Quick answers
- Which hospitals does Erin Opfer work at?
- Medicare's official clinician data lists Erin Opfer at 1 hospital: SSM Health St Mary's Hospital - St Louis. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Erin Opfer see patients?
- Medicare's clinician data lists 5 practice locations, including Saint Louis, MO, Kansas City, KS and Kansas City, MO. Call before your visit to confirm the address.
- What is Erin Opfer's specialty?
- Medicare lists Radiation Oncology as the primary specialty.
- Does Erin Opfer accept Medicare assignment?
- Yes. Medicare's clinician data says Erin Opfer 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 Erin Opfer?
- (314) 842-3535, as listed in official Medicare / NPI Registry data.
- What is Erin Opfer's NPI number?
- 1790764124. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Erin Opfer works
Medicare's Facility Affiliation Data lists Erin Opfer at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- SSM Health St Mary's Hospital - St LouisSaint Louis, MO · Acute Care Hospital · CCN 260091
Practice locations
Addresses where Erin Opfer is enrolled with Medicare (CMS data updated 2026-10-02).
- 13000 Butler Crest DrSaint Louis, MO 63128 (314) 842‑3535
- 1801 N 98th St, Children'S Mercy Village WestKansas City, KS 66111 (913) 264‑3000
- 2401 Gillham RdKansas City, MO 64108 (816) 234‑3000
- 3878 Pershall RdSaint Louis, MO 63135 (314) 344‑6021
- 5808 W 110th StOverland Park, KS 66211 (913) 696‑8000
Group practices
Medicare enrollment lists Erin Opfer as a member of these groups (CMS data updated 2026-10-02).
- The Childrens Mercy Hospital135 clinicians in the group
- SSM Cardinal Glennon Children's Hospital34 clinicians in the group
Specialties
- Radiation Oncologyprimary
Other radiation oncologists in Saint Louis
Clinicians with the same Medicare primary specialty in Saint Louis, MO — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Kansas City University Of Med & Biosciences, College Of Osteo Med |
| Graduation year | 2002 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1790764124 |
| 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