Quick answers
- Which hospitals does Michael P. St. Onge work at?
- Medicare's official clinician data lists Michael P. St. Onge at 5 hospitals: Lancaster General Hospital, Penn State Health Lancaster Medical Center, WellSpan Ephrata Community Hospital, WellSpan Good Samaritan Hospital and WellSpan York Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Michael P. St. Onge see patients?
- Medicare's clinician data lists 2 practice locations, including Mount Joy, PA and Lancaster, PA. Call before your visit to confirm the address.
- What is Michael P. St. Onge's specialty?
- Medicare lists Orthopedic Surgery as the primary specialty.
- Does Michael P. St. Onge accept Medicare assignment?
- Yes. Medicare's clinician data says Michael P. St. Onge 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 Michael P. St. Onge?
- (717) 653-2200, as listed in official Medicare / NPI Registry data.
- What is Michael P. St. Onge's NPI number?
- 1184912719. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Michael P. St. Onge works
Medicare's Facility Affiliation Data lists Michael P. St. Onge at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Lancaster General HospitalLancaster, PA · Acute Care Hospital · CCN 390100
- Penn State Health Lancaster Medical CenterLancaster, PA · Acute Care Hospital · CCN 390339
- WellSpan Ephrata Community HospitalEphrata, PA · Acute Care Hospital · CCN 390225
- WellSpan Good Samaritan HospitalLebanon, PA · Acute Care Hospital · CCN 390066
- WellSpan York HospitalYork, PA · Acute Care Hospital · CCN 390046
Practice locations
Addresses where Michael P. St. Onge is enrolled with Medicare (CMS data updated 2026-10-02).
- 1009 E Main StMount Joy, PA 17552 (717) 653‑2200
- 231 Granite Run DrLancaster, PA 17601 (717) 560‑4200
Group practices
Medicare enrollment lists Michael P. St. Onge as a member of this group (CMS data updated 2026-10-02).
- Lancaster Orthopedic Group, Inc.74 clinicians in the group
Specialties
- Orthopedic Surgeryprimary
Other orthopedic surgeons in Mount Joy
Clinicians with the same Medicare primary specialty in Mount Joy, PA — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Lake Erie College Of Osteopathic Medicine, Erie |
| Graduation year | 2011 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1184912719 |
| 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