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2026 NPPES data Family Medicine Physician NPI 1740589621 M.D.
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Stewart Greathouse, M.D.

Family Medicine Physician in Lake Charles, Louisiana.

This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 150,125 in Family Medicine Physician, 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
8K
Medicare Part D claims · 407 beneficiaries · Family Medicine Physician avg: 4K
Generic prescribing
86%
generic claims · 14% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
73.2/100
▼ 10 pts below national avg 83.5 · Mid-tier
Industry payments
$1.3K
83 payments · CMS Open Payments (Sunshine Act)
Verify NPI on CMS Methodology
Compiled from official public sources by the editorial process.

What the federal data shows

Stewart Greathouse, M.D. reported a CMS MIPS final score of 73.2/100 - below the 83.5 national average - and filed 8,234 Medicare Part D claims in 2024.

73.2/100
MIPS score · -10 vs avg
8K
Part D claims, 2024
86%
generic prescribing
Likely
board-certified (heuristic)

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.

Federal trust snapshot

What official records show about Stewart Greathouse, M.D.

Federal records show an active NPI with both Medicare prescribing volume and a measured CMS quality score — objective registry data, not patient reviews.

  • Verified

    NPI registry status

    Active listing in the CMS National Provider Identifier Registry (NPI 1740589621), first enumerated 03/18/2011.

    Source: CMS NPPES

  • Reported

    Medicare Part D participation

    Filed 8,234 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.

    Source: CMS Part D Prescriber PUF

  • Reported

    CMS quality reporting (MIPS)

    Reported a CMS MIPS final score of 73.2/100 in the Quality Payment Program — a federal quality measure, not a patient review.

    Source: CMS Quality Payment Program

  • Reported

    Board certification signal

    Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.

    Source: NUCC taxonomy + CMS participation heuristic

  • Reported

    Hospital affiliations

    1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.

    Source: CMS Care Compare

  • Reported

    Industry payment transparency

    $1.3K in reported industry payments (83 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.

    Source: CMS Open Payments

  • Not in federal data

    Individual sanction lookup

    PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.

    Source: State medical board / FSMB

This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.

CMS NPPES provider registry desk

NPI 1740589621 · Family Medicine Physician

NPI-10 · ENUM-MID · TAX-MEGA · MIPS-LOW · RX-MID · BOOK-LIGHT · PHOTO-FINISH

  • NPI-10 1740589621
  • ENUM-MID 2011
  • TAX-MEGA 150K Family Medicine
  • MIPS-LOW 73.2/100
  • RX-MID 8,234
  • BOOK-LIGHT 1,558 in Louisiana
  • PHOTO-FINISH Nison Abayev · ±0.0

MIPS final-score neighbourhood

Same-specialty nationwide peers by CMS final score, not geographic proximity

MIPS pts

What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).

Source CMS Quality Payment Program (MIPS) As of 2023

Stewart Greathouse, M.D.'s MIPS score vs every measured U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.

73 ≥ 11th percentile 11% of 454,083 measured providers are in lower value bands

0–10: 8,684 measured providers (2%). Below this entry. 10–20: 3,008 measured providers (1%). Below this entry. 20–30: 3,069 measured providers (1%). Below this entry. 30–40: 2,746 measured providers (1%). Below this entry. 40–50: 2,928 measured providers (1%). Below this entry. 50–60: 5,882 measured providers (1%). Below this entry. 60–70: 13,906 measured providers (3%). Below this entry. 70–80: 94,570 measured providers (21%). This entry sits in this band. 80–90: 129,887 measured providers (29%). Above this entry. 90+: 189,403 measured providers (42%). Above this entry. This provider 0 100 every measured MIPS clinician, bucketed by value

Each bar is a band; taller bars hold more measured 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.

The percentile is a conservative whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.

Source CMS Merit-based Incentive Payment System (MIPS) · 2023

Where Stewart Greathouse, M.D. sits

This provider among family medicine physician peers

Across the 21,266 family medicine physician providers who report both Medicare Part D prescribing and a MIPS quality score, Stewart Greathouse, M.D. writes more Part D claims than 83% of them and scores higher on MIPS quality than 14% - placing this provider in the high-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.

Lower volume · High qualityHigh volume · High qualityLower volume · Lower qualityHigh volume · Lower quality02550751000255075100Part D claim volume, percentile in specialtyMIPS quality, percentilePoint, Part D claim volume, percentile in specialty: 92 · MIPS quality, percentile: 82Point, Part D claim volume, percentile in specialty: 67 · MIPS quality, percentile: 47Point, Part D claim volume, percentile in specialty: 17 · MIPS quality, percentile: 68Point, Part D claim volume, percentile in specialty: 63 · MIPS quality, percentile: 60Point, Part D claim volume, percentile in specialty: 42 · MIPS quality, percentile: 77Point, Part D claim volume, percentile in specialty: 22 · MIPS quality, percentile: 35Point, Part D claim volume, percentile in specialty: 3 · MIPS quality, percentile: 80Point, Part D claim volume, percentile in specialty: 27 · MIPS quality, percentile: 90Point, Part D claim volume, percentile in specialty: 5 · MIPS quality, percentile: 38Point, Part D claim volume, percentile in specialty: 7 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 68 · MIPS quality, percentile: 63Point, Part D claim volume, percentile in specialty: 62 · MIPS quality, percentile: 58Point, Part D claim volume, percentile in specialty: 32 · MIPS quality, percentile: 42Point, Part D claim volume, percentile in specialty: 20 · MIPS quality, percentile: 22Point, Part D claim volume, percentile in specialty: 70 · MIPS quality, percentile: 15Point, Part D claim volume, percentile in specialty: 12 · MIPS quality, percentile: 98Point, Part D claim volume, percentile in specialty: 60 · MIPS quality, percentile: 20Point, Part D claim volume, percentile in specialty: 37 · MIPS quality, percentile: 13Point, Part D claim volume, percentile in specialty: 43 · MIPS quality, percentile: 33Point, Part D claim volume, percentile in specialty: 18 · MIPS quality, percentile: 43Point, Part D claim volume, percentile in specialty: 75 · MIPS quality, percentile: 12Point, Part D claim volume, percentile in specialty: 23 · MIPS quality, percentile: 72Point, Part D claim volume, percentile in specialty: 2 · MIPS quality, percentile: 17Point, Part D claim volume, percentile in specialty: 10 · MIPS quality, percentile: 2Point, Part D claim volume, percentile in specialty: 53 · MIPS quality, percentile: 10Point, Part D claim volume, percentile in specialty: 80 · MIPS quality, percentile: 73Point, Part D claim volume, percentile in specialty: 85 · MIPS quality, percentile: 87Point, Part D claim volume, percentile in specialty: 88 · MIPS quality, percentile: 3Point, Part D claim volume, percentile in specialty: 33 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 13 · MIPS quality, percentile: 40Point, Part D claim volume, percentile in specialty: 82 · MIPS quality, percentile: 25Point, Part D claim volume, percentile in specialty: 83 · MIPS quality, percentile: 97Point, Part D claim volume, percentile in specialty: 98 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 27 · MIPS quality, percentile: 50Point, Part D claim volume, percentile in specialty: 48 · MIPS quality, percentile: 78Point, Part D claim volume, percentile in specialty: 50 · MIPS quality, percentile: 7Point, Part D claim volume, percentile in specialty: 93 · MIPS quality, percentile: 62Point, Part D claim volume, percentile in specialty: 90 · MIPS quality, percentile: 27Point, Part D claim volume, percentile in specialty: 55 · MIPS quality, percentile: 30Point, Part D claim volume, percentile in specialty: 97 · MIPS quality, percentile: 23Point, Part D claim volume, percentile in specialty: 65 · MIPS quality, percentile: 50Point, Part D claim volume, percentile in specialty: 8 · MIPS quality, percentile: 17Point, Part D claim volume, percentile in specialty: 73 · MIPS quality, percentile: 48Point, Part D claim volume, percentile in specialty: 40 · MIPS quality, percentile: 32Point, Part D claim volume, percentile in specialty: 25 · MIPS quality, percentile: 8Point, Part D claim volume, percentile in specialty: 15 · MIPS quality, percentile: 28Point, Part D claim volume, percentile in specialty: 45 · MIPS quality, percentile: 45Point, Part D claim volume, percentile in specialty: 30 · MIPS quality, percentile: 82Point, Part D claim volume, percentile in specialty: 100 · MIPS quality, percentile: 98Point, Part D claim volume, percentile in specialty: 38 · MIPS quality, percentile: 68Point, Part D claim volume, percentile in specialty: 0 · MIPS quality, percentile: 73Point, Part D claim volume, percentile in specialty: 78 · MIPS quality, percentile: 50Point, Part D claim volume, percentile in specialty: 52 · MIPS quality, percentile: 55Point, Part D claim volume, percentile in specialty: 58 · MIPS quality, percentile: 85Point, Part D claim volume, percentile in specialty: 57 · MIPS quality, percentile: 63Point, Part D claim volume, percentile in specialty: 72 · MIPS quality, percentile: 87Point, Part D claim volume, percentile in specialty: 77 · MIPS quality, percentile: 57Point, Part D claim volume, percentile in specialty: 35 · MIPS quality, percentile: 67Point, Part D claim volume, percentile in specialty: 95 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 47 · MIPS quality, percentile: 37Stewart Greathouse, M.D., Part D claim volume, percentile in specialty: 83 · MIPS quality, percentile: 14
Part D claim volume vs MIPS quality, by specialty percentile

Each dot is one family medicine physician peer from a representative sample of 60; the gold marker is Stewart Greathouse, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.

✓
Board certification likely (heuristic, not verified)

Stewart Greathouse, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 1 hospital affiliation - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about Stewart Greathouse, M.D.?

Below national average

NPI registry status

Active

Issued 03/18/2011

NPI 1740589621

Primary specialty

Family Medicine Physician

High-volume

150,125 US NPIs in this specialty

Medicare Part D claims

8,234 134% vs specialty avg

2024 prescription claims

Specialty avg: 3,519

MIPS final score

73.2/100 10.3 pts vs avg

Mid-tier band

vs 83.5 national avg

Specialty distribution in Louisiana

How Family Medicine Physician compares to other specialties among Louisiana providers

Louisiana providers
Case Manager/Care Coordinator9.6%Mental Health Counselor7.2%Behavior Technician5.5%Student in an Organized Heal…5.1%Pharmacist5.1%Family Nurse Practitioner4.6%Family Medicine Physician1.7%
Largest specialties in Louisiana (% of in-state providers)

Medicare quality performance, MIPS

Stewart Greathouse, M.D.'s 2023 MIPS final score plotted against the Family Medicine Physician national average

Below national average
MIPS Final Score
73.2/100
vs 83.5 national avg · 2023 performance year
0%100%National avg84%73.2%
MIPS final score (Family Medicine Physician) - 73.2/100 vs national avg 83.5
How MIPS and board certification work

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).

Practice Address

217 SAM HOUSTON JONES PKWY
Lake Charles, LA 70611
(337) 480-8989

Provider Details

NPI 1740589621
Specialty Family Medicine Physician
Credentials M.D.
Gender Male
NPI Issued 03/18/2011

CMS Quality Score (MIPS)

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

73.1923
Final Score
Measured-score avg: 83.5
76.6448
Quality
49.6366
Cost

Reporting: Individual

Hospital and facility affiliations

Facilities where Stewart Greathouse, M.D. 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.

Lake Charles Medical Services Family Practice Associates, LLC
Lake Charles, LA

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 Stewart Greathouse, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$1.3K

Largest payer

ABBVIE 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.

Brand vs generic prescribing mix · Typical

Stewart Greathouse, M.D. - brand share 14.0%
Family Medicine Physician average

14% brand-name claims vs 86% generic, on 8,234 2024 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 2024.

8,234
Total Claims
$902K
Total Drug Cost
407
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
17,681.667
Total Day Supply
512,138
Brand vs Generic
14% brand / 86% generic
Brand Drug Cost
$796K
Generic Drug Cost
$105K
Opioid Claims
238 (2.9% rate)
Antibiotic Claims
168

Patient Demographics

Average Patient Age
71.5 years
Avg HCC Risk Score
1.09
Gender Split
50% female / 50% male
Age Distribution
<65: 50, 65-74: 216, 75-84: 96, 85+: 45

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.

What Stewart Greathouse, M.D. prescribes most

Top Medicare Part D drugs by claim count, 2024

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2024
Drug Claims
Atorvastatin Calcium
 530
Pantoprazole Sodium
 297
Levothyroxine Sodium
 249
Amlodipine Besylate
 246
Furosemide
 204
Gabapentin
 203
Losartan Potassium
 154
Lisinopril
 152
Mounjaro
Tirzepatide
148
Alprazolam
 136

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

More Family Medicine Physician in LA → All providers in Louisiana → Compare specialties →

Family Medicine Physician Overview

How Stewart Greathouse, M.D. fits within the Family Medicine Physician landscape nationally.

150,125
Family Medicine Physician Providers in US
56
States with Family Medicine Physician
3,519
Avg Claims per Provider

Stewart Greathouse, M.D.'s 8,234 claims are above the specialty average of 3,519.

Nationwide Family Medicine Physician peers with similar MIPS or enrollment year

Two federal-record peer sets for Greathouse, both outside Louisiana so the neighborhoods are not geographic containment.

Similar MIPS final score

Nearest same-specialty clinicians by CMS MIPS final score (73.2 here).

Nison Abayev 73.2 KY Mini Aggarwal 73.2 KY Leticia Allen 73.2 KY Jonathan Becker 73.2 KY

Same NPPES enumeration year (2011)

Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.

Keren Rosner Brookfield, WI Javier Diago Benjumea Houston, TX Robert Temkin Tavernier, FL Martina Peri Falls Church, VA

Nearby Family Medicine Physician Providers in Louisiana

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

One of 1,558 Family Medicine Physician providers enrolled in Louisiana, 5 are shown here.

Brittany Abadie
NP
Gramercy, LA
Dr. Ubaid Abbasi
MD
Baton Rouge, LA
Claire Abel
APRN
Iowa, LA
Dr. Lamia Abisamra
MD
Metairie, LA
Dr. Matthew Abraham
M.D.
Lafayette, LA

Compare Family Medicine Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is Stewart Greathouse, M.D.'s specialty? ▼
Stewart Greathouse, M.D. specializes in Family Medicine Physician and practices in Lake Charles, Louisiana. Credentials: M.D..
How much does Stewart Greathouse, M.D. prescribe under Medicare Part D? ▼
In 2024, Stewart Greathouse, M.D. wrote 8,234 Medicare Part D claims totaling $902K in drug costs for 407 beneficiaries.
What is Stewart Greathouse, M.D.'s Medicare quality score? ▼
Stewart Greathouse, M.D. has a CMS MIPS Final Score of 73.2/100 (Quality: 76.6, Cost: 49.6). The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Stewart Greathouse, M.D. located? ▼
Stewart Greathouse, M.D. is located at 217 SAM HOUSTON JONES PKWY, Lake Charles, LA, 70611. Phone: (337) 480-8989.
What is Stewart Greathouse, M.D.'s NPI number? ▼
Stewart Greathouse, M.D.'s National Provider Identifier (NPI) is 1740589621, issued on 03/18/2011.
Does Stewart Greathouse, M.D. prescribe more brand-name or generic drugs? ▼
Stewart Greathouse, M.D.'s prescribing is 14% brand-name and 86% generic drugs by claim count, with $796K in brand drug costs.
Does Stewart Greathouse, M.D. prescribe opioids? ▼
Yes, Stewart Greathouse, M.D. had 238 opioid claims in 2024 with an opioid prescribing rate of 2.9%.
How many Family Medicine Physician providers are there in the US? ▼
There are 150,125 Family Medicine Physician providers across 56 states in the US. The average Family Medicine Physician provider writes 3,519 Medicare Part D claims per year.
What drugs does Stewart Greathouse, M.D. prescribe most often? ▼
Based on 2024 Medicare Part D data, Stewart Greathouse, M.D.'s most frequently prescribed drugs include Atorvastatin Calcium, Pantoprazole Sodium, Levothyroxine Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Stewart Greathouse, M.D. accept Medicare? ▼
Stewart Greathouse, M.D. appears in CMS Medicare data with 8,234 Part D claims and 407 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Stewart Greathouse, M.D.'s credentials? ▼
Stewart Greathouse, M.D.'s NPI is 1740589621 with credentials M.D.. 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

View source datasets and methodology notes
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 (2024). 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 August 2026 (NPPES) / 2024 (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 editorial process.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.