Quick answers
- Does Elizabeth K. Nelligan accept Medicare assignment?
- Yes. Medicare's clinician data says Elizabeth K. Nelligan 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 Elizabeth K. Nelligan see?
- In 2024, CMS data shows 315 Original Medicare patients and 1,105 services for Elizabeth K. Nelligan. This counts Original Medicare only and measures volume, not quality.
- What is Elizabeth K. Nelligan's NPI number?
- 1174663884. 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 Elizabeth K. Nelligan, 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 | 315 |
|---|---|
| Services billed to Medicare | 1,105 |
| Different services or procedures | 33 |
| Participating Medicare provider | Yes |
| Average age of these patients | 78 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)366 services
- Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)208 services
- Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month (99490)75 services
- Injection of drug or substance under skin or into muscle (96372)68 services
- Injection, vitamin b-12 cyanocobalamin, up to 1000 mcg (J3420)67 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 cholesterol75%
- High blood pressure71%
- Arthritis40%
- Atrial fibrillation23%
- Ischemic heart disease20%
- Anxiety20%
Hospitals where Elizabeth K. Nelligan works
Medicare's Facility Affiliation Data lists Elizabeth K. Nelligan 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.
- Berkshire Medical CenterPittsfield, MA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 220046
- Lawrence & Memorial HospitalNew London, CT · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 070007
- Middlesex HospitalMiddletown, CT · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 070020
- Yale-New Haven HospitalNew Haven, CT · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 070022
Practice locations
Addresses where Elizabeth K. Nelligan is enrolled with Medicare (CMS data updated October 2, 2026).
- 147 Westbrook RdEssex, CT 06426 (860) 358‑5065
- 270 Main St, Suite APortland, CT 06480 (860) 358‑5040
Group practices
Medicare enrollment lists Elizabeth K. Nelligan as a member of this group (CMS data updated October 2, 2026).
- MHS Primary Care, Inc.180 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Essex
Clinicians with the same Medicare primary specialty in Essex, CT — not a recommendation.
Other clinicians in MHS Primary Care, Inc.
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1999 (27 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1174663884 |
| 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