NPI registry status
Active
2026 NPPES data Vascular & Interventional Radiology Physician NPI 1740623818 MD
Verify on CMS → Mark Johnson, MD
Vascular & Interventional Radiology Physician in Las Vegas, Nevada.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 3,004 in Vascular & Interventional Radiology 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
19
Medicare Part D claims · Vascular & Interventional Radiology Physician avg: 72
Industry payments
$945.8
10 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
Mark Johnson, MD filed 19 Medicare Part D claims in 2023 as a Vascular & Interventional Radiology Physician in Las Vegas, Nevada.
- 19
- Part D claims, 2023
- 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.
Mark Johnson, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
19 0th percentile higher than 0% of 1,370,886 prescribers
Each bar is a band; taller bars hold more prescribers. 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 Medicare Part D Prescriber Public Use File · 2023
✓
Board certification likely (heuristic, not verified)
Mark Johnson, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 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 Mark Johnson, MD?
Quality data not reportedPrimary specialty
Vascular & Interventional Radiology Physician
Medicare Part D claims
19 74% vs specialty avg
Specialty distribution in Nevada
How Vascular & Interventional Radiology Physician compares to other specialties among Nevada providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Vascular & Interventional Radiology Physician. Verify directly:
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).
Mark Johnson, MD appears in the CMS NPPES registry as a Vascular & Interventional Radiology Physician provider holding MD credentials at 2020 PALOMINO LN STE 100, Las Vegas, NV, 89106, with a listed phone of (702) 759-8600. NPI 1740623818 was issued on 04/09/2013.
Medicare Part D records for calendar year 2023 show 19 prescription claims written by this provider, covering N/A Medicare beneficiaries and totaling roughly $90 in drug spend.
Vascular & Interventional Radiology Physician is a narrow specialty nationwide, with 3,004 enrolled providers across 53 states and an average of 72 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 | 1740623818 |
|---|---|
| Specialty | Vascular & Interventional Radiology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 04/09/2013 |
Hospital and facility affiliations
Facilities where Mark Johnson, MD 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.
Kalispell Regional Medical Center Inc
Kalispell, MT
Northwest Imaging, PC
Kalispell, MT
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 Mark Johnson, MD. Source: openpaymentsdata.cms.gov.
Total received
$946
Largest payer
Medtronic, 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.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
19
Total Claims
$90
Total Drug Cost
N/A
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 21
- Total Day Supply
- 415
- Brand Drug Cost
- $0
- Generic Drug Cost
- $90
Patient Demographics
- Average Patient Age
- 69.1 years
- Avg HCC Risk Score
- 1.14
More Vascular & Interventional Radiology Physician in NV →
All providers in Nevada →
Compare specialties →
Vascular & Interventional Radiology Physician Overview
How Mark Johnson, MD fits within the Vascular & Interventional Radiology Physician landscape nationally.
3,004
Vascular & Interventional Radiology Physician Providers in US
53
States with Vascular & Interventional Radiology Physician
72
Avg Claims per Provider
Mark Johnson, MD's 19 claims are below the specialty average of 72.
Nearby Vascular & Interventional Radiology Physician Providers in Nevada
Other clinicians with the same primary specialty enrolled in Nevada, drawn from the same CMS NPPES roster as Johnson.
Dr. Farres Ahmed
M.D.
Carson City, NV
Dr. Thomas Barcia
MD
Reno, NV
Dr. Adam Bracha
M.D.
Reno, NV
Dr. Steven Davis
M.D.
Las Vegas, NV
Dr. Valerie Drnovsek
MD
Las Vegas, NV
Compare Vascular & Interventional Radiology 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 Nevada medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Vascular & Interventional Radiology 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.
Healthcare Guides
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Medical Specialties Explained
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Understanding Medicare Claims Data
What prescribing data reveals about a provider
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How insurance networks affect your costs
Telehealth Guide
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Explore Nevada
Frequently Asked Questions
What is Mark Johnson, MD's specialty? ▼
Mark Johnson, MD specializes in Vascular & Interventional Radiology Physician and practices in Las Vegas, Nevada. Credentials: MD.
How much does Mark Johnson, MD prescribe under Medicare Part D? ▼
In 2023, Mark Johnson, MD wrote 19 Medicare Part D claims totaling $90 in drug costs for N/A beneficiaries.
Where is Mark Johnson, MD located? ▼
Mark Johnson, MD is located at 2020 PALOMINO LN STE 100, Las Vegas, NV, 89106. Phone: (702) 759-8600.
What is Mark Johnson, MD's NPI number? ▼
Mark Johnson, MD's National Provider Identifier (NPI) is 1740623818, issued on 04/09/2013.
How many Vascular & Interventional Radiology Physician providers are there in the US? ▼
There are 3,004 Vascular & Interventional Radiology Physician providers across 53 states in the US. The average Vascular & Interventional Radiology Physician provider writes 72 Medicare Part D claims per year.
Does Mark Johnson, MD accept Medicare? ▼
Mark Johnson, MD appears in CMS Medicare data with 19 Part D claims and N/A Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Mark Johnson, MD's credentials? ▼
Mark Johnson, MD's NPI is 1740623818 with credentials MD. 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.
- 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.