2026 NPPES data Adult Health Nurse Practitioner NPI 1659783264 APNP
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ALLISON FAHEY, APNP

Adult Health Nurse Practitioner in WAUKESHA, Wisconsin. 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
2K
Medicare Part D claims · 210 beneficiaries · Adult Health Nurse Practitioner avg: 1K
Generic prescribing
28%
generic claims · 72% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

ALLISON FAHEY, APNP filed 2,235 Medicare Part D claims in 2023 as a Adult Health Nurse Practitioner in WAUKESHA, Wisconsin, prescribing 28% generic.

2K
Part D claims, 2023
28%
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.

ALLISON FAHEY, APNP's Medicare Part D volume vs every U.S. prescriber

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

2,235 Top 15% higher than 85% 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%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). Below this entry. 1,600–1,800: 19,072 prescribers (1%). Below this entry. 1,800–2,000: 16,451 prescribers (1%). Below this entry. 2,000–2,200: 213,991 prescribers (16%). This entry sits in this band. 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 ALLISON FAHEY, APNP?

Quality data not reported

NPI registry status

Active

Issued 05/30/2014

NPI 1659783264

Primary specialty

Adult Health Nurse Practitioner

Mid-sized

29,492 US NPIs in this specialty

Medicare Part D claims

2,235 86% vs specialty avg

2023 prescription claims

Specialty avg: 1,201

Specialty distribution in Wisconsin

How Adult Health Nurse Practitioner compares to other specialties among Wisconsin providers

Wisconsin providers

Adult Health Nurse Practitioner share within Wisconsin

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

Specialty board-certification context

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

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

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

0%100%78%
Est. board-certified rate (Adult 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).

ALLISON FAHEY, APNP is a Adult Health Nurse Practitioner provider practicing in WAUKESHA, Wisconsin, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: APNP. NPI: 1659783264. 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.

ALLISON FAHEY, APNP appears in the CMS NPPES registry as a Adult Health Nurse Practitioner provider holding APNP credentials at 721 AMERICAN AVE, WAUKESHA, WI, 53188, with a listed phone of (262) 928-4695. NPI 1659783264 was issued on 05/30/2014. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what FAHEY 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 2,235 prescription claims written by this provider, covering 210 Medicare beneficiaries and totaling roughly $1.7 million in drug spend, split 72% brand-name and 28% 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.

Adult Health Nurse Practitioner is a mid-sized specialty nationwide, with 29,492 enrolled providers across 55 states and an average of 1,201 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

721 AMERICAN AVE
WAUKESHA, WI 53188

Provider Details

NPI 1659783264
Specialty Adult Health Nurse Practitioner
Credentials APNP
Gender Female
NPI Issued 05/30/2014

Hospital and facility affiliations

Facilities where ALLISON FAHEY, APNP 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.

PROHEALTH MEDICAL GROUP INC
OCONOMOWOC, WI

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 · Brand-heavy

ALLISON FAHEY, APNP — brand share 72.0%
Specialty average (est.)

72% brand-name claims vs 28% generic, on 2,235 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.

2,235
Total Claims
$1.7M
Total Drug Cost
210
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
3,965
Total Day Supply
115,547
Brand vs Generic
72% brand / 28% generic
Brand Drug Cost
$1.7M
Generic Drug Cost
$8K

Patient Demographics

Average Patient Age
70.6 years
Avg HCC Risk Score
1.82
Gender Split
47% female / 53% male
Age Distribution
<65: 33, 65-74: 118, 75-84: 47, 85+: 12

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Ozempic
Semaglutide
269
Jardiance
Empagliflozin
196
Metformin Hcl Er
Metformin Hcl
196
Tresiba Flextouch U-200
Insulin Degludec
115
Novolog Flexpen
Insulin Aspart
95
Trulicity
Dulaglutide
86
Humalog Kwikpen U-100
Insulin Lispro
85
Glipizide Er
Glipizide
73
Metformin Hcl
72
Novolog
Insulin Aspart
42

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

Adult Health Nurse Practitioner Overview

How ALLISON FAHEY, APNP fits within the Adult Health Nurse Practitioner landscape nationally.

29,492
Adult Health Nurse Practitioner Providers in US
55
States with Adult Health Nurse Practitioner
1,201
Avg Claims per Provider

ALLISON FAHEY, APNP's 2,235 claims are above the specialty average of 1,201.

Nearby Adult Health Nurse Practitioner Providers in Wisconsin

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

Compare Adult Health Nurse Practitioner nationally: see state-by-state distribution →

Frequently Asked Questions

What is ALLISON FAHEY, APNP's specialty?
ALLISON FAHEY, APNP specializes in Adult Health Nurse Practitioner and practices in WAUKESHA, Wisconsin. Credentials: APNP.
How much does ALLISON FAHEY, APNP prescribe under Medicare Part D?
In 2023, ALLISON FAHEY, APNP wrote 2,235 Medicare Part D claims totaling $1.7M in drug costs for 210 beneficiaries.
Where is ALLISON FAHEY, APNP located?
ALLISON FAHEY, APNP is located at 721 AMERICAN AVE, WAUKESHA, WI, 53188. Phone: (262) 928-4695.
What is ALLISON FAHEY, APNP's NPI number?
ALLISON FAHEY, APNP's National Provider Identifier (NPI) is 1659783264, issued on 05/30/2014.
Does ALLISON FAHEY, APNP prescribe more brand-name or generic drugs?
ALLISON FAHEY, APNP's prescribing is 72% brand-name and 28% generic drugs by claim count, with $1.7M in brand drug costs.
How many Adult Health Nurse Practitioner providers are there in the US?
There are 29,492 Adult Health Nurse Practitioner providers across 55 states in the US. The average Adult Health Nurse Practitioner provider writes 1,201 Medicare Part D claims per year.
What drugs does ALLISON FAHEY, APNP prescribe most often?
Based on 2023 Medicare Part D data, ALLISON FAHEY, APNP's most frequently prescribed drugs include Ozempic, Jardiance, Metformin Hcl Er. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ALLISON FAHEY, APNP accept Medicare?
ALLISON FAHEY, APNP appears in CMS Medicare data with 2,235 Part D claims and 210 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ALLISON FAHEY, APNP's credentials?
ALLISON FAHEY, APNP's NPI is 1659783264 with credentials APNP. 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