Quick answers
- Does Lisa Massie accept Medicare assignment?
- Yes. Medicare's clinician data says Lisa Massie 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 Lisa Massie see?
- In 2024, CMS data shows 2,239 Original Medicare patients and 3,251 services for Lisa Massie. This counts Original Medicare only and measures volume, not quality.
- What is Lisa Massie's NPI number?
- 1053366757. 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 Lisa Massie, 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 | 2,239 |
|---|---|
| Services billed to Medicare | 3,251 |
| Different services or procedures | 44 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)1,308 services
- Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)613 services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)308 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)176 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)75 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 cholesterol75%
- Arthritis51%
- Ischemic heart disease49%
- Atrial fibrillation44%
- Heart failure42%
Hospitals where Lisa Massie works
Medicare's Facility Affiliation Data lists Lisa Massie 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.
- Hartford HospitalHartford, CT · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 070025
- Manchester Memorial HospitalManchester, CT · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 070027
- Middlesex HospitalMiddletown, CT · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 070020
- William W Backus HospitalNorwich, CT · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 070024
- Windham Community Memorial HospitalWillimantic, CT · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 070021
Practice locations
Addresses where Lisa Massie is enrolled with Medicare (CMS data updated October 2, 2026).
- 339 W Main StAvon, CT 06001 (860) 524‑3058
- 711 Cottage Grove RdBloomfield, CT 06002 (860) 242‑8756
Group practices
Medicare enrollment lists Lisa Massie as a member of this group (CMS data updated October 2, 2026).
- Hartford Healthcare Medical Group Specialists PLLC1,588 clinicians in the group
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in Connecticut →
Other cardiologists in Avon
Clinicians with the same Medicare primary specialty in Avon, CT — not a recommendation.
Other clinicians in Hartford Healthcare Medical Group Specialists PLLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1993 (33 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1053366757 |
| 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