Quick answers
- Which hospitals does Megan Ratterman work at?
- Medicare's official clinician data lists Megan Ratterman at 4 hospitals: Billings Clinic Hospital, Intermountain Health St Vincent Regional Hospital, Johnson County Healthcare Center and Sheridan Memorial Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Megan Ratterman see patients?
- Medicare's clinician data lists 1 practice location in Sheridan, WY. Call before your visit to confirm the address.
- What is Megan Ratterman's specialty?
- Medicare lists Hematology/Oncology as the primary specialty.
- Does Megan Ratterman accept Medicare assignment?
- Yes. Medicare's clinician data says Megan Ratterman 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 Megan Ratterman?
- (307) 672-1000, as listed in official Medicare / NPI Registry data.
- What is Megan Ratterman's NPI number?
- 1407145683. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Megan Ratterman works
Medicare's Facility Affiliation Data lists Megan Ratterman 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
- Intermountain Health St Vincent Regional HospitalBillings, MT · Acute Care Hospital · CCN 270049
- Johnson County Healthcare CenterBuffalo, WY · Critical Access Hospital · CCN 531308
- Sheridan Memorial HospitalSheridan, WY · Acute Care Hospital · CCN 530006
Practice locations
Addresses where Megan Ratterman is enrolled with Medicare (CMS data updated 2026-10-02).
- 1401 W 5th StSheridan, WY 82801 (307) 672‑1000
Group practices
Medicare enrollment lists Megan Ratterman as a member of this group (CMS data updated 2026-10-02).
- Memorial Hospital of Sheridan County91 clinicians in the group
Specialties
- Hematology/Oncologyprimary
Other hematologist-oncologists in Wyoming
Clinicians with the same Medicare primary specialty in Wyoming — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Graduation year | 2011 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1407145683 |
| 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