2026 NPPES data Emergency Medicine Physician NPI 1477560803 M.D.
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STEPHEN THORNTON, M.D.

Emergency Medicine Physician in KANSAS CITY, Kansas. 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
84
Medicare Part D claims · 15 beneficiaries · Emergency Medicine Physician avg: 352
Generic prescribing
82%
generic claims · 18% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
91.8902/100
▲ 9 pts above national avg 83.1 · [object Object]
Industry payments
$40
2 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

STEPHEN THORNTON, M.D. reported a CMS MIPS final score of 91.8902/100 — above the 83.1 national average — and filed 84 Medicare Part D claims in 2023.

91.8902/100
MIPS score · +9 vs avg
84
Part D claims, 2023
82%
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.

STEPHEN THORNTON, M.D.'s MIPS score vs every scored U.S. clinician

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

92 Top 37% higher than 63% 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

Board certification likely (heuristic — not verified)

STEPHEN THORNTON, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 2 hospital affiliations — 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 STEPHEN THORNTON, M.D.?

High performer (top quartile)

NPI registry status

Active

Issued 08/01/2006

NPI 1477560803

Primary specialty

Emergency Medicine Physician

High-volume

64,398 US NPIs in this specialty

Medicare Part D claims

84 76% vs specialty avg

2023 prescription claims

Specialty avg: 352

MIPS final score

91.8902/100 8.790199999999999% pts

Exceptional band

vs 83.1 national avg

Specialty distribution in Kansas

How Emergency Medicine Physician compares to other specialties among Kansas providers

Kansas providers

Emergency Medicine Physician share within Kansas

1. Emergency Medicine Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Emergency Medicine Physician share within Kansas

Medicare quality performance — MIPS

STEPHEN THORNTON, M.D.'s 2023 MIPS final score plotted against the Emergency Medicine Physician national average

High performer (top quartile)
MIPS Final Score
91.8902/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Emergency Medicine Physician) — 91.8902/100 vs national avg 83.1

0%100%National avg83%91.9%
MIPS final score (Emergency Medicine Physician) — 91.8902/100 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).

STEPHEN THORNTON, M.D. appears in the CMS NPPES registry as a Emergency Medicine Physician provider holding M.D. credentials at 4000 CAMBRIDGE STREET 4045B DELP, KANSAS CITY, KS, 66160, with a listed phone of (913) 914-6088. NPI 1477560803 was issued on 08/01/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what THORNTON 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 84 prescription claims written by this provider, covering 15 Medicare beneficiaries and totaling roughly $35K in drug spend, split 18% brand-name and 82% 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 91.8902/100 for the 2023 performance year (Quality 75.1734), compared with the national average of 83.1.

Emergency Medicine Physician is a high-volume specialty nationwide, with 64,398 enrolled providers across 56 states and an average of 352 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

4000 CAMBRIDGE STREET 4045B DELP
KANSAS CITY, KS 66160

Provider Details

NPI 1477560803
Specialty Emergency Medicine Physician
Credentials M.D.
Gender Male
NPI Issued 08/01/2006

CMS Quality Score (MIPS)

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

91.8902
Final Score
Avg: 83.1
75.1734
Quality
100
Promoting Interoperability

Reporting: Alternative Payment Model

Hospital and facility affiliations

Facilities where STEPHEN THORNTON, 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.

KANSAS UNIVERSITY PHYSICIANS INC
KANSAS CITY, MO
UNIVERSITY OF KANSAS HOSPITAL AUTHORITY
KANSAS CITY, KS

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 STEPHEN THORNTON, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$40

Largest payer

CSL Behring

Most common payment type

Education

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

STEPHEN THORNTON, M.D. — brand share 18.0%
Specialty average (est.)

18% brand-name claims vs 82% generic, on 84 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.

84
Total Claims
$35K
Total Drug Cost
15
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
110
Total Day Supply
2,711
Brand vs Generic
18% brand / 82% generic
Brand Drug Cost
$26K
Generic Drug Cost
$9K

Patient Demographics

Average Patient Age
62.8 years
Avg HCC Risk Score
1.95

Top Prescribed Drugs (Medicare Part D)

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

What STEPHEN THORNTON, M.D. 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
Buprenorphine-Naloxone
Buprenorphine Hcl/Naloxone Hcl
27
Vivitrol
Naltrexone Microspheres
13
Buprenorphine Hcl
11

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

Emergency Medicine Physician Overview

How STEPHEN THORNTON, M.D. fits within the Emergency Medicine Physician landscape nationally.

64,398
Emergency Medicine Physician Providers in US
56
States with Emergency Medicine Physician
352
Avg Claims per Provider

STEPHEN THORNTON, M.D.'s 84 claims are below the specialty average of 352.

Nearby Emergency Medicine Physician Providers in Kansas

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

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

Frequently Asked Questions

What is STEPHEN THORNTON, M.D.'s specialty?
STEPHEN THORNTON, M.D. specializes in Emergency Medicine Physician and practices in KANSAS CITY, Kansas. Credentials: M.D..
How much does STEPHEN THORNTON, M.D. prescribe under Medicare Part D?
In 2023, STEPHEN THORNTON, M.D. wrote 84 Medicare Part D claims totaling $35K in drug costs for 15 beneficiaries.
What is STEPHEN THORNTON, M.D.'s Medicare quality score?
STEPHEN THORNTON, M.D. has a CMS MIPS Final Score of 91.8902/100 (Quality: 75.1734). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is STEPHEN THORNTON, M.D. located?
STEPHEN THORNTON, M.D. is located at 4000 CAMBRIDGE STREET 4045B DELP, KANSAS CITY, KS, 66160. Phone: (913) 914-6088.
What is STEPHEN THORNTON, M.D.'s NPI number?
STEPHEN THORNTON, M.D.'s National Provider Identifier (NPI) is 1477560803, issued on 08/01/2006.
Does STEPHEN THORNTON, M.D. prescribe more brand-name or generic drugs?
STEPHEN THORNTON, M.D.'s prescribing is 18% brand-name and 82% generic drugs by claim count, with $26K in brand drug costs.
How many Emergency Medicine Physician providers are there in the US?
There are 64,398 Emergency Medicine Physician providers across 56 states in the US. The average Emergency Medicine Physician provider writes 352 Medicare Part D claims per year.
What drugs does STEPHEN THORNTON, M.D. prescribe most often?
Based on 2023 Medicare Part D data, STEPHEN THORNTON, M.D.'s most frequently prescribed drugs include Buprenorphine-Naloxone, Vivitrol, Buprenorphine Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does STEPHEN THORNTON, M.D. accept Medicare?
STEPHEN THORNTON, M.D. appears in CMS Medicare data with 84 Part D claims and 15 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify STEPHEN THORNTON, M.D.'s credentials?
STEPHEN THORNTON, M.D.'s NPI is 1477560803 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

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