Alison G. Killelea, MD

Medicare activity in 2024

Official CMS public-use data for Alison G. Killelea, 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.

Most frequent services

1. Emergency department visit with moderate level of medical decision making (99284)146 services
2. Emergency department visit with low level of medical decision making (99283)108 services
3. Emergency department visit with high level of medical decision making (99285)58 services
4. Emergency department visit with straightforward medical decision making (99282)21 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 cholesterol62%
• Diabetes54%
• Arthritis41%
• Chronic kidney disease24%
• Ischemic heart disease19%

Hospitals where Alison G. Killelea works

Medicare's Facility Affiliation Data lists Alison G. Killelea 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.

• Martha's Vineyard Hospital IncOak Bluffs, MA · Critical Access Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 221300
• Mercy Medical CenterSpringfield, MA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 220066

Practice locations

Addresses where Alison G. Killelea is enrolled with Medicare (CMS data updated October 2, 2026).

• 1 Hospital RdOak Bluffs, MA 02557
• 271 Carew StSpringfield, MA 01104 (413) 748‑9000

Group practices

Medicare enrollment lists Alison G. Killelea as a member of these groups (CMS data updated October 2, 2026).

• Martha's Vineyard Hospital Inc155 clinicians in the group
• Vituity-Massachusetts PLLC46 clinicians in the group

Specialties

• General Practiceprimary

Find other General Practice doctors in Massachusetts →

Other general practitioners in Massachusetts

Clinicians with the same Medicare primary specialty in Massachusetts — not a recommendation.

• Alexa Triot, MD
• Daniel Muse, MD
• Stefan A. Topolski, MD
• Michael A. Pellegrino, DO
• Gloria V. Mercado Rebello, MD
• Suzanne C. Sarfaty, MD
• Vasumathi K. Brown, MD
• John C. Nadolny, MD

All general practitioners in Massachusetts →

Other clinicians in Martha's Vineyard Hospital Inc

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

• Hugh F. Harwood, MD
• Jeffrey A. Horenstein
• Kendra C. Jarrell, NP
• Nancy E. Leport, CNM
• Elizabeth A. Erban, MD
• Julia C. Stunkel, MD

Clinician information

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

1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
6. Medicare Care Compare — official Medicare tool to look up clinicians