Quick answers
- Which hospitals does Xiu Ying Au work at?
- Medicare's official clinician data lists Xiu Ying Au at 5 hospitals: Beartooth Billings Clinic, Billings Clinic Hospital, Central Montana Medical Center, Powell Valley Hospital and Sheridan Memorial Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Xiu Ying Au see patients?
- Medicare's clinician data lists 1 practice location in Billings, MT. Call before your visit to confirm the address.
- What is Xiu Ying Au's specialty?
- Medicare lists Endocrinology as the primary specialty.
- Does Xiu Ying Au accept Medicare assignment?
- Yes. Medicare's clinician data says Xiu Ying Au 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.
- Does Xiu Ying Au offer telehealth?
- Medicare's clinician data says Xiu Ying Au offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Xiu Ying Au?
- (406) 255-8472, as listed in official Medicare / NPI Registry data.
- What is Xiu Ying Au's NPI number?
- 1659923712. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Xiu Ying Au works
Medicare's Facility Affiliation Data lists Xiu Ying Au at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Beartooth Billings ClinicRed Lodge, MT · Critical Access Hospital · CCN 271326
- Billings Clinic HospitalBillings, MT · Acute Care Hospital · CCN 270004
- Central Montana Medical CenterLewistown, MT · Critical Access Hospital · CCN 271345
- Powell Valley HospitalPowell, WY · Critical Access Hospital · CCN 531310
- Sheridan Memorial HospitalSheridan, WY · Acute Care Hospital · CCN 530006
Practice locations
Addresses where Xiu Ying Au is enrolled with Medicare (CMS data updated 2026-10-02).
- 1045 N 30th StBillings, MT 59101 (406) 255‑8472
Group practices
Medicare enrollment lists Xiu Ying Au as a member of this group (CMS data updated 2026-10-02).
- Billings Clinic Specialty Supplies and Services, LLC824 clinicians in the group
Specialties
- Endocrinologyprimary
Other endocrinologists in Montana
Clinicians with the same Medicare primary specialty in Montana — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2014 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1659923712 |
| 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