2026 NPPES data Women's Health Nurse Practitioner NPI 1386948990 RN, WHNP
Verify on CMS →

MARGARET HANSLEY, RN, WHNP

Women's Health Nurse Practitioner in WEST HAVEN, Connecticut. 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
492
Medicare Part D claims · 25 beneficiaries · Women's Health Nurse Practitioner avg: 262
Generic prescribing
85%
generic claims · 15% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

MARGARET HANSLEY, RN, WHNP filed 492 Medicare Part D claims in 2023 as a Women's Health Nurse Practitioner in WEST HAVEN, Connecticut, prescribing 85% generic.

492
Part D claims, 2023
85%
generic prescribing

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.

MARGARET HANSLEY, RN, WHNP's Medicare Part D volume vs every U.S. prescriber

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

492 Top 38% higher than 62% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). This entry sits in this band. 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 MARGARET HANSLEY, RN, WHNP?

Quality data not reported

NPI registry status

Active

Issued 12/23/2010

NPI 1386948990

Primary specialty

Women's Health Nurse Practitioner

Mid-sized

9,452 US NPIs in this specialty

Medicare Part D claims

492 88% vs specialty avg

2023 prescription claims

Specialty avg: 262

Specialty distribution in Connecticut

How Women's Health Nurse Practitioner compares to other specialties among Connecticut providers

Connecticut providers

Women's Health Nurse Practitioner share within Connecticut

1. Women's Health Nurse Practitioner42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Women's Health Nurse Practitioner share within Connecticut

Specialty board-certification context

Estimated specialty board-certified rate — Women's Health Nurse Practitioner (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Women's Health Nurse Practitioner ABMS/AOA estimate

Est. board-certified rate (Women's Health Nurse Practitioner) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Women's Health 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).

MARGARET HANSLEY, RN, WHNP appears in the CMS NPPES registry as a Women's Health Nurse Practitioner provider holding RN, WHNP credentials at 687 CAMPBELL AVE, WEST HAVEN, CT, 06516, with a listed phone of (203) 932-6481. NPI 1386948990 was issued on 12/23/2010. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what HANSLEY 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 492 prescription claims written by this provider, covering 25 Medicare beneficiaries and totaling roughly $28K in drug spend, split 15% brand-name and 85% 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.

Women's Health Nurse Practitioner is a mid-sized specialty nationwide, with 9,452 enrolled providers across 55 states and an average of 262 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

687 CAMPBELL AVE
WEST HAVEN, CT 06516

Provider Details

NPI 1386948990
Specialty Women's Health Nurse Practitioner
Credentials RN, WHNP
Gender Female
NPI Issued 12/23/2010

Brand vs generic prescribing mix · Typical

MARGARET HANSLEY, RN, WHNP — brand share 15.0%
Specialty average (est.)

15% brand-name claims vs 85% generic, on 492 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.

492
Total Claims
$28K
Total Drug Cost
25
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
492
Total Day Supply
13,191
Brand vs Generic
15% brand / 85% generic
Brand Drug Cost
$17K
Generic Drug Cost
$11K

Patient Demographics

Average Patient Age
84.0 years
Avg HCC Risk Score
2.05
Gender Split
52% female / 48% male

Top Prescribed Drugs (Medicare Part D)

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

What MARGARET HANSLEY, RN, WHNP 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
Simvastatin
44
Eliquis
Apixaban
41
Atorvastatin Calcium
40
Amlodipine Besylate
35
Tamsulosin Hcl
29
Memantine Hcl
27
Levothyroxine Sodium
26
Gabapentin
25
Carbamazepine Er
Carbamazepine
23
Lisinopril
23

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

Women's Health Nurse Practitioner Overview

How MARGARET HANSLEY, RN, WHNP fits within the Women's Health Nurse Practitioner landscape nationally.

9,452
Women's Health Nurse Practitioner Providers in US
55
States with Women's Health Nurse Practitioner
262
Avg Claims per Provider

MARGARET HANSLEY, RN, WHNP's 492 claims are above the specialty average of 262.

Nearby Women's Health Nurse Practitioner Providers in Connecticut

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

Compare Women's Health Nurse Practitioner nationally: see state-by-state distribution →

Frequently Asked Questions

What is MARGARET HANSLEY, RN, WHNP's specialty?
MARGARET HANSLEY, RN, WHNP specializes in Women's Health Nurse Practitioner and practices in WEST HAVEN, Connecticut. Credentials: RN, WHNP.
How much does MARGARET HANSLEY, RN, WHNP prescribe under Medicare Part D?
In 2023, MARGARET HANSLEY, RN, WHNP wrote 492 Medicare Part D claims totaling $28K in drug costs for 25 beneficiaries.
Where is MARGARET HANSLEY, RN, WHNP located?
MARGARET HANSLEY, RN, WHNP is located at 687 CAMPBELL AVE, WEST HAVEN, CT, 06516. Phone: (203) 932-6481.
What is MARGARET HANSLEY, RN, WHNP's NPI number?
MARGARET HANSLEY, RN, WHNP's National Provider Identifier (NPI) is 1386948990, issued on 12/23/2010.
Does MARGARET HANSLEY, RN, WHNP prescribe more brand-name or generic drugs?
MARGARET HANSLEY, RN, WHNP's prescribing is 15% brand-name and 85% generic drugs by claim count, with $17K in brand drug costs.
How many Women's Health Nurse Practitioner providers are there in the US?
There are 9,452 Women's Health Nurse Practitioner providers across 55 states in the US. The average Women's Health Nurse Practitioner provider writes 262 Medicare Part D claims per year.
What drugs does MARGARET HANSLEY, RN, WHNP prescribe most often?
Based on 2023 Medicare Part D data, MARGARET HANSLEY, RN, WHNP's most frequently prescribed drugs include Simvastatin, Eliquis, Atorvastatin Calcium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does MARGARET HANSLEY, RN, WHNP accept Medicare?
MARGARET HANSLEY, RN, WHNP appears in CMS Medicare data with 492 Part D claims and 25 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify MARGARET HANSLEY, RN, WHNP's credentials?
MARGARET HANSLEY, RN, WHNP's NPI is 1386948990 with credentials RN, WHNP. 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