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Dr. William J. Klein, MD

Radiology (Diagnostic Radiology Physician)

  • Medicare participating

At a glance

Years since graduation
28
In the NPI registry since
2006
Medicare patients seen, 2024
5,124

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

  • 2006Registered with an NPI (national billing number; not a license date) — NPIs began in 2005, so practice likely started earlier

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
    TN license 41111 · LA license 024282 · MS license 29913 · VA license 0601236324

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
5,124
Services billed
6,868
Patients’ average age
74
Most frequent Medicare services, 2023
ServiceTimesPatients
Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml76,120682
Injection, gadolinium-based magnetic resonance contrast agent, not otherwise specified (nos), per ml1,42069
Ct scan of chest with contrast790659
Ct scan of abdomen and pelvis with contrast780683
X-ray of chest, 1 view300276
Ct scan of chest without contrast226213
Nuclear medicine study from skull base to mid-thigh with ct scan189188
X-ray of chest, 2 views180178
Ct scan of abdomen and pelvis without contrast153147
Mri scan of brain before and after contrast143141

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 Germantown

Sources

NPI registry (CMS NPPES, November 2026; record last updated March 11, 2022), 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 1871548818. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.