Quick answers
- Does Sean V. Cahill accept Medicare assignment?
- Yes. Medicare's clinician data says Sean V. Cahill 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 Sean V. Cahill's NPI number?
- 1841808961. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Sean V. Cahill works
Medicare's Facility Affiliation Data lists Sean V. Cahill 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.
- Mercy Hospital JeffersonCrystal City, MO · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 260023
- Mercy Hospital SouthSaint Louis, MO · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 260077
- Mercy Hospital St LouisSaint Louis, MO · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 260020
Practice locations
Addresses where Sean V. Cahill is enrolled with Medicare (CMS data updated October 2, 2026).
- 10777 Sunset Office Dr, Suite 120Saint Louis, MO 63127 (314) 966‑0111
- 15425 Manchester Rd, Suite 28Ballwin, MO 63011 (636) 220‑6969
- 701 S New Ballas Rd, Suite 510Saint Louis, MO 63141 (314) 251‑6710
Group practices
Medicare enrollment lists Sean V. Cahill as a member of these groups (CMS data updated October 2, 2026).
- Mercy Clinic Surgical Specialists LLC182 clinicians in the group
- Physical Therapy Spine and Sports Medicine LLC129 clinicians in the group
Specialties
- Orthopedic Surgeryprimary
Other orthopedic surgeons in Saint Louis
Clinicians with the same Medicare primary specialty in Saint Louis, MO — not a recommendation.
Other clinicians in Mercy Clinic Surgical Specialists LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2020 (6 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1841808961 |
| 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