Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

John Deleon, MD

Individual provider Diagnostic Radiology Physician · NPI 1245297654

John Deleon, MD practises Diagnostic Radiology in Waterbury, Connecticut. Graduated from City University of New York School of Medicine in 1993, 33 years ago. Practices with Diagnostic Radiology Associates LLC, a 24-clinician group and accepts Medicare assignment. Licensed in Connecticut.

Years since qualifying
33
Trained at
City University of New York School of Medicine
Licensed in
CT
In the registry since
2006
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

134 Grandview Ave Ste 101
Waterbury, CT 06708
Phone: (203) 756-8911
Fax: (203) 574-0548
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Diagnostic Ultrasound Physician (primary) Taxonomy 2085U0001X · Licence 040870 (CT)
Diagnostic Radiology Physician Taxonomy 2085R0202X · Licence 040870 (CT)

Record details

NPI number1245297654
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 28, 2006
Last updated in NPPESJuly 13, 2026

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyDIAGNOSTIC RADIOLOGY
Medical schoolCITY UNIVERSITY OF NEW YORK SCHOOL OF MEDICINE
Graduated 1993 (33 years in practice)
Group practice Diagnostic Radiology Associates Llc — 24 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients1,764
Services billed 10,472 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

  • Griffin Hospital Hospital · Derby, CT · listed as The Griffin Hospital
  • Saint Mary'S Hospital Hospital · Waterbury, CT · listed as Saint Mary's Hospital, Inc
  • Waterbury Hospital Hospital · Waterbury, CT

Colleagues at Diagnostic Radiology Associates LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 24 clinicians in the practice; 7 are shown here.

Other providers in Waterbury