2026 NPPES data Women's Health Nurse Practitioner NPI 1538254438 ARNP
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Joanna Cox, ARNP

Women's Health Nurse Practitioner in Lexington, Kentucky. This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 9,452 in Women's Health Nurse Practitioner, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.

Federal data, no proprietary rating. We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
62
Medicare Part D claims · Women's Health Nurse Practitioner avg: 262
Generic prescribing
79%
generic claims · 21% brand-name · higher generic rates reduce patient out-of-pocket costs
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Joanna Cox, ARNP filed 62 Medicare Part D claims in 2023 as a Women's Health Nurse Practitioner in Lexington, Kentucky, prescribing 79% generic.

62
Part D claims, 2023
79%
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.

Joanna Cox, ARNP's Medicare Part D volume vs every U.S. prescriber

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

62 0th percentile higher than 0% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). This entry sits in this band. 200–400: 182,923 prescribers (13%). Above this entry. 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. 2K+: 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 Joanna Cox, ARNP?

Quality data not reported

NPI registry status

Active

Issued 10/04/2006

NPI 1538254438

Primary specialty

Women's Health Nurse Practitioner

Mid-sized

9,452 US NPIs in this specialty

Medicare Part D claims

62 76% vs specialty avg

2023 prescription claims

Specialty avg: 262

Specialty distribution in Kentucky

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

Kentucky providers

Largest specialties in Kentucky (% of in-state providers)

Family Nurse Practitioner - 5.9%Family Nurse Practitioner5.9%Student in an Organized Health Care Education/Training Program - 5.2%Student in an Organized Health Care Education/Training Program5.2%Pharmacist - 4.8%Pharmacist4.8%Mental Health Counselor - 4.6%Mental Health Counselor4.6%Clinical Social Worker - 4.1%Clinical Social Worker4.1%Physical Therapist - 3.7%Physical Therapist3.7%Women's Health Nurse Practitioner - 0.2%Women's Health Nurse Practitioner0.2%
Largest specialties in Kentucky (% of in-state providers)

Board certification

Not published by CMS

CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Women's Health Nurse Practitioner. Verify directly:

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).

Joanna Cox, ARNP appears in the CMS NPPES registry as a Women's Health Nurse Practitioner provider holding ARNP credentials at 1101 VETERANS DR, Lexington, KY, 40502, with a listed phone of (859) 233-4511. NPI 1538254438 was issued on 10/04/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Cox 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 62 prescription claims written by this provider, covering N/A Medicare beneficiaries and totaling roughly $10K in drug spend, split 21% brand-name and 79% 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

1101 VETERANS DR
Lexington, KY 40502

Provider Details

NPI 1538254438
Specialty Women's Health Nurse Practitioner
Credentials ARNP
Gender Female
NPI Issued 10/04/2006

Brand vs generic prescribing mix · Typical

Joanna Cox, ARNP - brand share 21.0%
Women's Health Nurse Practitioner average

21% brand-name claims vs 79% generic, on 62 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.

62
Total Claims
$10K
Total Drug Cost
N/A
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
150
Total Day Supply
4,435
Brand vs Generic
21% brand / 79% generic
Brand Drug Cost
$8K
Generic Drug Cost
$2K

Patient Demographics

Average Patient Age
71.0 years
Avg HCC Risk Score
0.43

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Ropinirole Hcl
12

* 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 Joanna Cox, ARNP 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

Joanna Cox, ARNP's 62 claims are below the specialty average of 262.

Nearby Women's Health Nurse Practitioner Providers in Kentucky

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

Compare Women's Health 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 Kentucky medical board, federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Women's Health 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 Joanna Cox, ARNP's specialty?
Joanna Cox, ARNP specializes in Women's Health Nurse Practitioner and practices in Lexington, Kentucky. Credentials: ARNP.
How much does Joanna Cox, ARNP prescribe under Medicare Part D?
In 2023, Joanna Cox, ARNP wrote 62 Medicare Part D claims totaling $10K in drug costs for N/A beneficiaries.
Where is Joanna Cox, ARNP located?
Joanna Cox, ARNP is located at 1101 VETERANS DR, Lexington, KY, 40502. Phone: (859) 233-4511.
What is Joanna Cox, ARNP's NPI number?
Joanna Cox, ARNP's National Provider Identifier (NPI) is 1538254438, issued on 10/04/2006.
Does Joanna Cox, ARNP prescribe more brand-name or generic drugs?
Joanna Cox, ARNP's prescribing is 21% brand-name and 79% generic drugs by claim count, with $8K 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 Joanna Cox, ARNP prescribe most often?
Based on 2023 Medicare Part D data, Joanna Cox, ARNP's most frequently prescribed drugs include Ropinirole Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Joanna Cox, ARNP accept Medicare?
Joanna Cox, ARNP appears in CMS Medicare data with 62 Part D claims and N/A Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Joanna Cox, ARNP's credentials?
Joanna Cox, ARNP's NPI is 1538254438 with credentials ARNP. 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

Compiled from official public sources by the PlainDoctor editorial team.