2026 NPPES data Family Nurse Practitioner NPI 1508384942 FNP
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CYNTHIA ANTHONIES, FNP

Family Nurse Practitioner in CHESTERFIELD, Missouri. 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
229
Medicare Part D claims · 163 beneficiaries · Family Nurse Practitioner avg: 1K
MIPS score
89.2387/100
▲ 6 pts above national avg 83.1 · [object Object]
What the federal data reveals: CYNTHIA ANTHONIES, FNP is a Family Nurse Practitioner ([object Object]) practicing in CHESTERFIELD, Missouri with a Medicare Part D prescribing footprint of 229 claims across 163 beneficiaries . Their CMS MIPS Final Score of 89.2387/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities .

What stands out: CYNTHIA ANTHONIES, FNP reported a CMS MIPS final score of 89.2387 out of 100, above the 83.1 national average, and filed 229 Medicare Part D claims in 2023. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

CYNTHIA ANTHONIES, FNP at a glance

High performer (top quartile)

NPI registry status

Active

Issued 09/06/2017

NPI 1508384942

Primary specialty

Family Nurse Practitioner

High-volume

209,817 US NPIs in this specialty

Medicare Part D claims

229 81% vs specialty avg

2023 prescription claims

Specialty avg: 1,222

MIPS final score

89.2387/100 6.1387% pts

Exceptional band

vs 83.1 national avg

Specialty distribution in Missouri

How Family Nurse Practitioner compares to other specialties among Missouri providers

Missouri providers

Family Nurse Practitioner share within Missouri

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

Medicare quality performance — MIPS

CYNTHIA ANTHONIES, FNP's 2023 MIPS final score plotted against the Family Nurse Practitioner national average

High performer (top quartile)
MIPS Final Score
89.2387/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Family Nurse Practitioner) — 89.2387/100 vs national avg 83.1

0%100%National avg83%89.2%
MIPS final score (Family Nurse Practitioner) — 89.2387/100 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).

CYNTHIA ANTHONIES, FNP is a Family Nurse Practitioner provider practicing in CHESTERFIELD, Missouri, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: FNP. NPI: 1508384942. 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.

CYNTHIA ANTHONIES, FNP appears in the CMS NPPES registry as a Family Nurse Practitioner provider holding FNP credentials at 232 S WOODS MILL RD, CHESTERFIELD, MO, 63017, with a listed phone of (314) 205-6990. NPI 1508384942 was issued on 09/06/2017. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ANTHONIES 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 229 prescription claims written by this provider, covering 163 Medicare beneficiaries and totaling roughly $3K 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 89.2387/100 for the 2023 performance year (Quality 84.1405), compared with the national average of 83.1.

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

232 S WOODS MILL RD
CHESTERFIELD, MO 63017

Provider Details

NPI 1508384942
Specialty Family Nurse Practitioner
Credentials FNP
Gender Female
NPI Issued 09/06/2017

CMS Quality Score (MIPS)

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

89.2387
Final Score
Avg: 83.1
84.1405
Quality

Reporting: Alternative Payment Model

Hospital and facility affiliations

Facilities where CYNTHIA ANTHONIES, FNP 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.

EMERGENCY PHYSICIANS OF ST LUKES LLC
ELLISVILLE, MO

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

Medicare Part D Prescribing Data

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

229
Total Claims
$3K
Total Drug Cost
163
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
229
Total Day Supply
2,011
Generic Drug Cost
$2K
Antibiotic Claims
115

Patient Demographics

Average Patient Age
70.1 years
Avg HCC Risk Score
1.39
Gender Split
72% female / 28% male
Age Distribution
<65: 35, 65-74: 67, 75-84: 48, 85+: 13

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Amoxicillin-Clavulanate Potass
Amoxicillin/Potassium Clav
32
Prednisone
19
Nitrofurantoin Mono-Macro
Nitrofurantoin Monohyd/M-Cryst
18
Doxycycline Hyclate
17
Benzonatate
15
Sulfamethoxazole-Trimethoprim
Sulfamethoxazole/Trimethoprim
12

* 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 CYNTHIA ANTHONIES, FNP 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

CYNTHIA ANTHONIES, FNP's 229 claims are below the specialty average of 1,222.

Nearby Family Nurse Practitioner Providers in Missouri

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

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

Frequently Asked Questions

What is CYNTHIA ANTHONIES, FNP's specialty?
CYNTHIA ANTHONIES, FNP specializes in Family Nurse Practitioner and practices in CHESTERFIELD, Missouri. Credentials: FNP.
How much does CYNTHIA ANTHONIES, FNP prescribe under Medicare Part D?
In 2023, CYNTHIA ANTHONIES, FNP wrote 229 Medicare Part D claims totaling $3K in drug costs for 163 beneficiaries.
What is CYNTHIA ANTHONIES, FNP's Medicare quality score?
CYNTHIA ANTHONIES, FNP has a CMS MIPS Final Score of 89.2387/100 (Quality: 84.1405). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is CYNTHIA ANTHONIES, FNP located?
CYNTHIA ANTHONIES, FNP is located at 232 S WOODS MILL RD, CHESTERFIELD, MO, 63017. Phone: (314) 205-6990.
What is CYNTHIA ANTHONIES, FNP's NPI number?
CYNTHIA ANTHONIES, FNP's National Provider Identifier (NPI) is 1508384942, issued on 09/06/2017.
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 CYNTHIA ANTHONIES, FNP prescribe most often?
Based on 2023 Medicare Part D data, CYNTHIA ANTHONIES, FNP's most frequently prescribed drugs include Amoxicillin-Clavulanate Potass, Prednisone, Nitrofurantoin Mono-Macro. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does CYNTHIA ANTHONIES, FNP accept Medicare?
CYNTHIA ANTHONIES, FNP appears in CMS Medicare data with 229 Part D claims and 163 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify CYNTHIA ANTHONIES, FNP's credentials?
CYNTHIA ANTHONIES, FNP's NPI is 1508384942 with credentials FNP. 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