Quick answers
- Which hospitals does William P. Long work at?
- Medicare's official clinician data lists William P. Long at 1 hospital: OSF Saint Katharine Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does William P. Long see patients?
- Medicare's clinician data lists 2 practice locations, including Dixon, IL and Peoria, IL. Call before your visit to confirm the address.
- What is William P. Long's specialty?
- Medicare lists Obstetrics/Gynecology as the primary specialty.
- Does William P. Long accept Medicare assignment?
- Yes. Medicare's clinician data says William P. Long 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 P. Long?
- (815) 288-5531, as listed in official Medicare / NPI Registry data.
- What is William P. Long's NPI number?
- 1568430460. 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 P. Long works
Medicare's Facility Affiliation Data lists William P. Long at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- OSF Saint Katharine Medical CenterDixon, IL · Acute Care Hospital · CCN 140012
Practice locations
Addresses where William P. Long is enrolled with Medicare (CMS data updated 2026-10-02).
- 403 E 1st StDixon, IL 61021 (815) 288‑5531
- 8600 State Route 91, Suite 130Peoria, IL 61615 (309) 683‑5050
Group practices
Medicare enrollment lists William P. Long as a member of this group (CMS data updated 2026-10-02).
- OSF Multi-Specialty Group2,114 clinicians in the group
Specialties
- Obstetrics/Gynecologyprimary
Other OB-GYNs in Illinois
Clinicians with the same Medicare primary specialty in Illinois — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Midwestern University, Chicago College Of Osteopathic Med |
| Graduation year | 1993 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1568430460 |
| 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