2026 NPPES data Family Nurse Practitioner NPI 1811565757 NP
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ALYSE CHASE, NP

Family Nurse Practitioner in WESTPORT, 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
853
Medicare Part D claims · 234 beneficiaries · Family Nurse Practitioner avg: 1K
Generic prescribing
94%
generic claims · 6% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

ALYSE CHASE, NP filed 853 Medicare Part D claims in 2023 as a Family Nurse Practitioner in WESTPORT, Connecticut, prescribing 94% generic.

853
Part D claims, 2023
94%
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.

ALYSE CHASE, NP's Medicare Part D volume vs every U.S. prescriber

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

853 Top 27% higher than 73% 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%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). This entry sits in this band. 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 ALYSE CHASE, NP?

Quality data not reported

NPI registry status

Active

Issued 06/16/2021

NPI 1811565757

Primary specialty

Family Nurse Practitioner

High-volume

209,817 US NPIs in this specialty

Medicare Part D claims

853 30% vs specialty avg

2023 prescription claims

Specialty avg: 1,222

Specialty distribution in Connecticut

How Family Nurse Practitioner compares to other specialties among Connecticut providers

Connecticut providers

Family Nurse Practitioner share within Connecticut

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

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).

ALYSE CHASE, NP appears in the CMS NPPES registry as a Family Nurse Practitioner provider holding NP credentials at 20 ELM ST, WESTPORT, CT, 06880, with a listed phone of (888) 663-6331. NPI 1811565757 was issued on 06/16/2021. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what CHASE 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 853 prescription claims written by this provider, covering 234 Medicare beneficiaries and totaling roughly $38K in drug spend, split 6% brand-name and 94% 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

20 ELM ST
WESTPORT, CT 06880

Provider Details

NPI 1811565757
Specialty Family Nurse Practitioner
Credentials NP
Gender Female
NPI Issued 06/16/2021

Hospital and facility affiliations

Facilities where ALYSE CHASE, NP 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.

HHC ONE MEDICAL, LLC
DARIEN, CT

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Brand vs generic prescribing mix · Generic-heavy

ALYSE CHASE, NP — brand share 6.0%
Specialty average (est.)

6% brand-name claims vs 94% generic, on 853 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.

853
Total Claims
$38K
Total Drug Cost
234
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,822
Total Day Supply
52,572
Brand vs Generic
6% brand / 94% generic
Brand Drug Cost
$21K
Generic Drug Cost
$17K
Antibiotic Claims
47

Patient Demographics

Average Patient Age
76.8 years
Avg HCC Risk Score
1.49
Gender Split
59% female / 41% male

Top Prescribed Drugs (Medicare Part D)

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

What ALYSE CHASE, NP 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
Rosuvastatin Calcium
69
Levothyroxine Sodium
65
Warfarin Sodium
56
Amlodipine Besylate
43
Fluticasone Propionate
32
Metoprolol Succinate
32
Atorvastatin Calcium
31
Losartan Potassium
26
Hydrochlorothiazide
23
Lisinopril
23

* 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 ALYSE CHASE, NP 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

ALYSE CHASE, NP's 853 claims are below the specialty average of 1,222.

Nearby Family Nurse Practitioner Providers in Connecticut

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

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

Frequently Asked Questions

What is ALYSE CHASE, NP's specialty?
ALYSE CHASE, NP specializes in Family Nurse Practitioner and practices in WESTPORT, Connecticut. Credentials: NP.
How much does ALYSE CHASE, NP prescribe under Medicare Part D?
In 2023, ALYSE CHASE, NP wrote 853 Medicare Part D claims totaling $38K in drug costs for 234 beneficiaries.
Where is ALYSE CHASE, NP located?
ALYSE CHASE, NP is located at 20 ELM ST, WESTPORT, CT, 06880. Phone: (888) 663-6331.
What is ALYSE CHASE, NP's NPI number?
ALYSE CHASE, NP's National Provider Identifier (NPI) is 1811565757, issued on 06/16/2021.
Does ALYSE CHASE, NP prescribe more brand-name or generic drugs?
ALYSE CHASE, NP's prescribing is 6% brand-name and 94% generic drugs by claim count, with $21K 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 ALYSE CHASE, NP prescribe most often?
Based on 2023 Medicare Part D data, ALYSE CHASE, NP's most frequently prescribed drugs include Rosuvastatin Calcium, Levothyroxine Sodium, Warfarin Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ALYSE CHASE, NP accept Medicare?
ALYSE CHASE, NP appears in CMS Medicare data with 853 Part D claims and 234 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ALYSE CHASE, NP's credentials?
ALYSE CHASE, NP's NPI is 1811565757 with credentials NP. 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