO — not a recommendation.
Other clinicians in SSM Health Care Group
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | AA |
|---|---|
| Graduation year | 2014 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1760897227 |
| 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 October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- 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