Quick answers
- Which hospitals does Lynn E. Mastrianni work at?
- Medicare's official clinician data lists Lynn E. Mastrianni at 5 hospitals: Bridgeport Hospital, Greenwich Hospital Association -, Hartford Hospital, Lawrence & Memorial Hospital and Yale-New Haven Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Lynn E. Mastrianni see patients?
- Medicare's clinician data lists 3 practice locations, including New Haven, CT, Fairfield, CT and Avon, CT. Call before your visit to confirm the address.
- What is Lynn E. Mastrianni's specialty?
- Medicare lists Nurse Practitioner as the primary specialty.
- Does Lynn E. Mastrianni accept Medicare assignment?
- Yes. Medicare's clinician data says Lynn E. Mastrianni 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.
- Does Lynn E. Mastrianni offer telehealth?
- Medicare's clinician data says Lynn E. Mastrianni offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Lynn E. Mastrianni?
- (203) 785-4638, as listed in official Medicare / NPI Registry data.
- What is Lynn E. Mastrianni's NPI number?
- 1205177672. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Lynn E. Mastrianni works
Medicare's Facility Affiliation Data lists Lynn E. Mastrianni at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Bridgeport HospitalBridgeport, CT · Acute Care Hospital · CCN 070010
- Greenwich Hospital Association -Greenwich, CT · Acute Care Hospital · CCN 070018
- Hartford HospitalHartford, CT · Acute Care Hospital · CCN 070025
- Lawrence & Memorial HospitalNew London, CT · Acute Care Hospital · CCN 070007
- Yale-New Haven HospitalNew Haven, CT · Acute Care Hospital · CCN 070022
Practice locations
Addresses where Lynn E. Mastrianni is enrolled with Medicare (CMS data updated 2026-10-02).
- 20 York StNew Haven, CT 06510 (203) 785‑4638
- 222 Post Rd, Suite EFairfield, CT 06824 (203) 255‑8888
- 80 Fisher DrAvon, CT 06001 (860) 696‑1000
Group practices
Medicare enrollment lists Lynn E. Mastrianni as a member of these groups (CMS data updated 2026-10-02).
- Yale University2,645 clinicians in the group
- Hartford Hospital1,044 clinicians in the group
- Ptsma Inc224 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in New Haven
Clinicians with the same Medicare primary specialty in New Haven, CT — not a recommendation.
Clinician information
| Graduation year | 2013 |
|---|---|
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1205177672 |
| 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