2026 NPPES data Gerontology Nurse Practitioner NPI 1518336080
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CHARLENE WALTON WINDHAM

Gerontology Nurse Practitioner in SOUTHFIELD, Michigan. 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
10K
Medicare Part D claims · 368 beneficiaries · Gerontology Nurse Practitioner avg: 1K
Generic prescribing
87%
generic claims · 13% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$352.35
4 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

CHARLENE WALTON WINDHAM filed 9,743 Medicare Part D claims in 2023 as a Gerontology Nurse Practitioner in SOUTHFIELD, Michigan, prescribing 87% generic.

10K
Part D claims, 2023
87%
generic prescribing
$352.35
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.

CHARLENE WALTON WINDHAM's Medicare Part D volume vs every U.S. prescriber

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

9,743 Top 2% higher than 98% 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 CHARLENE WALTON WINDHAM?

Quality data not reported

NPI registry status

Active

Issued 09/15/2015

NPI 1518336080

Primary specialty

Gerontology Nurse Practitioner

Mid-sized

9,625 US NPIs in this specialty

Medicare Part D claims

9,743 659% vs specialty avg

2023 prescription claims

Specialty avg: 1,283

Specialty distribution in Michigan

How Gerontology Nurse Practitioner compares to other specialties among Michigan providers

Michigan providers

Gerontology Nurse Practitioner share within Michigan

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

Specialty board-certification context

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

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

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

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

CHARLENE WALTON WINDHAM appears in the CMS NPPES registry as a Gerontology Nurse Practitioner provider at 17515 W 9 MILE RD, SOUTHFIELD, MI, 48075, with a listed phone of (248) 559-0950. NPI 1518336080 was issued on 09/15/2015. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what WALTON WINDHAM 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 9,743 prescription claims written by this provider, covering 368 Medicare beneficiaries and totaling roughly $1.0 million in drug spend, split 13% brand-name and 87% generic by claim count, with an opioid prescribing rate of 0.9%. 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.

Gerontology Nurse Practitioner is a mid-sized specialty nationwide, with 9,625 enrolled providers across 54 states and an average of 1,283 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

17515 W 9 MILE RD
SOUTHFIELD, MI 48075

Provider Details

NPI 1518336080
Specialty Gerontology Nurse Practitioner
Gender Female
NPI Issued 09/15/2015

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 CHARLENE WALTON WINDHAM. Source: openpaymentsdata.cms.gov.

Total received

$352

Largest payer

Otsuka America Pharmaceutical, Inc.

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 — Michigan MI-BOM 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 ~41K Michigan medical licensees in 2023 — they are NOT specific to CHARLENE WALTON WINDHAM. To verify CHARLENE WALTON WINDHAM's current license status, search the MI-BOM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

123
Total board actions, Michigan 2023
Across 120 cases
3.00
Actions per 1,000 licensees
Michigan statewide rate
probation
Most common action type
44 cases

MI-BOM 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 Michigan disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Typical

CHARLENE WALTON WINDHAM — brand share 13.0%
Specialty average (est.)

13% brand-name claims vs 87% generic, on 9,743 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.

9,743
Total Claims
$1.0M
Total Drug Cost
368
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
9,791
Total Day Supply
265,228
Brand vs Generic
13% brand / 87% generic
Brand Drug Cost
$638K
Generic Drug Cost
$396K
Opioid Claims
83 (0.9% rate)
Antibiotic Claims
107

Patient Demographics

Average Patient Age
75.9 years
Avg HCC Risk Score
3.24
Gender Split
67% female / 33% male
Age Distribution
<65: 32, 65-74: 144, 75-84: 118, 85+: 74

Top Prescribed Drugs (Medicare Part D)

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

What CHARLENE WALTON WINDHAM 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
Atorvastatin Calcium
840
Amlodipine Besylate
423
Lisinopril
299
Losartan Potassium
236
Omeprazole
223
Eliquis
Apixaban
203
Gabapentin
203
Levothyroxine Sodium
203
Furosemide
201
Metoprolol Tartrate
198

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

Gerontology Nurse Practitioner Overview

How CHARLENE WALTON WINDHAM fits within the Gerontology Nurse Practitioner landscape nationally.

9,625
Gerontology Nurse Practitioner Providers in US
54
States with Gerontology Nurse Practitioner
1,283
Avg Claims per Provider

CHARLENE WALTON WINDHAM's 9,743 claims are above the specialty average of 1,283.

Nearby Gerontology Nurse Practitioner Providers in Michigan

Other clinicians with the same primary specialty enrolled in Michigan, drawn from the same CMS NPPES roster as WALTON WINDHAM.

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

Frequently Asked Questions

What is CHARLENE WALTON WINDHAM's specialty?
CHARLENE WALTON WINDHAM specializes in Gerontology Nurse Practitioner and practices in SOUTHFIELD, Michigan.
How much does CHARLENE WALTON WINDHAM prescribe under Medicare Part D?
In 2023, CHARLENE WALTON WINDHAM wrote 9,743 Medicare Part D claims totaling $1.0M in drug costs for 368 beneficiaries.
Where is CHARLENE WALTON WINDHAM located?
CHARLENE WALTON WINDHAM is located at 17515 W 9 MILE RD, SOUTHFIELD, MI, 48075. Phone: (248) 559-0950.
What is CHARLENE WALTON WINDHAM's NPI number?
CHARLENE WALTON WINDHAM's National Provider Identifier (NPI) is 1518336080, issued on 09/15/2015.
Does CHARLENE WALTON WINDHAM prescribe more brand-name or generic drugs?
CHARLENE WALTON WINDHAM's prescribing is 13% brand-name and 87% generic drugs by claim count, with $638K in brand drug costs.
Does CHARLENE WALTON WINDHAM prescribe opioids?
Yes, CHARLENE WALTON WINDHAM had 83 opioid claims in 2023 with an opioid prescribing rate of 0.9%.
How many Gerontology Nurse Practitioner providers are there in the US?
There are 9,625 Gerontology Nurse Practitioner providers across 54 states in the US. The average Gerontology Nurse Practitioner provider writes 1,283 Medicare Part D claims per year.
What drugs does CHARLENE WALTON WINDHAM prescribe most often?
Based on 2023 Medicare Part D data, CHARLENE WALTON WINDHAM's most frequently prescribed drugs include Atorvastatin Calcium, Amlodipine Besylate, Lisinopril. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does CHARLENE WALTON WINDHAM accept Medicare?
CHARLENE WALTON WINDHAM appears in CMS Medicare data with 9,743 Part D claims and 368 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify CHARLENE WALTON WINDHAM's credentials?
CHARLENE WALTON WINDHAM's NPI is 1518336080. 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