Quick answers
- Which hospitals does Jack C. Chaffin Jr. work at?
- Medicare's official clinician data lists Jack C. Chaffin Jr. at 5 hospitals: Saint Alphonsus Medical Center - Nampa, Saint Alphonsus Medical Center Ontario, Saint Alphonsus Regional Medical Center, St Luke's Regional Medical Center and St. Alphonsus Medical Center - Baker City. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Jack C. Chaffin Jr. see patients?
- Medicare's clinician data lists 1 practice location in Boise, ID. Call before your visit to confirm the address.
- What is Jack C. Chaffin Jr.'s specialty?
- Medicare lists Pathology as the primary specialty.
- Does Jack C. Chaffin Jr. accept Medicare assignment?
- Yes. Medicare's clinician data says Jack C. Chaffin Jr. 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 Jack C. Chaffin Jr.?
- (208) 367-2121, as listed in official Medicare / NPI Registry data.
- What is Jack C. Chaffin Jr.'s NPI number?
- 1104867662. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Jack C. Chaffin Jr. works
Medicare's Facility Affiliation Data lists Jack C. Chaffin Jr. at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Saint Alphonsus Medical Center - NampaNampa, ID · Acute Care Hospital · CCN 130013
- Saint Alphonsus Medical Center OntarioOntario, OR · Acute Care Hospital · CCN 380052
- Saint Alphonsus Regional Medical CenterBoise, ID · Acute Care Hospital · CCN 130007
- St Luke's Regional Medical CenterBoise, ID · Acute Care Hospital · CCN 130006
- St. Alphonsus Medical Center - Baker CityBaker City, OR · Critical Access Hospital · CCN 381315
Practice locations
Addresses where Jack C. Chaffin Jr. is enrolled with Medicare (CMS data updated 2026-10-02).
- 1055 N Curtis RdBoise, ID 83706 (208) 367‑2121
Group practices
Medicare enrollment lists Jack C. Chaffin Jr. as a member of this group (CMS data updated 2026-10-02).
- Saint Alphonsus Regional Medical Center Inc680 clinicians in the group
Specialties
- Pathologyprimary
Other pathologists in Boise
Clinicians with the same Medicare primary specialty in Boise, ID — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Loma Linda University School Of Medicine |
| Graduation year | 1976 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1104867662 |
| 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