2026 NPPES data Physician Assistant NPI 1073739314 PA
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DON MILLIRON, PA

Physician Assistant in MIDLOTHIAN, Virginia. 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
525
Medicare Part D claims · 171 beneficiaries · Physician Assistant avg: 790
Generic prescribing
95%
generic claims · 5% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
62.1316/100
▼ 21 pts below national avg 83.1 · [object Object]

What the federal data shows

DON MILLIRON, PA reported a CMS MIPS final score of 62.1316/100 — below the 83.1 national average — and filed 525 Medicare Part D claims in 2023.

62.1316/100
MIPS score · -21 vs avg
525
Part D claims, 2023
95%
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.

DON MILLIRON, PA's MIPS score vs every scored U.S. clinician

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

62 6th percentile higher than 6% 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%). This entry sits in this band. 70–80: 118,074 scored providers (25%). Above this entry. 80–90: 129,887 scored providers (27%). Above this entry. 90–100: 189,403 scored providers (40%). Above this entry. 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 DON MILLIRON, PA?

Below national average

NPI registry status

Active

Issued 04/17/2007

NPI 1073739314

Primary specialty

Physician Assistant

High-volume

149,975 US NPIs in this specialty

Medicare Part D claims

525 34% vs specialty avg

2023 prescription claims

Specialty avg: 790

MIPS final score

62.1316/100 20.968399999999995% pts

Mid-tier band

vs 83.1 national avg

Specialty distribution in Virginia

How Physician Assistant compares to other specialties among Virginia providers

Virginia providers

Physician Assistant share within Virginia

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

Medicare quality performance — MIPS

DON MILLIRON, PA's 2023 MIPS final score plotted against the Physician Assistant national average

Below national average
MIPS Final Score
62.1316/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Physician Assistant) — 62.1316/100 vs national avg 83.1

0%100%National avg83%62.1%
MIPS final score (Physician Assistant) — 62.1316/100 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).

DON MILLIRON, PA appears in the CMS NPPES registry as a Physician Assistant provider holding PA credentials at 11020 HULL STREET RD, MIDLOTHIAN, VA, 23112, with a listed phone of (804) 744-6310. NPI 1073739314 was issued on 04/17/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what MILLIRON 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 525 prescription claims written by this provider, covering 171 Medicare beneficiaries and totaling roughly $28K in drug spend, split 5% brand-name and 95% 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 62.1316/100 for the 2023 performance year (Quality 72.4397, Cost 84.6656), 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

11020 HULL STREET RD
MIDLOTHIAN, VA 23112

Provider Details

NPI 1073739314
Specialty Physician Assistant
Credentials PA
Gender Male
NPI Issued 04/17/2007

CMS Quality Score (MIPS)

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

62.1316
Final Score
Avg: 83.1
72.4397
Quality
84.6656
Cost
0
Promoting Interoperability

Reporting: Group practice

Brand vs generic prescribing mix · Generic-heavy

DON MILLIRON, PA — brand share 5.0%
Specialty average (est.)

5% brand-name claims vs 95% generic, on 525 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.

525
Total Claims
$28K
Total Drug Cost
171
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,066
Total Day Supply
28,536
Brand vs Generic
5% brand / 95% generic
Brand Drug Cost
$19K
Generic Drug Cost
$7K
Antibiotic Claims
55

Patient Demographics

Average Patient Age
71.4 years
Avg HCC Risk Score
0.98
Gender Split
61% female / 39% male

Top Prescribed Drugs (Medicare Part D)

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

What DON MILLIRON, PA 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
Amlodipine Besylate
34
Lisinopril
31
Hydrochlorothiazide
27
Doxycycline Hyclate
25
Atorvastatin Calcium
24
Fluticasone Propionate
20
Paxlovid (Eua)
Nirmatrelvir/Ritonavir
18
Simvastatin
18
Amoxicillin-Clavulanate Potass
Amoxicillin/Potassium Clav
15
Metformin Hcl
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 DON MILLIRON, 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

DON MILLIRON, PA's 525 claims are below the specialty average of 790.

Nearby Physician Assistant Providers in Virginia

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

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

Frequently Asked Questions

What is DON MILLIRON, PA's specialty?
DON MILLIRON, PA specializes in Physician Assistant and practices in MIDLOTHIAN, Virginia. Credentials: PA.
How much does DON MILLIRON, PA prescribe under Medicare Part D?
In 2023, DON MILLIRON, PA wrote 525 Medicare Part D claims totaling $28K in drug costs for 171 beneficiaries.
What is DON MILLIRON, PA's Medicare quality score?
DON MILLIRON, PA has a CMS MIPS Final Score of 62.1316/100 (Quality: 72.4397, Cost: 84.6656). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is DON MILLIRON, PA located?
DON MILLIRON, PA is located at 11020 HULL STREET RD, MIDLOTHIAN, VA, 23112. Phone: (804) 744-6310.
What is DON MILLIRON, PA's NPI number?
DON MILLIRON, PA's National Provider Identifier (NPI) is 1073739314, issued on 04/17/2007.
Does DON MILLIRON, PA prescribe more brand-name or generic drugs?
DON MILLIRON, PA's prescribing is 5% brand-name and 95% generic drugs by claim count, with $19K 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 DON MILLIRON, PA prescribe most often?
Based on 2023 Medicare Part D data, DON MILLIRON, PA's most frequently prescribed drugs include Amlodipine Besylate, Lisinopril, Hydrochlorothiazide. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does DON MILLIRON, PA accept Medicare?
DON MILLIRON, PA appears in CMS Medicare data with 525 Part D claims and 171 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify DON MILLIRON, PA's credentials?
DON MILLIRON, PA's NPI is 1073739314 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