Quick answers
- Does Sierra M. Treiman accept Medicare assignment?
- Yes. Medicare's clinician data says Sierra M. Treiman 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 Sierra M. Treiman's NPI number?
- 1558941534. 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 Sierra M. Treiman is enrolled with Medicare (CMS data updated October 2, 2026).
- 515 E Thomas RdPhoenix, AZ 85012 (602) 241‑1717
- 585 N 500Provo, UT 84601 (801) 374‑1801
- 700 W 800, Suite 200Orem, UT 84057 (801) 374‑1801
Group practices
Medicare enrollment lists Sierra M. Treiman as a member of these groups (CMS data updated October 2, 2026).
- Valley Obstetrics and Gynecology, PC45 clinicians in the group
- Women's Care Arizona, LLC35 clinicians in the group
Specialties
- Obstetrics/Gynecologyprimary
Other OB-GYNs in Phoenix
Clinicians with the same Medicare primary specialty in Phoenix, AZ — not a recommendation.
Other clinicians in Valley Obstetrics and Gynecology, PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Saint Louis University School Of Medicine |
| Graduation year | 2021 (5 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1558941534 |
| 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