Quick answers
- Which hospitals does John Deleon work at?
- Medicare's official clinician data lists John Deleon at 3 hospitals: Griffin Hospital, Saint Mary's Hospital and Waterbury Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John Deleon see patients?
- Medicare's clinician data lists 5 practice locations, including Waterbury, CT, Middlebury, CT and Southbury, CT. Call before your visit to confirm the address.
- What is John Deleon's specialty?
- Medicare lists Diagnostic Radiology as the primary specialty.
- Does John Deleon accept Medicare assignment?
- Yes. Medicare's clinician data says John Deleon accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for John Deleon?
- (203) 262-6797, as listed in official Medicare / NPI Registry data.
- What is John Deleon's NPI number?
- 1245297654. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where John Deleon works
Medicare's Facility Affiliation Data lists John Deleon at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Griffin HospitalDerby, CT · Acute Care Hospital · CCN 070031
- Saint Mary's HospitalWaterbury, CT · Acute Care Hospital · CCN 070016
- Waterbury HospitalWaterbury, CT · Acute Care Hospital · CCN 070005
Practice locations
Addresses where John Deleon is enrolled with Medicare (CMS data updated 2026-10-02).
- 134 Grandview Ave, Suite 101Waterbury, CT 06708
- 140 Grandview Ave, Suite 204Waterbury, CT 06708 (203) 262‑6797
- 1579 Straits TpkeMiddlebury, CT 06762
- 32 Poverty Rd, Suite BSouthbury, CT 06488 (203) 262‑6797
- 690 Main St S, Suite 7llSouthbury, CT 06488 (203) 566‑0666
Group practices
Medicare enrollment lists John Deleon as a member of these groups (CMS data updated 2026-10-02).
- Diagnostic Radiology Associates LLC24 clinicians in the group
- Valley Imaging Partners LLC6 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Waterbury
Clinicians with the same Medicare primary specialty in Waterbury, CT — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | City University Of New York School Of Medicine |
| Graduation year | 1993 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1245297654 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians