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Dr. Mark W. Castaldi, MD

Radiology (Diagnostic Radiology Physician)

  • Medicare participating

At a glance

Years since graduation
27
In the NPI registry since
2006
Medicare patients seen, 2024
2,248

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
    NJ license 25MA08228400 · PA license MD437701
  • Body Imaging Physician
    NJ license 25MA08228400 · PA license MD437701

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

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
2,248
Services billed
26,031
Patients’ average age
73
Most frequent Medicare services, 2023
ServiceTimesPatients
Low osmolar contrast material, 100-199 mg/ml iodine concentration, per ml20,786238
Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml13,957153
Injection, gadoterate meglumine, 0.1 ml79457
Ultrasound of both sides of head and neck blood flow336336
Injection, gadoteridol, (prohance multipack), per ml32120
Ct scan of heart with evaluation of blood vessel calcium274274
Ct scan of abdomen and pelvis with contrast196188
Complete ultrasound scan of abdomen190187
Ultrasound of leg arteries or artery grafts174174
Complete ultrasound study of arm and leg arteries162162

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.

Payments from drug and device companies

In 2025, 1 companies reported 1 payments worth $14.65 in total to this clinician.

By type
Food and Beverage$14.65

From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.

Who received the most in Pennsylvania →

Other Radiology clinicians in Philadelphia

Sources

NPI registry (CMS NPPES, November 2026; record last updated December 22, 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 1447275185. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.