Carina J. O Neill, DO

Medicare activity in 2024

Official CMS public-use data for Carina J. O Neill, 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. Injection of trigger points, 3 or more muscles (20553)223 services
2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)196 services
3. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)114 services
4. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)63 services
5. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)48 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).

• Arthritis68%
• High cholesterol66%
• High blood pressure64%
• Anxiety28%
• Depression26%
• Osteoporosis24%

Hospitals where Carina J. O Neill works

Medicare's Facility Affiliation Data lists Carina J. O Neill 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.

• Brigham and Women Faulkner HospitalJamaica Plain, MA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 220119
• Brigham and Women's HospitalBoston, MA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 220110

Practice locations

Addresses where Carina J. O Neill is enrolled with Medicare (CMS data updated October 2, 2026).

• 55 Fruit StBoston, MA 02114 (617) 724‑0287

Group practices

Medicare enrollment lists Carina J. O Neill as a member of this group (CMS data updated October 2, 2026).

• Massachusetts General Physicians Organization Inc3,558 clinicians in the group

Specialties

• Physical Medicine and Rehabilitationprimary

Find other Physical Medicine and Rehabilitation doctors in Massachusetts →

Other rehabilitation doctors in Boston

Clinicians with the same Medicare primary specialty in Boston, MA — not a recommendation.

• Julia Webb, MD
• Nadia Zaman, DO
• Rebecca D. Greenspan, DO
• Mitra D. McLarney, MD
• Carol Hartigan, MD
• Dayna Yorks, DO
• Marwa A. Ahmed, MD
• Razvan P. Turcu, MD

All rehabilitation doctors in Boston →

Other clinicians in Massachusetts General Physicians Organization Inc

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

• Laura Cohen, MD
• Emily Sheridan, CNA
• Amirkasra Mojtahed
• Bridget S. Wulfing, PA
• Aditya Chennojwala, MD
• Pablo Gomery, 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