NPI registry status
Active
2026 NPPES data Family Medicine Physician NPI 1457588162 D.O.
Verify on CMS → Kristen McCarthy, D.O.
Family Medicine Physician in Westford, Massachusetts.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 150,125 in Family Medicine Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
1K
Medicare Part D claims · 176 beneficiaries · Family Medicine Physician avg: 4K
What the federal data shows
Kristen McCarthy, D.O. filed 1,127 Medicare Part D claims in 2024 as a Family Medicine Physician in Westford, Massachusetts.
- 1K
- Part D claims, 2024
- Likely
- board-certified (heuristic)
- ≥77th
- pct by Part D claim volume (lower-bound band)
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Federal trust snapshot
What official records show about Kristen McCarthy, D.O.
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1457588162), first enumerated 06/20/2009.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 1,127 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- State context
State board disciplinary context
Massachusetts statewide board action statistics are published annually — these figures describe aggregate state activity, not Kristen McCarthy, D.O.'s individual license status. Verify directly with the state medical board.
Source: BORIM annual report 2023
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1457588162 · Family Medicine Physician
NPI-10 · ENUM-MID · TAX-MEGA · RX-MID · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1457588162
- ENUM-MID 2009
- TAX-MEGA 150K Family Medicine
- RX-MID 1,127
- BOOK-LIGHT 2,226 in Massachusetts
- PHOTO-ENUM Aaron Killpack · 2009
Kristen McCarthy, D.O.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
1,127 ≥ 77th percentile 77% of 1,416,883 prescribers are in lower value bands
Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
✓
Board certification likely (heuristic, not verified)
Kristen McCarthy, D.O. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Kristen McCarthy, D.O.?
Quality data not reportedPrimary specialty
Family Medicine Physician
Medicare Part D claims
1,127 68% vs specialty avg
Specialty distribution in Massachusetts
How Family Medicine Physician compares to other specialties among Massachusetts providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Family Medicine Physician. Verify directly:
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Practice Address
Provider Details
| NPI | 1457588162 |
|---|---|
| Specialty | Family Medicine Physician |
| Credentials | D.O. |
| Gender | Female |
| NPI Issued | 06/20/2009 |
Hospital and facility affiliations
Facilities where Kristen McCarthy, D.O. bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
Mass General Brigham Community Physicians Inc
Westford, MA
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
License & disciplinary context - Massachusetts BORIM 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~38K Massachusetts medical licensees in 2023 - they are NOT specific to Kristen McCarthy, D.O.. To verify Kristen McCarthy, D.O.'s current license status, search the BORIM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
80
Total board actions, Massachusetts 2023
Across 78 cases
2.11
Actions per 1,000 licensees
Massachusetts statewide rate
probation
Most common action type
29 cases
BORIM publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Massachusetts disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
1,127
Total Claims
$54K
Total Drug Cost
176
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,466.433
- Total Day Supply
- 70,676
- Generic Drug Cost
- $23K
- Opioid Claims
- 86 (7.6% rate)
- Antibiotic Claims
- 24
Patient Demographics
- Average Patient Age
- 72.9 years
- Avg HCC Risk Score
- 0.90
- Gender Split
- 78% female / 22% male
- Age Distribution
- <65: 14, 65-74: 92, 75-84: 50, 85+: 20
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Kristen McCarthy, D.O. prescribes most
Top Medicare Part D drugs by claim count, 2024
- Atorvastatin Calcium
Atorvastatin Calcium
95 claims
- Levothyroxine Sodium
Levothyroxine Sodium
72 claims
- Lisinopril
Lisinopril
44 claims
- Gabapentin
Gabapentin
42 claims
- Amlodipine Besylate 37
Amlodipine Besylate
37 claims
- Losartan Potassium 36
Losartan Potassium
36 claims
- Rosuvastatin Calcium 32
Rosuvastatin Calcium
32 claims
- Tramadol Hcl 31
Tramadol Hcl
31 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 95 |
| Levothyroxine Sodium | 72 |
| Lisinopril | 44 |
| Gabapentin | 42 |
| Amlodipine Besylate | 37 |
| Losartan Potassium | 36 |
| Rosuvastatin Calcium | 32 |
| Tramadol Hcl | 31 |
| Omeprazole | 28 |
| Lorazepam | 26 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Family Medicine Physician Overview
How Kristen McCarthy, D.O. fits within the Family Medicine Physician landscape nationally.
150,125
Family Medicine Physician Providers in US
56
States with Family Medicine Physician
3,519
Avg Claims per Provider
Kristen McCarthy, D.O.'s 1,127 claims are below the specialty average of 3,519.
Nationwide Family Medicine Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for McCarthy, both outside Massachusetts so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2009)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Family Medicine Physician Providers in Massachusetts
Other clinicians with the same primary specialty enrolled in Massachusetts, drawn from the same CMS NPPES roster as McCarthy.
One of 2,226 Family Medicine Physician providers enrolled in Massachusetts, 5 are shown here.
Dr. Salah Abass
M.D.
Methuen, MA
Dr. Sheila Abdallah
MD
Worcester, MA
Dr. Jonathan Abel
DO
Springfield, MA
Dr. Mohamed Abib
MD
Sturbridge, MA
Dr. Kevin Abraham
M.D.
Worcester, MA
Compare Family Medicine Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Kristen McCarthy, D.O.'s specialty? ▼
Kristen McCarthy, D.O. specializes in Family Medicine Physician and practices in Westford, Massachusetts. Credentials: D.O..
How much does Kristen McCarthy, D.O. prescribe under Medicare Part D? ▼
In 2024, Kristen McCarthy, D.O. wrote 1,127 Medicare Part D claims totaling $54K in drug costs for 176 beneficiaries.
Where is Kristen McCarthy, D.O. located? ▼
Kristen McCarthy, D.O. is located at 133 LITTLETON RD, Westford, MA, 01886. Phone: (978) 577-1946.
What is Kristen McCarthy, D.O.'s NPI number? ▼
Kristen McCarthy, D.O.'s National Provider Identifier (NPI) is 1457588162, issued on 06/20/2009.
Does Kristen McCarthy, D.O. prescribe opioids? ▼
Yes, Kristen McCarthy, D.O. had 86 opioid claims in 2024 with an opioid prescribing rate of 7.6%.
How many Family Medicine Physician providers are there in the US? ▼
There are 150,125 Family Medicine Physician providers across 56 states in the US. The average Family Medicine Physician provider writes 3,519 Medicare Part D claims per year.
What drugs does Kristen McCarthy, D.O. prescribe most often? ▼
Based on 2024 Medicare Part D data, Kristen McCarthy, D.O.'s most frequently prescribed drugs include Atorvastatin Calcium, Levothyroxine Sodium, Lisinopril. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Kristen McCarthy, D.O. accept Medicare? ▼
Kristen McCarthy, D.O. appears in CMS Medicare data with 1,127 Part D claims and 176 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Kristen McCarthy, D.O.'s credentials? ▼
Kristen McCarthy, D.O.'s NPI is 1457588162 with credentials D.O.. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2024). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of August 2026 (NPPES) / 2024 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.