2026 NPPES data Family Nurse Practitioner NPI 1538105903 FNP
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Sharon Rousseau, FNP

Family Nurse Practitioner in Mashpee, 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
347
Medicare Part D claims · 67 beneficiaries · Family Nurse Practitioner avg: 1K
Generic prescribing
53%
generic claims · 47% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$529.62
10 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

Sharon Rousseau, FNP filed 347 Medicare Part D claims in 2023 as a Family Nurse Practitioner in Mashpee, Massachusetts, prescribing 53% generic.

347
Part D claims, 2023
53%
generic prescribing
$529.62
industry payments (Sunshine Act)

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.

Sharon Rousseau, FNP's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

347 Top 43% higher than 57% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). This entry sits in this band. 400–600: 90,619 prescribers (7%). Above this entry. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

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.

Source CMS Medicare Part D Prescriber Public Use File · 2023

What does the federal data show about Sharon Rousseau, FNP?

Quality data not reported

NPI registry status

Active

Issued 06/22/2006

NPI 1538105903

Primary specialty

Family Nurse Practitioner

High-volume

209,817 US NPIs in this specialty

Medicare Part D claims

347 72% vs specialty avg

2023 prescription claims

Specialty avg: 1,222

Specialty distribution in Massachusetts

How Family Nurse Practitioner compares to other specialties among Massachusetts providers

Massachusetts providers

Family Nurse Practitioner share within Massachusetts

1. Family Nurse Practitioner42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Family Nurse Practitioner share within Massachusetts

Specialty board-certification context

Estimated specialty board-certified rate — Family Nurse Practitioner (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Family Nurse Practitioner ABMS/AOA estimate

Est. board-certified rate (Family Nurse Practitioner) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Family Nurse Practitioner) — 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).

Sharon Rousseau, FNP appears in the CMS NPPES registry as a Family Nurse Practitioner provider holding FNP credentials at 107 COMMERCIAL ST, Mashpee, MA, 02649, with a listed phone of (508) 477-7090. NPI 1538105903 was issued on 06/22/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Rousseau 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 347 prescription claims written by this provider, covering 67 Medicare beneficiaries and totaling roughly $159K in drug spend, split 47% brand-name and 53% generic by claim count. 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.

Family Nurse Practitioner is a high-volume specialty nationwide, with 209,817 enrolled providers across 56 states and an average of 1,222 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

107 COMMERCIAL ST
Mashpee, MA 02649

Provider Details

NPI 1538105903
Specialty Family Nurse Practitioner
Credentials FNP
Gender Female
NPI Issued 06/22/2006

Hospital and facility affiliations

Facilities where Sharon Rousseau, FNP 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.

Affinity Physicians LLC.
Warwick, RI

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 Sharon Rousseau, FNP. Source: openpaymentsdata.cms.gov.

Total received

$530

Largest payer

Lilly USA, LLC

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 Sharon Rousseau, FNP. To verify Sharon Rousseau, FNP'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 · Above average

Sharon Rousseau, FNP — brand share 47.0%
Specialty average (est.)

47% brand-name claims vs 53% generic, on 347 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.

347
Total Claims
$159K
Total Drug Cost
67
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
570
Total Day Supply
16,270
Brand vs Generic
47% brand / 53% generic
Brand Drug Cost
$139K
Generic Drug Cost
$16K

Patient Demographics

Average Patient Age
66.8 years
Avg HCC Risk Score
1.67
Gender Split
58% female / 42% male
Age Distribution
<65: 24, 65-74: 25, 75-84: N/A, 85+: N/A

Top Prescribed Drugs (Medicare Part D)

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

What Sharon Rousseau, FNP prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Trulicity
Dulaglutide
44
Metformin Hcl Er
Metformin Hcl
18
Amlodipine Besylate
16
Mounjaro
Tirzepatide
16
Jardiance
Empagliflozin
14
Levothyroxine Sodium
11
Trazodone Hcl
11

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

Family Nurse Practitioner Overview

How Sharon Rousseau, FNP fits within the Family Nurse Practitioner landscape nationally.

209,817
Family Nurse Practitioner Providers in US
56
States with Family Nurse Practitioner
1,222
Avg Claims per Provider

Sharon Rousseau, FNP's 347 claims are below the specialty average of 1,222.

Nearby Family Nurse Practitioner Providers in Massachusetts

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

Compare Family Nurse Practitioner nationally: see state-by-state distribution →

Before you book an appointment

Use this federal record as your verification checklist, not as a recommendation.

  • Confirm the NPI record is current in the official CMS registry — providers update their own NPPES details, and moves can lag. Verify this NPI
  • Check the active license and any disciplinary history with the Massachusetts medical board — federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Family Nurse Practitioner peer on Medicare volume and prescribing patterns. Compare providers

Medicare Part D and MIPS figures describe practice patterns in federal programs only — they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.

Frequently Asked Questions

What is Sharon Rousseau, FNP's specialty?
Sharon Rousseau, FNP specializes in Family Nurse Practitioner and practices in Mashpee, Massachusetts. Credentials: FNP.
How much does Sharon Rousseau, FNP prescribe under Medicare Part D?
In 2023, Sharon Rousseau, FNP wrote 347 Medicare Part D claims totaling $159K in drug costs for 67 beneficiaries.
Where is Sharon Rousseau, FNP located?
Sharon Rousseau, FNP is located at 107 COMMERCIAL ST, Mashpee, MA, 02649. Phone: (508) 477-7090.
What is Sharon Rousseau, FNP's NPI number?
Sharon Rousseau, FNP's National Provider Identifier (NPI) is 1538105903, issued on 06/22/2006.
Does Sharon Rousseau, FNP prescribe more brand-name or generic drugs?
Sharon Rousseau, FNP's prescribing is 47% brand-name and 53% generic drugs by claim count, with $139K in brand drug costs.
How many Family Nurse Practitioner providers are there in the US?
There are 209,817 Family Nurse Practitioner providers across 56 states in the US. The average Family Nurse Practitioner provider writes 1,222 Medicare Part D claims per year.
What drugs does Sharon Rousseau, FNP prescribe most often?
Based on 2023 Medicare Part D data, Sharon Rousseau, FNP's most frequently prescribed drugs include Trulicity, Metformin Hcl Er, Amlodipine Besylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Sharon Rousseau, FNP accept Medicare?
Sharon Rousseau, FNP appears in CMS Medicare data with 347 Part D claims and 67 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Sharon Rousseau, FNP's credentials?
Sharon Rousseau, FNP's NPI is 1538105903 with credentials FNP. 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