2026 NPPES data Clinical Nurse Specialist NPI 1649267436 C.N.S.
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TRACEY WALKER, C.N.S.

Clinical Nurse Specialist in OKLAHOMA CITY, Oklahoma. 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
51
Medicare Part D claims · 14 beneficiaries · Clinical Nurse Specialist avg: 953
MIPS score
99.15/100
▲ 16 pts above national avg 83.1 · [object Object]
Industry payments
$256.4
14 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: TRACEY WALKER, C.N.S. is a Clinical Nurse Specialist ([object Object]) practicing in OKLAHOMA CITY, Oklahoma with a Medicare Part D prescribing footprint of 51 claims across 14 beneficiaries . Their CMS MIPS Final Score of 99.15/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities . Industry payments of $256.4 across 14 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: TRACEY WALKER, C.N.S. reported a CMS MIPS final score of 99.15 out of 100, above the 83.1 national average, and filed 51 Medicare Part D claims in 2023. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

TRACEY WALKER, C.N.S. at a glance

High performer (top quartile)

NPI registry status

Active

Issued 10/05/2005

NPI 1649267436

Primary specialty

Clinical Nurse Specialist

Niche

1,708 US NPIs in this specialty

Medicare Part D claims

51 95% vs specialty avg

2023 prescription claims

Specialty avg: 953

MIPS final score

99.15/100 16.05000000000001% pts

Exceptional band

vs 83.1 national avg

Specialty distribution in Oklahoma

How Clinical Nurse Specialist compares to other specialties among Oklahoma providers

Oklahoma providers

Clinical Nurse Specialist share within Oklahoma

1. Clinical Nurse Specialist42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Clinical Nurse Specialist share within Oklahoma

Medicare quality performance — MIPS

TRACEY WALKER, C.N.S.'s 2023 MIPS final score plotted against the Clinical Nurse Specialist national average

High performer (top quartile)
MIPS Final Score
99.15/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Clinical Nurse Specialist) — 99.15/100 vs national avg 83.1

0%100%National avg83%99%
MIPS final score (Clinical Nurse Specialist) — 99.15/100 vs national avg 83.1

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).

TRACEY WALKER, C.N.S. is a Clinical Nurse Specialist provider practicing in OKLAHOMA CITY, Oklahoma, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: C.N.S.. NPI: 1649267436. 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.

TRACEY WALKER, C.N.S. appears in the CMS NPPES registry as a Clinical Nurse Specialist provider holding C.N.S. credentials at 5224 E I 240 SERVICE RD STE 201, OKLAHOMA CITY, OK, 73135, with a listed phone of (405) 608-3800. NPI 1649267436 was issued on 10/05/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what WALKER 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 51 prescription claims written by this provider, covering 14 Medicare beneficiaries and totaling roughly $535 in drug spend. 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. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 99.15/100 for the 2023 performance year, compared with the national average of 83.1.

Clinical Nurse Specialist is a narrow specialty nationwide, with 1,708 enrolled providers across 49 states and an average of 953 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

5224 E I 240 SERVICE RD STE 201
OKLAHOMA CITY, OK 73135

Provider Details

NPI 1649267436
Specialty Clinical Nurse Specialist
Credentials C.N.S.
Gender Female
NPI Issued 10/05/2005

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

99.15
Final Score
Avg: 83.1
99
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where TRACEY WALKER, C.N.S. 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.

NORMAN REGIONAL PROVIDERS SPECIALTY CARE
NORMAN, OK

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

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 TRACEY WALKER, C.N.S.. Source: openpaymentsdata.cms.gov.

Total received

$256

Largest payer

Novo Nordisk 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.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

51
Total Claims
$535
Total Drug Cost
14
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
57
Total Day Supply
1,618
Generic Drug Cost
$386

Patient Demographics

Average Patient Age
71.4 years
Avg HCC Risk Score
1.10

Clinical Nurse Specialist Overview

How TRACEY WALKER, C.N.S. fits within the Clinical Nurse Specialist landscape nationally.

1,708
Clinical Nurse Specialist Providers in US
49
States with Clinical Nurse Specialist
953
Avg Claims per Provider

TRACEY WALKER, C.N.S.'s 51 claims are below the specialty average of 953.

Nearby Clinical Nurse Specialist Providers in Oklahoma

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

Compare Clinical Nurse Specialist nationally: see state-by-state distribution →

Frequently Asked Questions

What is TRACEY WALKER, C.N.S.'s specialty?
TRACEY WALKER, C.N.S. specializes in Clinical Nurse Specialist and practices in OKLAHOMA CITY, Oklahoma. Credentials: C.N.S..
How much does TRACEY WALKER, C.N.S. prescribe under Medicare Part D?
In 2023, TRACEY WALKER, C.N.S. wrote 51 Medicare Part D claims totaling $535 in drug costs for 14 beneficiaries.
What is TRACEY WALKER, C.N.S.'s Medicare quality score?
TRACEY WALKER, C.N.S. has a CMS MIPS Final Score of 99.15/100. The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is TRACEY WALKER, C.N.S. located?
TRACEY WALKER, C.N.S. is located at 5224 E I 240 SERVICE RD STE 201, OKLAHOMA CITY, OK, 73135. Phone: (405) 608-3800.
What is TRACEY WALKER, C.N.S.'s NPI number?
TRACEY WALKER, C.N.S.'s National Provider Identifier (NPI) is 1649267436, issued on 10/05/2005.
How many Clinical Nurse Specialist providers are there in the US?
There are 1,708 Clinical Nurse Specialist providers across 49 states in the US. The average Clinical Nurse Specialist provider writes 953 Medicare Part D claims per year.
Does TRACEY WALKER, C.N.S. accept Medicare?
TRACEY WALKER, C.N.S. appears in CMS Medicare data with 51 Part D claims and 14 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify TRACEY WALKER, C.N.S.'s credentials?
TRACEY WALKER, C.N.S.'s NPI is 1649267436 with credentials C.N.S.. 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.
Quality Performance
CMS Merit-based Incentive Payment System (MIPS) — 2023 performance year.
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