Quick answers
- Which hospitals does Michael J. Granieri work at?
- Medicare's official clinician data lists Michael J. Granieri at 1 hospital: Waterbury Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Michael J. Granieri see patients?
- Medicare's clinician data lists 2 practice locations, including Waterbury, CT. Call before your visit to confirm the address.
- What is Michael J. Granieri's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Michael J. Granieri accept Medicare assignment?
- Medicare's clinician data says Michael J. Granieri may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- What is the phone number for Michael J. Granieri?
- (203) 573-7284, as listed in official Medicare / NPI Registry data.
- What is Michael J. Granieri's NPI number?
- 1730767229. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Michael J. Granieri works
Medicare's Facility Affiliation Data lists Michael J. Granieri at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Waterbury HospitalWaterbury, CT · Acute Care Hospital · CCN 070005
Practice locations
Addresses where Michael J. Granieri is enrolled with Medicare (CMS data updated 2026-10-02).
- 160 Robbins StWaterbury, CT 06708 (203) 573‑7284
- 64 Robbins StWaterbury, CT 06708 (203) 573‑6263
Group practices
Medicare enrollment lists Michael J. Granieri as a member of these groups (CMS data updated 2026-10-02).
- Prospect Ct Medical Foundation Inc282 clinicians in the group
- Uconn Health Community Network Medical Group, Inc.78 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Waterbury
Clinicians with the same Medicare primary specialty in Waterbury, CT — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Alabama College Of Osteopathic Medicine |
| Graduation year | 2021 |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1730767229 |
| 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