Quick answers
- Which hospitals does William P. Sullivan work at?
- Medicare's official clinician data lists William P. Sullivan at 2 hospitals: OSF Saint Elizabeth MDL Center and Rochelle Community Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does William P. Sullivan see patients?
- Medicare's clinician data lists 4 practice locations, including Ottawa, IL, Streator, IL and Rochelle, IL. Call before your visit to confirm the address.
- What is William P. Sullivan's specialty?
- Medicare lists Emergency Medicine as the primary specialty.
- Does William P. Sullivan accept Medicare assignment?
- Yes. Medicare's clinician data says William P. Sullivan 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. Sullivan?
- (815) 433-3100, as listed in official Medicare / NPI Registry data.
- What is William P. Sullivan's NPI number?
- 1902911027. 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. Sullivan works
Medicare's Facility Affiliation Data lists William P. Sullivan at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- OSF Saint Elizabeth MDL CenterPeru, IL · Acute Care Hospital · CCN 140110
- Rochelle Community HospitalRochelle, IL · Critical Access Hospital · CCN 141312
Practice locations
Addresses where William P. Sullivan is enrolled with Medicare (CMS data updated 2026-10-02).
- 1100 E Norris DrOttawa, IL 61350 (815) 433‑3100
- 111 Spring StStreator, IL 61364 (815) 673‑2311
- 900 N 2nd StRochelle, IL 61068 (815) 562‑2181
- 900 N 2nd St, Suite 200Rochelle, IL 61068 (815) 562‑3784
Group practices
Medicare enrollment lists William P. Sullivan as a member of these groups (CMS data updated 2026-10-02).
- OSF Multi-Specialty Group2,114 clinicians in the group
- Rochelle Community Hospital Association26 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in Ottawa
Clinicians with the same Medicare primary specialty in Ottawa, IL — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | New York College Of Osteo Medicine Of New York Institute Of Technology |
| Graduation year | 1992 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1902911027 |
| 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