Quick answers
- Does Lorraine M. Hartnett accept Medicare assignment?
- Yes. Medicare's clinician data says Lorraine M. Hartnett accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Lorraine M. Hartnett see?
- In 2024, CMS data shows 20 Original Medicare patients and 61 services for Lorraine M. Hartnett. This counts Original Medicare only and measures volume, not quality.
- What is Lorraine M. Hartnett's NPI number?
- 1801868443. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Lorraine M. Hartnett, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 20 |
|---|---|
| Services billed to Medicare | 61 |
| Different services or procedures | 6 |
| Participating Medicare provider | Yes |
| Average age of these patients | 80 |
Most frequent services
- Removal of skin and tissue, 20.0 sq cm or less (11042)38 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol70%
- Arthritis60%
- Atrial fibrillation55%
Hospitals where Lorraine M. Hartnett works
Medicare's Facility Affiliation Data lists Lorraine M. Hartnett at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Middlesex HospitalMiddletown, CT · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 070020
Practice locations
Addresses where Lorraine M. Hartnett is enrolled with Medicare (CMS data updated October 2, 2026).
- 28 Crescent StMiddletown, CT 06457 (860) 358‑6000
- 534 Saybrook RdMiddletown, CT 06457 (860) 358‑2450
Group practices
Medicare enrollment lists Lorraine M. Hartnett as a member of this group (CMS data updated October 2, 2026).
- Middlesex Hospital234 clinicians in the group
Specialties
Other emergency medicine doctors in Middletown
Clinicians with the same Medicare primary specialty in Middletown, CT — not a recommendation.
Other clinicians in Middlesex Hospital
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | New York University School Of Medicine |
| Graduation year | 1979 (47 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1801868443 |
| 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 October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- 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