Quick answers
- Which hospitals does Nicholas G. Baur work at?
- Medicare's official clinician data lists Nicholas G. Baur at 4 hospitals: Javon Bea Hospital, Mercy Harvard Hospital, Mercy Health System Corp and Mercyhealth Hospital & Physician Clinic-Crystal LA…. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Nicholas G. Baur see patients?
- Medicare's clinician data lists 4 practice locations, including Roscoe, IL, Rockford, IL and Crystal Lake, IL. Call before your visit to confirm the address.
- What is Nicholas G. Baur's specialty?
- Medicare lists Internal Medicine as the primary specialty, and also Gastroenterology.
- Does Nicholas G. Baur accept Medicare assignment?
- Yes. Medicare's clinician data says Nicholas G. Baur 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 Nicholas G. Baur?
- (815) 971-2000, as listed in official Medicare / NPI Registry data.
- What is Nicholas G. Baur's NPI number?
- 1144783309. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Nicholas G. Baur works
Medicare's Facility Affiliation Data lists Nicholas G. Baur at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Javon Bea HospitalRockford, IL · Acute Care Hospital · closed, according to its website · CCN 140239
- Mercy Harvard HospitalHarvard, IL · Critical Access Hospital · CCN 141335
- Mercy Health System CorpJanesville, WI · Acute Care Hospital · CCN 520066
- Mercyhealth Hospital & Physician Clinic-Crystal LA…Crystal Lake, IL · Acute Care Hospital · CCN 140308
Practice locations
Addresses where Nicholas G. Baur is enrolled with Medicare (CMS data updated 2026-10-02).
- 5000 Prairie Rose DrRoscoe, IL 61073 (815) 971‑2000
- 8201 E Riverside BlvdRockford, IL 61114 (815) 971‑2000
- 875 S Route 31Crystal Lake, IL 60014 (779) 220‑5500
- 901 Grant StHarvard, IL 60033 (815) 943‑5431
Group practices
Medicare enrollment lists Nicholas G. Baur as a member of these groups (CMS data updated 2026-10-02).
- Mercy Health System Corporation753 clinicians in the group
- Rockford Health Physicians521 clinicians in the group
Specialties
- Internal Medicineprimary
- Gastroenterologyalso
Other internal medicine doctors in Roscoe
Clinicians with the same Medicare primary specialty in Roscoe, IL — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Graduation year | 2019 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1144783309 |
| 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