2026 NPPES data Surgery Physician NPI 1124027446 M.D.
Verify on CMS →

MARSHALL JOHNSON, M.D.

Surgery Physician in ELIZABETHTOWN, Kentucky. 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
93
Medicare Part D claims · 22 beneficiaries · Surgery Physician avg: 169
Generic prescribing
75%
generic claims · 25% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
95.5077/100
▲ 12 pts above national avg 83.1 · [object Object]
What the federal data reveals: MARSHALL JOHNSON, M.D. is a Surgery Physician ([object Object]) practicing in ELIZABETHTOWN, Kentucky with a Medicare Part D prescribing footprint of 93 claims across 22 beneficiaries — 25% brand-name prescribing . Their CMS MIPS Final Score of 95.5077/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities .

What stands out: MARSHALL JOHNSON, M.D. reported a CMS MIPS final score of 95.5077 out of 100, above the 83.1 national average, and filed 93 Medicare Part D claims in 2023. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

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

MARSHALL JOHNSON, M.D. at a glance

High performer (top quartile)

NPI registry status

Active

Issued 07/19/2005

NPI 1124027446

Primary specialty

Surgery Physician

Mid-sized

36,191 US NPIs in this specialty

Medicare Part D claims

93 45% vs specialty avg

2023 prescription claims

Specialty avg: 169

MIPS final score

95.5077/100 12.407700000000006% pts

Exceptional band

vs 83.1 national avg

Specialty distribution in Kentucky

How Surgery Physician compares to other specialties among Kentucky providers

Kentucky providers

Surgery Physician share within Kentucky

1. Surgery Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Surgery Physician share within Kentucky

Medicare quality performance — MIPS

MARSHALL JOHNSON, M.D.'s 2023 MIPS final score plotted against the Surgery Physician national average

High performer (top quartile)
MIPS Final Score
95.5077/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Surgery Physician) — 95.5077/100 vs national avg 83.1

0%100%National avg83%95.5%
MIPS final score (Surgery Physician) — 95.5077/100 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).

MARSHALL JOHNSON, M.D. is a Surgery Physician provider practicing in ELIZABETHTOWN, Kentucky, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1124027446. 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.

MARSHALL JOHNSON, M.D. appears in the CMS NPPES registry as a Surgery Physician provider holding M.D. credentials at 1700 RING RD, ELIZABETHTOWN, KY, 42701, with a listed phone of (270) 769-5551. NPI 1124027446 was issued on 07/19/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what JOHNSON 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 93 prescription claims written by this provider, covering 22 Medicare beneficiaries and totaling roughly $12K in drug spend, split 25% brand-name and 75% 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 95.5077/100 for the 2023 performance year (Quality 89.5953), compared with the national average of 83.1.

Surgery Physician is a mid-sized specialty nationwide, with 36,191 enrolled providers across 56 states and an average of 169 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

1700 RING RD
ELIZABETHTOWN, KY 42701

Provider Details

NPI 1124027446
Specialty Surgery Physician
Credentials M.D.
Gender Male
NPI Issued 07/19/2005

CMS Quality Score (MIPS)

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

95.5077
Final Score
Avg: 83.1
89.5953
Quality
100
Promoting Interoperability

Reporting: Alternative Payment Model

Brand vs generic prescribing mix · Above average

MARSHALL JOHNSON, M.D. — brand share 25.0%
Specialty average (est.)

25% brand-name claims vs 75% generic, on 93 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.

93
Total Claims
$12K
Total Drug Cost
22
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
156
Total Day Supply
3,908
Brand vs Generic
25% brand / 75% generic
Brand Drug Cost
$9K
Generic Drug Cost
$2K
Antibiotic Claims
24

Patient Demographics

Average Patient Age
71.5 years
Avg HCC Risk Score
3.05

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Cephalexin
12

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

Surgery Physician Overview

How MARSHALL JOHNSON, M.D. fits within the Surgery Physician landscape nationally.

36,191
Surgery Physician Providers in US
56
States with Surgery Physician
169
Avg Claims per Provider

MARSHALL JOHNSON, M.D.'s 93 claims are below the specialty average of 169.

Nearby Surgery Physician Providers in Kentucky

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

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

Frequently Asked Questions

What is MARSHALL JOHNSON, M.D.'s specialty?
MARSHALL JOHNSON, M.D. specializes in Surgery Physician and practices in ELIZABETHTOWN, Kentucky. Credentials: M.D..
How much does MARSHALL JOHNSON, M.D. prescribe under Medicare Part D?
In 2023, MARSHALL JOHNSON, M.D. wrote 93 Medicare Part D claims totaling $12K in drug costs for 22 beneficiaries.
What is MARSHALL JOHNSON, M.D.'s Medicare quality score?
MARSHALL JOHNSON, M.D. has a CMS MIPS Final Score of 95.5077/100 (Quality: 89.5953). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is MARSHALL JOHNSON, M.D. located?
MARSHALL JOHNSON, M.D. is located at 1700 RING RD, ELIZABETHTOWN, KY, 42701. Phone: (270) 769-5551.
What is MARSHALL JOHNSON, M.D.'s NPI number?
MARSHALL JOHNSON, M.D.'s National Provider Identifier (NPI) is 1124027446, issued on 07/19/2005.
Does MARSHALL JOHNSON, M.D. prescribe more brand-name or generic drugs?
MARSHALL JOHNSON, M.D.'s prescribing is 25% brand-name and 75% generic drugs by claim count, with $9K in brand drug costs.
How many Surgery Physician providers are there in the US?
There are 36,191 Surgery Physician providers across 56 states in the US. The average Surgery Physician provider writes 169 Medicare Part D claims per year.
What drugs does MARSHALL JOHNSON, M.D. prescribe most often?
Based on 2023 Medicare Part D data, MARSHALL JOHNSON, M.D.'s most frequently prescribed drugs include Cephalexin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does MARSHALL JOHNSON, M.D. accept Medicare?
MARSHALL JOHNSON, M.D. appears in CMS Medicare data with 93 Part D claims and 22 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify MARSHALL JOHNSON, M.D.'s credentials?
MARSHALL JOHNSON, M.D.'s NPI is 1124027446 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