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Dr. Derek C. Diffendaffer, M.D.

Radiology (Diagnostic Radiology Physician)

  • Medicare participating

At a glance

Years since graduation
14
In the NPI registry since
2012
Medicare patients seen, 2024
1,544

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. What an NPI is

Education and training

  • 2012Registered with an NPI (national billing number; not a license date)

Medicare’s Care Compare data doesn’t list this clinician’s medical school. 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

  • Diagnostic Radiology Physician primary
    VA license 0101289154

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

Map: Radiology 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
1,544
Services billed
3,000
Patients’ average age
74
Most frequent Medicare services, 2023
ServiceTimesPatients
Screening mammography278278
Screening 3d breast mammography267267
X-ray of chest, 1 view215208
Mri scan of lower spinal canal without contrast174174
X-ray of chest, 2 views140140
Dxa bone density measurement of hip, pelvis, spine139139
Ct scan of chest without contrast108107
Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066)9385
Ct scan head or brain without contrast7977
Mri scan of upper spinal canal without contrast7272

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 Radiology clinicians in North Chesterfield

Sources

NPI registry (CMS NPPES, November 2026; record last updated July 17, 2026), 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 Information is self-reported or billed data and may be out of date; call before visiting.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 1558629113. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.