2026 NPPES data Adult Medicine Physician NPI 1679545339 MD
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KAREN FANUCCI, MD

Adult Medicine Physician in CONCORD, Massachusetts. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
6K
Medicare Part D claims · 457 beneficiaries · Adult Medicine Physician avg: 3K
Generic prescribing
91%
generic claims · 9% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$241.7
13 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: KAREN FANUCCI, MD is a Adult Medicine Physician ([object Object]) practicing in CONCORD, Massachusetts with a Medicare Part D prescribing footprint of 6K claims across 457 beneficiaries — 9% brand-name prescribing . Industry payments of $241.7 across 13 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: KAREN FANUCCI, MD filed 5,549 Medicare Part D claims in 2023 across CONCORD, Massachusetts. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

KAREN FANUCCI, MD 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).

KAREN FANUCCI, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 02/06/2006

NPI 1679545339

Primary specialty

Adult Medicine Physician

Niche

2,481 US NPIs in this specialty

Medicare Part D claims

5,549 98% vs specialty avg

2023 prescription claims

Specialty avg: 2,807

Specialty distribution in Massachusetts

How Adult Medicine Physician compares to other specialties among Massachusetts providers

Massachusetts providers

Adult Medicine Physician share within Massachusetts

1. Adult Medicine Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Adult Medicine Physician share within Massachusetts

Specialty board-certification context

Estimated specialty board-certified rate — Adult Medicine Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Adult Medicine Physician ABMS/AOA estimate

Est. board-certified rate (Adult Medicine Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Adult Medicine Physician) — ABMS / AOA estimate

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).

KAREN FANUCCI, MD is a Adult Medicine Physician provider practicing in CONCORD, Massachusetts, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1679545339. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

KAREN FANUCCI, MD appears in the CMS NPPES registry as a Adult Medicine Physician provider holding MD credentials at 131 OLD ROAD TO 9 ACRE COR, CONCORD, MA, 01742, with a listed phone of (978) 371-7778. NPI 1679545339 was issued on 02/06/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what FANUCCI most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 5,549 prescription claims written by this provider, covering 457 Medicare beneficiaries and totaling roughly $364K in drug spend, split 9% brand-name and 91% generic by claim count, with an opioid prescribing rate of 3.7%. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Adult Medicine Physician is a narrow specialty nationwide, with 2,481 enrolled providers across 52 states and an average of 2,807 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

131 OLD ROAD TO 9 ACRE COR
CONCORD, MA 01742

Provider Details

NPI 1679545339
Specialty Adult Medicine Physician
Credentials MD
Gender Female
NPI Issued 02/06/2006

Hospital and facility affiliations

Facilities where KAREN FANUCCI, MD 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.

EMERSON PRACTICE ASSOCIATES, INC
CONCORD, 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).

Industry payments received (2024) — CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for KAREN FANUCCI, MD. Source: openpaymentsdata.cms.gov.

Total received

$242

Largest payer

PFIZER INC.

Most common payment type

Food and Beverage

Industry payments are not necessarily indicators of bias — they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

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 KAREN FANUCCI, MD. To verify KAREN FANUCCI, MD'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.

Brand vs generic prescribing mix · Generic-heavy

KAREN FANUCCI, MD — brand share 9.0%
Specialty average (est.)

9% brand-name claims vs 91% generic, on 5,549 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

5,549
Total Claims
$364K
Total Drug Cost
457
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
12,040
Total Day Supply
350,919
Brand vs Generic
9% brand / 91% generic
Brand Drug Cost
$251K
Generic Drug Cost
$112K
Opioid Claims
207 (3.7% rate)
Antibiotic Claims
154

Patient Demographics

Average Patient Age
74.1 years
Avg HCC Risk Score
1.00
Gender Split
74% female / 26% male
Age Distribution
<65: 32, 65-74: 204, 75-84: 169, 85+: 52

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Atorvastatin Calcium
356
Amlodipine Besylate
336
Levothyroxine Sodium
307
Lisinopril
239
Omeprazole
176
Metoprolol Succinate
160
Lorazepam
150
Losartan Potassium
146
Simvastatin
143
Gabapentin
140

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Adult Medicine Physician Overview

How KAREN FANUCCI, MD fits within the Adult Medicine Physician landscape nationally.

2,481
Adult Medicine Physician Providers in US
52
States with Adult Medicine Physician
2,807
Avg Claims per Provider

KAREN FANUCCI, MD's 5,549 claims are above the specialty average of 2,807.

Nearby Adult Medicine Physician Providers in Massachusetts

Other clinicians with the same primary specialty enrolled in Massachusetts, drawn from the same CMS NPPES roster as FANUCCI.

Compare Adult Medicine Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is KAREN FANUCCI, MD's specialty?
KAREN FANUCCI, MD specializes in Adult Medicine Physician and practices in CONCORD, Massachusetts. Credentials: MD.
How much does KAREN FANUCCI, MD prescribe under Medicare Part D?
In 2023, KAREN FANUCCI, MD wrote 5,549 Medicare Part D claims totaling $364K in drug costs for 457 beneficiaries.
Where is KAREN FANUCCI, MD located?
KAREN FANUCCI, MD is located at 131 OLD ROAD TO 9 ACRE COR, CONCORD, MA, 01742. Phone: (978) 371-7778.
What is KAREN FANUCCI, MD's NPI number?
KAREN FANUCCI, MD's National Provider Identifier (NPI) is 1679545339, issued on 02/06/2006.
Does KAREN FANUCCI, MD prescribe more brand-name or generic drugs?
KAREN FANUCCI, MD's prescribing is 9% brand-name and 91% generic drugs by claim count, with $251K in brand drug costs.
Does KAREN FANUCCI, MD prescribe opioids?
Yes, KAREN FANUCCI, MD had 207 opioid claims in 2023 with an opioid prescribing rate of 3.7%.
How many Adult Medicine Physician providers are there in the US?
There are 2,481 Adult Medicine Physician providers across 52 states in the US. The average Adult Medicine Physician provider writes 2,807 Medicare Part D claims per year.
What drugs does KAREN FANUCCI, MD prescribe most often?
Based on 2023 Medicare Part D data, KAREN FANUCCI, MD's most frequently prescribed drugs include Atorvastatin Calcium, Amlodipine Besylate, Levothyroxine Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does KAREN FANUCCI, MD accept Medicare?
KAREN FANUCCI, MD appears in CMS Medicare data with 5,549 Part D claims and 457 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify KAREN FANUCCI, MD's credentials?
KAREN FANUCCI, MD's NPI is 1679545339 with credentials MD. 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

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 (2023). 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 April 2026 (NPPES) / 2023 (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