Quick answers
- Which hospitals does John N. Chafos work at?
- Medicare's official clinician data lists John N. Chafos at 1 hospital: Robert Wood Johnson University Hospital - Somerset…. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John N. Chafos see patients?
- Medicare's clinician data lists 3 practice locations, including Hillsborough, NJ and Green Brook, NJ. Call before your visit to confirm the address.
- What is John N. Chafos's specialty?
- Medicare lists Family Practice as the primary specialty, and also Emergency Medicine.
- Does John N. Chafos accept Medicare assignment?
- Yes. Medicare's clinician data says John N. Chafos 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 John N. Chafos?
- (908) 262-2263, as listed in official Medicare / NPI Registry data.
- What is John N. Chafos's NPI number?
- 1871673830. 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 N. Chafos works
Medicare's Facility Affiliation Data lists John N. Chafos at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Robert Wood Johnson University Hospital - Somerset…Somerville, NJ · Acute Care Hospital · CCN 310048
Practice locations
Addresses where John N. Chafos is enrolled with Medicare (CMS data updated 2026-10-02).
- 256 US Hwy 206Hillsborough, NJ 08844 (908) 262‑2263
- 257 Route 22 EGreen Brook, NJ 08812 (732) 968‑7878
- Family Care PA, 257 Route 22 EastGreen Brook, NJ 08812
Group practices
Medicare enrollment lists John N. Chafos as a member of this group (CMS data updated 2026-10-02).
- Family Care PA10 clinicians in the group
Specialties
- Family Practiceprimary
- Emergency Medicinealso
Other family doctors in Hillsborough
Clinicians with the same Medicare primary specialty in Hillsborough, NJ — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Tufts University School Of Medicine |
| Graduation year | 1988 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1871673830 |
| 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