Quick answers
- Which hospitals does John R. Deforest work at?
- Medicare's official clinician data lists John R. Deforest at 5 hospitals: Franciscan Health Crown Point, Franciscan Health Dyer, Franciscan Health Olympia & Chicago Heights, Northwestern Medicine Central Dupage Hospital and Riverside Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John R. Deforest see patients?
- Medicare's clinician data lists 1 practice location in Beecher, IL. Call before your visit to confirm the address.
- What is John R. Deforest's specialty?
- Medicare lists Family Practice as the primary specialty.
- Does John R. Deforest accept Medicare assignment?
- Yes. Medicare's clinician data says John R. Deforest 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.
- Does John R. Deforest offer telehealth?
- Medicare's clinician data says John R. Deforest offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for John R. Deforest?
- (708) 946-9330, as listed in official Medicare / NPI Registry data.
- What is John R. Deforest's NPI number?
- 1003842964. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where John R. Deforest works
Medicare's Facility Affiliation Data lists John R. Deforest at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Franciscan Health Crown PointCrown Point, IN · Acute Care Hospital · CCN 150126
- Franciscan Health DyerDyer, IN · Acute Care Hospital · CCN 150090
- Franciscan Health Olympia & Chicago HeightsOlympia Fields, IL · Acute Care Hospital · CCN 140172
- Northwestern Medicine Central Dupage HospitalWinfield, IL · Acute Care Hospital · CCN 140242
- Riverside Medical CenterKankakee, IL · Acute Care Hospital · CCN 140186
Practice locations
Addresses where John R. Deforest is enrolled with Medicare (CMS data updated 2026-10-02).
- 715 S Dixie HwyBeecher, IL 60401 (708) 946‑9330
Specialties
- Family Practiceprimary
Other family doctors in Illinois
Clinicians with the same Medicare primary specialty in Illinois — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Chicago College Of Osteopathy |
| Graduation year | 1992 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1003842964 |
| 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