Quick answers
- Which hospitals does William M. McLaughlin work at?
- Medicare's official clinician data lists William M. McLaughlin at 4 hospitals: Barnes-Jewish St Peters Hospital, Mercy Hospital Lincoln, Progress West Hospital and St Lukes Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does William M. McLaughlin see patients?
- Medicare's clinician data lists 6 practice locations, including Troy, MO, O Fallon, MO and Saint Peters, MO. Call before your visit to confirm the address.
- What is William M. McLaughlin's specialty?
- Medicare lists Orthopedic Surgery as the primary specialty.
- Does William M. McLaughlin accept Medicare assignment?
- Yes. Medicare's clinician data says William M. McLaughlin 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 William M. McLaughlin?
- (636) 528-3407, as listed in official Medicare / NPI Registry data.
- What is William M. McLaughlin's NPI number?
- 1942865647. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where William M. McLaughlin works
Medicare's Facility Affiliation Data lists William M. McLaughlin at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Barnes-Jewish St Peters HospitalSaint Peters, MO · Acute Care Hospital · CCN 260191
- Mercy Hospital LincolnTroy, MO · Critical Access Hospital · CCN 261319
- Progress West HospitalOfallon, MO · Acute Care Hospital · CCN 260219
- St Lukes HospitalChesterfield, MO · Acute Care Hospital · CCN 260179
Practice locations
Addresses where William M. McLaughlin is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 6; the Medicare profile lists all.
- 1165 A E Cherry St, Mercy Clinic EastTroy, MO 63379 (636) 528‑3407
- 1173 E Cherry St, Mercy Clinic Vascular SpecialistsTroy, MO 63379 (636) 528‑3276
- 1175 E Cherry StTroy, MO 63379 (636) 528‑8686
- 4701 State Hwy KO Fallon, MO 63368 (636) 441‑3444
- 5200 Executive Centre Pkwy, 300 St. Peters Bone and Joint SurgerySaint Peters, MO 63376 (636) 441‑3444
Group practices
Medicare enrollment lists William M. McLaughlin as a member of these groups (CMS data updated 2026-10-02).
- Mercy Clinic Surgical Specialists LLC182 clinicians in the group
- St Peters Bone and Joint Surgery Inc26 clinicians in the group
Specialties
- Orthopedic Surgeryprimary
Other orthopedic surgeons in Missouri
Clinicians with the same Medicare primary specialty in Missouri — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2019 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1942865647 |
| 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