Quick answers
- Which hospitals does Jonathan A. Cosin work at?
- Medicare's official clinician data lists Jonathan A. Cosin at 3 hospitals: Hartford Hospital, Middlesex Hospital and The Hospital of Central Connecticut. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Jonathan A. Cosin see patients?
- Medicare's clinician data lists 8 practice locations, including New Britain, CT, Marlborough, CT and Middletown, CT. Call before your visit to confirm the address.
- What is Jonathan A. Cosin's specialty?
- Medicare lists Gynecological Oncology as the primary specialty, and also Obstetrics/Gynecology.
- Does Jonathan A. Cosin accept Medicare assignment?
- Yes. Medicare's clinician data says Jonathan A. Cosin 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 Jonathan A. Cosin?
- (860) 358-2850, as listed in official Medicare / NPI Registry data.
- What is Jonathan A. Cosin's NPI number?
- 1417936139. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Jonathan A. Cosin works
Medicare's Facility Affiliation Data lists Jonathan A. Cosin at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Hartford HospitalHartford, CT · Acute Care Hospital · CCN 070025
- Middlesex HospitalMiddletown, CT · Acute Care Hospital · CCN 070020
- The Hospital of Central ConnecticutNew Britain, CT · Acute Care Hospital · CCN 070035
Practice locations
Addresses where Jonathan A. Cosin is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 8; the Medicare profile lists all.
- 100 Grand StNew Britain, CT 06052
- 14 Jones Hollow Rd, Suite 2Marlborough, CT 06447 (860) 358‑2850
- 183 N Mountain RdNew Britain, CT 06053
- 183 N Mountain Rd, Fl 2New Britain, CT 06053 (860) 827‑4180
- 28 Crescent StMiddletown, CT 06457
Group practices
Medicare enrollment lists Jonathan A. Cosin as a member of these groups (CMS data updated 2026-10-02).
- Hartford Hospital1,044 clinicians in the group
- The Hospital of Central Connecticut at New Britain General and Bradley399 clinicians in the group
- The Charlotte Hungerford Hospital200 clinicians in the group
- MHS Primary Care, Inc.180 clinicians in the group
Specialties
- Gynecological Oncologyprimary
- Obstetrics/Gynecologyalso
Other gynecologic oncologists in New Britain
Clinicians with the same Medicare primary specialty in New Britain, CT — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | New York Medical College |
| Graduation year | 1991 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1417936139 |
| 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