NPI registry status
Active
2026 NPPES data MOHS-Micrographic Surgery Physician NPI 1457355174 M.D.
Verify on CMS → John Buker, M.D.
MOHS-Micrographic Surgery Physician in Lexington, Kentucky.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 1,107 in MOHS-Micrographic Surgery 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
33
Medicare Part D claims · 12 beneficiaries · MOHS-Micrographic Surgery Physician avg: 607
Generic prescribing
39%
generic claims · 61% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
100/100
▲ 17 pts above national avg 83.1 · Exceptional
Industry payments
$6.4K
16 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
John Buker, M.D. reported a CMS MIPS final score of 100/100 - above the 83.1 national average - and filed 33 Medicare Part D claims in 2023.
- 100/100
- MIPS score · +17 vs avg
- 33
- Part D claims, 2023
- 39%
- 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.
John Buker, 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
100 Top 7% higher than 93% of 477,587 scored providers
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 John Buker, M.D. sits
This provider among mohs-micrographic surgery physician peers
Across the 705 mohs-micrographic surgery physician providers who report both Medicare Part D prescribing and a MIPS quality score, John Buker, M.D. writes more Part D claims than 2% of them and scores higher on MIPS quality than 87% - placing this provider in the lower-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
Each dot is one mohs-micrographic surgery physician peer from a representative sample of 60; the gold marker is John Buker, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
John Buker, 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).
What does the federal data show about John Buker, M.D.?
High performer (top quartile)Primary specialty
MOHS-Micrographic Surgery Physician
Medicare Part D claims
33 95% vs specialty avg
MIPS final score
100/100 16.9 pts vs avg
Specialty distribution in Kentucky
How MOHS-Micrographic Surgery Physician compares to other specialties among Kentucky providers
Medicare quality performance, MIPS
John Buker, M.D.'s 2023 MIPS final score plotted against the MOHS-Micrographic Surgery Physician national average
- MIPS Final Score
- 100/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (MOHS-Micrographic Surgery Physician) - 100/100 vs national avg 83.1
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).
John Buker, M.D. appears in the CMS NPPES registry as a MOHS-Micrographic Surgery Physician provider holding M.D. credentials at 3475 RICHMOND RD, Lexington, KY, 40509, with a listed phone of (859) 296-4400. NPI 1457355174 was issued on 06/10/2005.
Medicare Part D records for calendar year 2023 show 33 prescription claims written by this provider, covering 12 Medicare beneficiaries and totaling roughly $149K in drug spend, split 61% brand-name and 39% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 100/100 for the 2023 performance year (Quality 100), compared with the national average of 83.1.
MOHS-Micrographic Surgery Physician is a narrow specialty nationwide, with 1,107 enrolled providers across 52 states and an average of 607 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
Provider Details
| NPI | 1457355174 |
|---|---|
| Specialty | MOHS-Micrographic Surgery Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 06/10/2005 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
100
Final Score
Avg: 83.1
100
Quality
100
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 John Buker, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$6.4K
Largest payer
ABBVIE INC.
Most common payment type
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program
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 · Brand-heavy
John Buker, M.D. - brand share 61.0%
MOHS-Micrographic Surgery Physician average
61% brand-name claims vs 39% generic, on 33 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.
33
Total Claims
$149K
Total Drug Cost
12
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 33
- Total Day Supply
- 729
- Brand vs Generic
- 61% brand / 39% generic
- Brand Drug Cost
- $149K
- Generic Drug Cost
- $236
Patient Demographics
- Average Patient Age
- 79.6 years
- Avg HCC Risk Score
- 1.20
- Age Distribution
- <65: 0, 65-74: N/A, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Erivedge Vismodegib | 20 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
MOHS-Micrographic Surgery Physician Overview
How John Buker, M.D. fits within the MOHS-Micrographic Surgery Physician landscape nationally.
1,107
MOHS-Micrographic Surgery Physician Providers in US
52
States with MOHS-Micrographic Surgery Physician
607
Avg Claims per Provider
John Buker, M.D.'s 33 claims are below the specialty average of 607.
Nearby MOHS-Micrographic Surgery Physician Providers in Kentucky
Other clinicians with the same primary specialty enrolled in Kentucky, drawn from the same CMS NPPES roster as Buker.
Dr. Joseph Blackmon
M.D.
Paducah, KY
Dr. Timothy Brown
M.D.
Louisville, KY
Dr. Jack Ditty
M.D.
Ashland, KY
Dr. Johnathon Edge
MD
Owensboro, KY
Dr. Maheera Farsi-Morgan
DO
Lexington, KY
Compare MOHS-Micrographic Surgery Physician 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 Kentucky medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby MOHS-Micrographic Surgery Physician 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.
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Frequently Asked Questions
What is John Buker, M.D.'s specialty? ▼
John Buker, M.D. specializes in MOHS-Micrographic Surgery Physician and practices in Lexington, Kentucky. Credentials: M.D..
How much does John Buker, M.D. prescribe under Medicare Part D? ▼
In 2023, John Buker, M.D. wrote 33 Medicare Part D claims totaling $149K in drug costs for 12 beneficiaries.
What is John Buker, M.D.'s Medicare quality score? ▼
John Buker, M.D. has a CMS MIPS Final Score of 100/100 (Quality: 100). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is John Buker, M.D. located? ▼
John Buker, M.D. is located at 3475 RICHMOND RD, Lexington, KY, 40509. Phone: (859) 296-4400.
What is John Buker, M.D.'s NPI number? ▼
John Buker, M.D.'s National Provider Identifier (NPI) is 1457355174, issued on 06/10/2005.
Does John Buker, M.D. prescribe more brand-name or generic drugs? ▼
John Buker, M.D.'s prescribing is 61% brand-name and 39% generic drugs by claim count, with $149K in brand drug costs.
How many MOHS-Micrographic Surgery Physician providers are there in the US? ▼
There are 1,107 MOHS-Micrographic Surgery Physician providers across 52 states in the US. The average MOHS-Micrographic Surgery Physician provider writes 607 Medicare Part D claims per year.
What drugs does John Buker, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, John Buker, M.D.'s most frequently prescribed drugs include Erivedge. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does John Buker, M.D. accept Medicare? ▼
John Buker, M.D. appears in CMS Medicare data with 33 Part D claims and 12 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify John Buker, M.D.'s credentials? ▼
John Buker, M.D.'s NPI is 1457355174 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 (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.
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 May 2026.