Quick answers
- Which hospitals does Merrick J. Donenberg work at?
- Medicare's official clinician data lists Merrick J. Donenberg at 5 hospitals: OSF Saint Clare Medical Center, OSF Saint Elizabeth MDL Center, OSF Saint Paul Medical Center, Saint Anthony Medical Center and Saint Francis Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Merrick J. Donenberg see patients?
- Medicare's clinician data lists 7 practice locations, including Ottawa, IL, Streator, IL and Princeton, IL. Call before your visit to confirm the address.
- What is Merrick J. Donenberg's specialty?
- Medicare lists Cardiovascular Disease (Cardiology) as the primary specialty, and also Internal Medicine.
- Does Merrick J. Donenberg accept Medicare assignment?
- Yes. Medicare's clinician data says Merrick J. Donenberg 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 Merrick J. Donenberg?
- (815) 434-0276, as listed in official Medicare / NPI Registry data.
- What is Merrick J. Donenberg's NPI number?
- 1457647133. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Merrick J. Donenberg works
Medicare's Facility Affiliation Data lists Merrick J. Donenberg at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- OSF Saint Clare Medical CenterPrinceton, IL · Critical Access Hospital · CCN 141337
- OSF Saint Elizabeth MDL CenterPeru, IL · Acute Care Hospital · CCN 140110
- OSF Saint Paul Medical CenterMendota, IL · Critical Access Hospital · CCN 141310
- Saint Anthony Medical CenterRockford, IL · Acute Care Hospital · CCN 140233
- Saint Francis Medical CenterPeoria, IL · Acute Care Hospital · CCN 140067
Practice locations
Addresses where Merrick J. Donenberg is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 7; the Medicare profile lists all.
- 1050 E Norris Dr, Suite 2cOttawa, IL 61350 (815) 434‑0276
- 1100 E Norris DrOttawa, IL 61350 (815) 433‑3100
- 111 Spring StStreator, IL 61364 (815) 673‑2311
- 530 Park Ave EPrinceton, IL 61356
- 8600 State Route 91, Suite 130Peoria, IL 61615 (309) 683‑5050
Group practices
Medicare enrollment lists Merrick J. Donenberg as a member of this group (CMS data updated 2026-10-02).
- OSF Multi-Specialty Group2,114 clinicians in the group
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in Illinois →
Other cardiologists in Ottawa
Clinicians with the same Medicare primary specialty in Ottawa, IL — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Rush Medical College Of Rush University |
| Graduation year | 2011 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1457647133 |
| 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