Skip to main content

Dr. Jack C. Chaffin JR., MD

Pathology (Anatomic Pathology & Clinical Pathology Physician)

  • Medicare participating

At a glance

Years since graduation
50
In the NPI registry since
2006
Medicare patients seen, 2024
596

The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. NPIs were first issued in May 2005 and became required on claims in 2007–2008, so an early date usually means the clinician was already in practice before then. What an NPI is

Education and training

  • 1976Medical school: Loma Linda University School of Medicine
  • 2006Registered with an NPI (national billing number; not a license date) — NPIs began in 2005, so practice likely started earlier

Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).

Specialties and state licenses

  • Anatomic Pathology & Clinical Pathology Physician primary
    ID license M8872
  • Cytopathology Physician
    ID license M8872

As reported to the NPI registry. To confirm a license is current, check the state medical board.

Map: Pathology per capita by county →

Where they work

Hospitals

Medical groups

Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.

Medicare patients and services

Medicare patients, 2024
596
Services billed
1,465
Patients’ average age
74
Most frequent Medicare services, 2023
ServiceTimesPatients
Pathology examination of tissue using a microscope, intermediate complexity544336
Pathology examination of tissue using a microscope, moderately high complexity231128
Protein measurement, serum228173
Special stained specimen slides to examine tissue, each additional procedure18659
Special stained specimen slides to examine tissue, initial procedure132101
Microscopic genetic analysis of tumor, manual7624
Pathology examination of tissue using a microscope, moderately low complexity6461
Preparation of tissue for examination by removing any calcium present6052
Evaluation of fine needle aspirate with interpretation and report5242
Evaluation of fine needle aspirate4938

Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.

Other Pathology clinicians in Boise

Sources

NPI registry (CMS NPPES, November 2026; record last updated October 13, 2011), Medicare Care Compare, Medicare Physician & Other Practitioners (2024), Medicare Part D Prescribers (2024) and Open Payments (2025). Information is self-reported or billed data and may be out of date; call before visiting.

NPI 1104867662. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.