Kristen K. McCarthy, DO

Medicare activity in 2024

Official CMS public-use data for Kristen K. McCarthy, 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. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)332 services
2. Osteopathic manipulative treatment, 9-10 body regions (98929)239 services
3. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)68 services
4. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)31 services
5. Administration of influenza virus vaccine (G0008)25 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 cholesterol73%
• High blood pressure55%
• Arthritis55%
• Anxiety46%
• Depression25%
• Osteoporosis25%

Hospitals where Kristen K. McCarthy works

Medicare's Facility Affiliation Data lists Kristen K. McCarthy 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.

• Emerson Hospital -W Concord, MA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 220084
• Lahey Hospital & Medical Center, BurlingtonBurlington, MA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 220171

Practice locations

Addresses where Kristen K. McCarthy is enrolled with Medicare (CMS data updated October 2, 2026).

• 133 Littleton Rd, Suite 202Westford, MA 01886 (978) 577‑1946

Group practices

Medicare enrollment lists Kristen K. McCarthy as a member of these groups (CMS data updated October 2, 2026).

• Mass General Brigham Medical Group Suburban Massachusetts Inc602 clinicians in the group
• Mass General Brigham Community Physicians Inc428 clinicians in the group

Specialties

• Family Practiceprimary

Find other Family Practice doctors in Massachusetts →

Other family doctors in Westford

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

• Joseph F. Daigneault, MD
• Chander K. Khatri, MD
• Kavitha Gazula, MD
• Katsiaryna Tsyrkunova, MD
• Joseph R. Dawley, MD
• Catherine Trinh, MD
• Truong M. Huynh, MD

All family doctors in Westford →

Other clinicians in Mass General Brigham Medical Group Suburban Massachusetts Inc

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

• Daniel K. Martin
• Matthew R. Leibowitz, MD
• Emily N. Hunter
• David Cheng, MD
• Erika L. Faircloth, DO
• Joseph T. Shortsleeve, 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