2026 NPPES data Physician Assistant NPI 1558002998 PA
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DENA DIMACHKIE, PA

Physician Assistant in COLUMBIA, 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
587
Medicare Part D claims · 157 beneficiaries · Physician Assistant avg: 790
Generic prescribing
84%
generic claims · 16% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
100/100
▲ 17 pts above national avg 83.1 · [object Object]

What the federal data shows

DENA DIMACHKIE, PA reported a CMS MIPS final score of 100/100 — above the 83.1 national average — and filed 587 Medicare Part D claims in 2023.

100/100
MIPS score · +17 vs avg
587
Part D claims, 2023
84%
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.

DENA DIMACHKIE, PA's MIPS score vs every scored U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023 — the federal quality measure

100 Top 7% higher than 93% of 477,587 scored providers

0–10: 8,684 scored providers (2%). Below this entry. 10–20: 3,008 scored providers (1%). Below this entry. 20–30: 3,069 scored providers (1%). Below this entry. 30–40: 2,746 scored providers (1%). Below this entry. 40–50: 2,928 scored providers (1%). Below this entry. 50–60: 5,882 scored providers (1%). Below this entry. 60–70: 13,906 scored providers (3%). Below this entry. 70–80: 118,074 scored providers (25%). Below this entry. 80–90: 129,887 scored providers (27%). Below this entry. 90–100: 189,403 scored providers (40%). This entry sits in this band. This provider 0 100 every MIPS-scored clinician, bucketed by value

Each bar is a band; taller bars hold more scored providers. 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 Merit-based Incentive Payment System (MIPS) · 2023

What does the federal data show about DENA DIMACHKIE, PA?

High performer (top quartile)

NPI registry status

Active

Issued 04/06/2022

NPI 1558002998

Primary specialty

Physician Assistant

High-volume

149,975 US NPIs in this specialty

Medicare Part D claims

587 26% vs specialty avg

2023 prescription claims

Specialty avg: 790

MIPS final score

100/100 16.900000000000006% pts

Exceptional band

vs 83.1 national avg

Specialty distribution in Missouri

How Physician Assistant compares to other specialties among Missouri providers

Missouri providers

Physician Assistant share within Missouri

1. Physician Assistant42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Physician Assistant share within Missouri

Medicare quality performance — MIPS

DENA DIMACHKIE, PA's 2023 MIPS final score plotted against the Physician Assistant national average

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

MIPS final score (Physician Assistant) — 100/100 vs national avg 83.1

0%100%National avg83%99%
MIPS final score (Physician Assistant) — 100/100 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).

DENA DIMACHKIE, PA is a Physician Assistant provider practicing in COLUMBIA, Missouri, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: PA. NPI: 1558002998. 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.

DENA DIMACHKIE, PA appears in the CMS NPPES registry as a Physician Assistant provider holding PA credentials at 7115 E SAINT CHARLES RD, COLUMBIA, MO, 65202, with a listed phone of (573) 884-6851. NPI 1558002998 was issued on 04/06/2022. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what DIMACHKIE 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 587 prescription claims written by this provider, covering 157 Medicare beneficiaries and totaling roughly $60K in drug spend, split 16% brand-name and 84% 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. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 100/100 for the 2023 performance year, compared with the national average of 83.1.

Physician Assistant is a high-volume specialty nationwide, with 149,975 enrolled providers across 56 states and an average of 790 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

7115 E SAINT CHARLES RD
COLUMBIA, MO 65202

Provider Details

NPI 1558002998
Specialty Physician Assistant
Credentials PA
Gender Female
NPI Issued 04/06/2022

CMS Quality Score (MIPS)

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

100
Final Score
Avg: 83.1
100
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where DENA DIMACHKIE, PA 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.

THE CURATORS OF THE UNIVERSITY OF MISSOURI
COLUMBIA, 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).

Brand vs generic prescribing mix · Typical

DENA DIMACHKIE, PA — brand share 16.0%
Specialty average (est.)

16% brand-name claims vs 84% generic, on 587 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.

587
Total Claims
$60K
Total Drug Cost
157
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
944
Total Day Supply
23,420
Brand vs Generic
16% brand / 84% generic
Brand Drug Cost
$50K
Generic Drug Cost
$9K
Antibiotic Claims
94

Patient Demographics

Average Patient Age
67.8 years
Avg HCC Risk Score
1.14
Gender Split
64% female / 36% male
Age Distribution
<65: 38, 65-74: 72, 75-84: 34, 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
31
Losartan Potassium
26
Albuterol Sulfate Hfa
Albuterol Sulfate
20
Doxycycline Hyclate
18
Fluticasone Propionate
18
Baclofen
15
Fluconazole
13
Prednisone
13
Atorvastatin Calcium
12
Lisinopril
12

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

Physician Assistant Overview

How DENA DIMACHKIE, PA fits within the Physician Assistant landscape nationally.

149,975
Physician Assistant Providers in US
56
States with Physician Assistant
790
Avg Claims per Provider

DENA DIMACHKIE, PA's 587 claims are below the specialty average of 790.

Nearby Physician Assistant Providers in Missouri

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

Compare Physician Assistant nationally: see state-by-state distribution →

Frequently Asked Questions

What is DENA DIMACHKIE, PA's specialty?
DENA DIMACHKIE, PA specializes in Physician Assistant and practices in COLUMBIA, Missouri. Credentials: PA.
How much does DENA DIMACHKIE, PA prescribe under Medicare Part D?
In 2023, DENA DIMACHKIE, PA wrote 587 Medicare Part D claims totaling $60K in drug costs for 157 beneficiaries.
What is DENA DIMACHKIE, PA's Medicare quality score?
DENA DIMACHKIE, PA has a CMS MIPS Final Score of 100/100. The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is DENA DIMACHKIE, PA located?
DENA DIMACHKIE, PA is located at 7115 E SAINT CHARLES RD, COLUMBIA, MO, 65202. Phone: (573) 884-6851.
What is DENA DIMACHKIE, PA's NPI number?
DENA DIMACHKIE, PA's National Provider Identifier (NPI) is 1558002998, issued on 04/06/2022.
Does DENA DIMACHKIE, PA prescribe more brand-name or generic drugs?
DENA DIMACHKIE, PA's prescribing is 16% brand-name and 84% generic drugs by claim count, with $50K in brand drug costs.
How many Physician Assistant providers are there in the US?
There are 149,975 Physician Assistant providers across 56 states in the US. The average Physician Assistant provider writes 790 Medicare Part D claims per year.
What drugs does DENA DIMACHKIE, PA prescribe most often?
Based on 2023 Medicare Part D data, DENA DIMACHKIE, PA's most frequently prescribed drugs include Amoxicillin-Clavulanate Potass, Losartan Potassium, Albuterol Sulfate Hfa. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does DENA DIMACHKIE, PA accept Medicare?
DENA DIMACHKIE, PA appears in CMS Medicare data with 587 Part D claims and 157 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify DENA DIMACHKIE, PA's credentials?
DENA DIMACHKIE, PA's NPI is 1558002998 with credentials PA. 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