Quick answers
- Which hospitals does Kelly Hanretta work at?
- Medicare's official clinician data lists Kelly Hanretta at 5 hospitals: Lawrence & Memorial Hospital, Westerly Hospital, William W Backus Hospital, Windham Community Memorial Hospital and Yale-New Haven Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Kelly Hanretta see patients?
- Medicare's clinician data lists 4 practice locations, including Mystic, CT, Guilford, CT and Westerly, RI. Call before your visit to confirm the address.
- What is Kelly Hanretta's specialty?
- Medicare lists Cardiovascular Disease (Cardiology) as the primary specialty.
- Does Kelly Hanretta accept Medicare assignment?
- Yes. Medicare's clinician data says Kelly Hanretta 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 Kelly Hanretta?
- (860) 572-5400, as listed in official Medicare / NPI Registry data.
- What is Kelly Hanretta's NPI number?
- 1295048502. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Kelly Hanretta works
Medicare's Facility Affiliation Data lists Kelly Hanretta at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Lawrence & Memorial HospitalNew London, CT · Acute Care Hospital · CCN 070007
- Westerly HospitalWesterly, RI · Acute Care Hospital · CCN 410013
- William W Backus HospitalNorwich, CT · Acute Care Hospital · CCN 070024
- Windham Community Memorial HospitalWillimantic, CT · Acute Care Hospital · CCN 070021
- Yale-New Haven HospitalNew Haven, CT · Acute Care Hospital · CCN 070022
Practice locations
Addresses where Kelly Hanretta is enrolled with Medicare (CMS data updated 2026-10-02).
- 100 Perkins Farm Dr, Suite 301Mystic, CT 06355 (860) 572‑5400
- 111 Goose LnGuilford, CT 06437 (203) 747‑7300
- 45 Wells St, Suite 102Westerly, RI 02891 (401) 596‑4499
- 800 Howard AveNew Haven, CT 06519 (203) 785‑2140
Group practices
Medicare enrollment lists Kelly Hanretta as a member of these groups (CMS data updated 2026-10-02).
- Yale University2,645 clinicians in the group
- Hartford Healthcare Medical Group Specialists PLLC1,588 clinicians in the group
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in Connecticut →
Other cardiologists in Mystic
Clinicians with the same Medicare primary specialty in Mystic, CT — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | New York College Of Osteo Medicine Of New York Institute Of Technology |
| Graduation year | 2006 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1295048502 |
| 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