2026 NPPES data Physician Assistant NPI 1518407071 PA
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Luke Williamson, PA

Physician Assistant in Houston, Texas. This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers — including 149,975 in Physician Assistant, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration — see our methodology.

Federal data — no proprietary rating. We show these CMS records as-is — no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
449
Medicare Part D claims · 238 beneficiaries · Physician Assistant avg: 790
Generic prescribing
96%
generic claims · 4% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
93.2/100
▲ 10 pts above national avg 83.1 · Exceptional
Industry payments
$75.24
3 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Luke Williamson, PA reported a CMS MIPS final score of 93.2/100 — above the 83.1 national average — and filed 449 Medicare Part D claims in 2023.

93.2/100
MIPS score · +10 vs avg
449
Part D claims, 2023
96%
generic prescribing
$75.24
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.

Luke Williamson, PA's MIPS score vs every scored U.S. clinician

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

93 Top 29% higher than 71% 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

Where Luke Williamson, PA sits

This provider among physician assistant peers

Across the 27,054 physician assistant providers who report both Medicare Part D prescribing and a MIPS quality score, Luke Williamson, PA writes more Part D claims than 66% of them and scores higher on MIPS quality than 70% — placing this provider in the high-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.

Part D claim volume vs MIPS quality, by specialty percentile

Lower volume · High qualityHigh volume · High qualityLower volume · Lower qualityHigh volume · Lower quality02550751000255075100Part D claim volume — percentile in specialtyMIPS quality — percentilePart D claim volume — percentile in specialty: 35 · MIPS quality — percentile: 35Part D claim volume — percentile in specialty: 60 · MIPS quality — percentile: 5Part D claim volume — percentile in specialty: 55 · MIPS quality — percentile: 13Part D claim volume — percentile in specialty: 98 · MIPS quality — percentile: 10Part D claim volume — percentile in specialty: 73 · MIPS quality — percentile: 95Part D claim volume — percentile in specialty: 0 · MIPS quality — percentile: 43Part D claim volume — percentile in specialty: 97 · MIPS quality — percentile: 50Part D claim volume — percentile in specialty: 67 · MIPS quality — percentile: 33Part D claim volume — percentile in specialty: 48 · MIPS quality — percentile: 72Part D claim volume — percentile in specialty: 88 · MIPS quality — percentile: 38Part D claim volume — percentile in specialty: 83 · MIPS quality — percentile: 65Part D claim volume — percentile in specialty: 68 · MIPS quality — percentile: 78Part D claim volume — percentile in specialty: 23 · MIPS quality — percentile: 62Part D claim volume — percentile in specialty: 25 · MIPS quality — percentile: 73Part D claim volume — percentile in specialty: 62 · MIPS quality — percentile: 20Part D claim volume — percentile in specialty: 28 · MIPS quality — percentile: 32Part D claim volume — percentile in specialty: 57 · MIPS quality — percentile: 15Part D claim volume — percentile in specialty: 7 · MIPS quality — percentile: 48Part D claim volume — percentile in specialty: 87 · MIPS quality — percentile: 58Part D claim volume — percentile in specialty: 30 · MIPS quality — percentile: 98Part D claim volume — percentile in specialty: 15 · MIPS quality — percentile: 82Part D claim volume — percentile in specialty: 70 · MIPS quality — percentile: 12Part D claim volume — percentile in specialty: 95 · MIPS quality — percentile: 57Part D claim volume — percentile in specialty: 75 · MIPS quality — percentile: 28Part D claim volume — percentile in specialty: 7 · MIPS quality — percentile: 97Part D claim volume — percentile in specialty: 27 · MIPS quality — percentile: 77Part D claim volume — percentile in specialty: 10 · MIPS quality — percentile: 0Part D claim volume — percentile in specialty: 58 · MIPS quality — percentile: 17Part D claim volume — percentile in specialty: 12 · MIPS quality — percentile: 82Part D claim volume — percentile in specialty: 90 · MIPS quality — percentile: 42Part D claim volume — percentile in specialty: 42 · MIPS quality — percentile: 23Part D claim volume — percentile in specialty: 38 · MIPS quality — percentile: 85Part D claim volume — percentile in specialty: 40 · MIPS quality — percentile: 88Part D claim volume — percentile in specialty: 50 · MIPS quality — percentile: 90Part D claim volume — percentile in specialty: 32 · MIPS quality — percentile: 98Part D claim volume — percentile in specialty: 13 · MIPS quality — percentile: 70Part D claim volume — percentile in specialty: 43 · MIPS quality — percentile: 3Part D claim volume — percentile in specialty: 63 · MIPS quality — percentile: 67Part D claim volume — percentile in specialty: 72 · MIPS quality — percentile: 22Part D claim volume — percentile in specialty: 3 · MIPS quality — percentile: 47Part D claim volume — percentile in specialty: 53 · MIPS quality — percentile: 60Part D claim volume — percentile in specialty: 80 · MIPS quality — percentile: 18Part D claim volume — percentile in specialty: 2 · MIPS quality — percentile: 45Part D claim volume — percentile in specialty: 85 · MIPS quality — percentile: 37Part D claim volume — percentile in specialty: 77 · MIPS quality — percentile: 93Part D claim volume — percentile in specialty: 22 · MIPS quality — percentile: 63Part D claim volume — percentile in specialty: 33 · MIPS quality — percentile: 55Part D claim volume — percentile in specialty: 37 · MIPS quality — percentile: 8Part D claim volume — percentile in specialty: 100 · MIPS quality — percentile: 30Part D claim volume — percentile in specialty: 78 · MIPS quality — percentile: 2Part D claim volume — percentile in specialty: 65 · MIPS quality — percentile: 23Part D claim volume — percentile in specialty: 5 · MIPS quality — percentile: 23Part D claim volume — percentile in specialty: 45 · MIPS quality — percentile: 7Part D claim volume — percentile in specialty: 82 · MIPS quality — percentile: 90Part D claim volume — percentile in specialty: 92 · MIPS quality — percentile: 80Part D claim volume — percentile in specialty: 20 · MIPS quality — percentile: 53Part D claim volume — percentile in specialty: 47 · MIPS quality — percentile: 52Part D claim volume — percentile in specialty: 93 · MIPS quality — percentile: 87Part D claim volume — percentile in specialty: 17 · MIPS quality — percentile: 73Part D claim volume — percentile in specialty: 18 · MIPS quality — percentile: 40Luke Williamson, PA — Part D claim volume — percentile in specialty: 66 · MIPS quality — percentile: 70
Part D claim volume vs MIPS quality, by specialty percentile

Each dot is one physician assistant peer from a representative sample of 60; the gold marker is Luke Williamson, PA. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.

What does the federal data show about Luke Williamson, PA?

High performer (top quartile)

NPI registry status

Active

Issued 03/03/2017

NPI 1518407071

Primary specialty

Physician Assistant

High-volume

149,975 US NPIs in this specialty

Medicare Part D claims

449 43% vs specialty avg

2023 prescription claims

Specialty avg: 790

MIPS final score

93.2/100 10.1 pts vs avg

Exceptional band

vs 83.1 national avg

Specialty distribution in Texas

How Physician Assistant compares to other specialties among Texas providers

Texas providers

Largest specialties in Texas (% of in-state providers)

Behavior Technician — 5.6%Behavior Technician5.6%Student in an Organized Health Care Education/Training Program — 5.1%Student in an Organized Health Care Education/Training Program5.1%Family Nurse Practitioner — 4.5%Family Nurse Practitioner4.5%Professional Counselor — 4.4%Professional Counselor4.4%Pharmacist — 4.4%Pharmacist4.4%Speech-Language Pathologist — 3.9%Speech-Language Pathologist3.9%Physician Assistant — 2.4%Physician Assistant2.4%
Largest specialties in Texas (% of in-state providers)

Medicare quality performance — MIPS

Luke Williamson, PA's 2023 MIPS final score plotted against the Physician Assistant national average

High performer (top quartile)
MIPS Final Score
93.2/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Physician Assistant) — 93.2/100 vs national avg 83.1

0%100%National avg83%93.2%
MIPS final score (Physician Assistant) — 93.2/100 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).

Luke Williamson, PA appears in the CMS NPPES registry as a Physician Assistant provider holding PA credentials at 7401 MAIN ST, Houston, TX, 77030, with a listed phone of (713) 799-2300. NPI 1518407071 was issued on 03/03/2017. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Williamson 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 449 prescription claims written by this provider, covering 238 Medicare beneficiaries and totaling roughly $19K in drug spend, split 4% brand-name and 96% generic by claim count, with an opioid prescribing rate of 28.3%. 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 93.2/100 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

7401 MAIN ST
Houston, TX 77030

Provider Details

NPI 1518407071
Specialty Physician Assistant
Credentials PA
Gender Male
NPI Issued 03/03/2017

CMS Quality Score (MIPS)

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

93.2
Final Score
Avg: 83.1
92
Promoting Interoperability

Reporting: Group practice

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 Luke Williamson, PA. Source: openpaymentsdata.cms.gov.

Total received

$75

Largest payer

Smith+Nephew, 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 — Texas TMB 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 ~77K Texas medical licensees in 2023 — they are NOT specific to Luke Williamson, PA. To verify Luke Williamson, PA's current license status, search the TMB public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

344
Total board actions, Texas 2023
Across 334 cases
4.47
Actions per 1,000 licensees
Texas statewide rate
probation
Most common action type
94 cases

TMB 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 Texas disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Generic-heavy

Luke Williamson, PA — brand share 4.0%
Physician Assistant average

4% brand-name claims vs 96% generic, on 449 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.

449
Total Claims
$19K
Total Drug Cost
238
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
449
Total Day Supply
4,030
Brand vs Generic
4% brand / 96% generic
Brand Drug Cost
$5K
Generic Drug Cost
$14K
Opioid Claims
127 (28.3% rate)
Antibiotic Claims
53

Patient Demographics

Average Patient Age
70.5 years
Avg HCC Risk Score
1.28
Gender Split
66% female / 34% male

Top Prescribed Drugs (Medicare Part D)

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

What Luke Williamson, 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
Ondansetron Hcl
118
Methylprednisolone
82
Oxycodone-Acetaminophen
Oxycodone Hcl/Acetaminophen
73
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
33
Clindamycin Hcl
29
Meloxicam
20
Tramadol Hcl
18
Cephalexin
13
Calcipotriene
12
Eliquis
Apixaban
11

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

Physician Assistant Overview

How Luke Williamson, 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

Luke Williamson, PA's 449 claims are below the specialty average of 790.

Nearby Physician Assistant Providers in Texas

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

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

Before you book an appointment

Use this federal record as your verification checklist, not as a recommendation.

  • Confirm the NPI record is current in the official CMS registry — providers update their own NPPES details, and moves can lag. Verify this NPI
  • Check the active license and any disciplinary history with the Texas medical board — federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Physician Assistant peer on Medicare volume and prescribing patterns. Compare providers

Medicare Part D and MIPS figures describe practice patterns in federal programs only — they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.

Frequently Asked Questions

What is Luke Williamson, PA's specialty?
Luke Williamson, PA specializes in Physician Assistant and practices in Houston, Texas. Credentials: PA.
How much does Luke Williamson, PA prescribe under Medicare Part D?
In 2023, Luke Williamson, PA wrote 449 Medicare Part D claims totaling $19K in drug costs for 238 beneficiaries.
What is Luke Williamson, PA's Medicare quality score?
Luke Williamson, PA has a CMS MIPS Final Score of 93.2/100. The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Luke Williamson, PA located?
Luke Williamson, PA is located at 7401 MAIN ST, Houston, TX, 77030. Phone: (713) 799-2300.
What is Luke Williamson, PA's NPI number?
Luke Williamson, PA's National Provider Identifier (NPI) is 1518407071, issued on 03/03/2017.
Does Luke Williamson, PA prescribe more brand-name or generic drugs?
Luke Williamson, PA's prescribing is 4% brand-name and 96% generic drugs by claim count, with $5K in brand drug costs.
Does Luke Williamson, PA prescribe opioids?
Yes, Luke Williamson, PA had 127 opioid claims in 2023 with an opioid prescribing rate of 28.3%.
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 Luke Williamson, PA prescribe most often?
Based on 2023 Medicare Part D data, Luke Williamson, PA's most frequently prescribed drugs include Ondansetron Hcl, Methylprednisolone, Oxycodone-Acetaminophen. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Luke Williamson, PA accept Medicare?
Luke Williamson, PA appears in CMS Medicare data with 449 Part D claims and 238 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Luke Williamson, PA's credentials?
Luke Williamson, PA's NPI is 1518407071 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

Compiled from official public sources by the PlainDoctor editorial team.