Quick answers
- Does Raul V. Guerrero accept Medicare assignment?
- Yes. Medicare's clinician data says Raul V. Guerrero accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Raul V. Guerrero see?
- In 2024, CMS data shows 321 Original Medicare patients and 1,662 services for Raul V. Guerrero. This counts Original Medicare only and measures volume, not quality.
- What is Raul V. Guerrero's NPI number?
- 1053307660. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Raul V. Guerrero, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 321 |
|---|---|
| Services billed to Medicare | 1,662 |
| Different services or procedures | 8 |
| Participating Medicare provider | Yes |
| Average age of these patients | 77 |
Most frequent services
- Anticoagulant management of patient taking warfarin (93793)916 services
- Blood test, clotting time (85610)496 services
- Insertion of needle into vein for collection of blood sample (36415)196 services
- Routine electrocardiogram (ecg) using at least 12 leads with tracing (93005)31 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Atrial fibrillation45%
- Arthritis43%
- Chronic kidney disease36%
- Diabetes35%
Hospitals where Raul V. Guerrero works
Medicare's Facility Affiliation Data lists Raul V. Guerrero at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- OSF Saint Elizabeth MDL CenterPeru, IL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 140110
- OSF Saint Katharine Medical CenterDixon, IL · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 140012
- OSF Saint Paul Medical CenterMendota, IL · Critical Access Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 141310
- Saint Anthony Medical CenterRockford, IL · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 140233
- Saint Francis Medical CenterPeoria, IL · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 140067
Practice locations
Addresses where Raul V. Guerrero is enrolled with Medicare (CMS data updated October 2, 2026).
- 1100 E Norris DrOttawa, IL 61350 (815) 433‑3100
- 124 SW Adams StPeoria, IL 61602
- 1614 E Norris Dr, Obgyn and Anti CoagOttawa, IL 61350 (815) 431‑0435
- 1614 E Norris Dr, OSF Healthcare Medical Group OttawaOttawa, IL 61350 (815) 433‑1010
- 8600 State Route 91, Suite 130Peoria, IL 61615 (309) 683‑5050
Group practices
Medicare enrollment lists Raul V. Guerrero as a member of these groups (CMS data updated October 2, 2026).
- OSF Multi-Specialty Group2,114 clinicians in the group
- Ottawa Regional Hospital and Healthcare Center47 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Ottawa
Clinicians with the same Medicare primary specialty in Ottawa, IL — not a recommendation.
Other clinicians in OSF Multi-Specialty Group
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1983 (43 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1053307660 |
| 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 October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- 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