2026 NPPES data Interventional Cardiology Physician NPI 1235558339 MD
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GUDJON KARLSSON, MD

Interventional Cardiology Physician in HUNTINGTON, West Virginia. 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
5K
Medicare Part D claims · 752 beneficiaries · Interventional Cardiology Physician avg: 3K
Generic prescribing
89%
generic claims · 11% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$146.68
12 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: GUDJON KARLSSON, MD is a Interventional Cardiology Physician ([object Object]) practicing in HUNTINGTON, West Virginia with a Medicare Part D prescribing footprint of 5K claims across 752 beneficiaries — 11% brand-name prescribing . Industry payments of $146.68 across 12 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: GUDJON KARLSSON, MD filed 4,821 Medicare Part D claims in 2023 across HUNTINGTON, West Virginia. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board-eligible specialty (heuristic — not verified)

GUDJON KARLSSON, MD practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).

GUDJON KARLSSON, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 04/16/2014

NPI 1235558339

Primary specialty

Interventional Cardiology Physician

Niche

3,382 US NPIs in this specialty

Medicare Part D claims

4,821 62% vs specialty avg

2023 prescription claims

Specialty avg: 2,984

Specialty distribution in West Virginia

How Interventional Cardiology Physician compares to other specialties among West Virginia providers

West Virginia providers

Interventional Cardiology Physician share within West Virginia

1. Interventional Cardiology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Interventional Cardiology Physician share within West Virginia

Specialty board-certification context

Estimated specialty board-certified rate — Interventional Cardiology Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Interventional Cardiology Physician ABMS/AOA estimate

Est. board-certified rate (Interventional Cardiology Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Interventional Cardiology Physician) — ABMS / AOA estimate

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).

GUDJON KARLSSON, MD is a Interventional Cardiology Physician provider practicing in HUNTINGTON, West Virginia, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1235558339. 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.

GUDJON KARLSSON, MD appears in the CMS NPPES registry as a Interventional Cardiology Physician provider holding MD credentials at 5170 US ROUTE 60, HUNTINGTON, WV, 25705, with a listed phone of (304) 528-4600. NPI 1235558339 was issued on 04/16/2014. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what KARLSSON 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 4,821 prescription claims written by this provider, covering 752 Medicare beneficiaries and totaling roughly $556K in drug spend, split 11% brand-name and 89% 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.

Interventional Cardiology Physician is a narrow specialty nationwide, with 3,382 enrolled providers across 53 states and an average of 2,984 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

5170 US ROUTE 60
HUNTINGTON, WV 25705

Provider Details

NPI 1235558339
Specialty Interventional Cardiology Physician
Credentials MD
Gender Male
NPI Issued 04/16/2014

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 GUDJON KARLSSON, MD. Source: openpaymentsdata.cms.gov.

Total received

$147

Largest payer

CVRx, 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

GUDJON KARLSSON, MD — brand share 11.0%
Specialty average (est.)

11% brand-name claims vs 89% generic, on 4,821 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.

4,821
Total Claims
$556K
Total Drug Cost
752
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
12,465
Total Day Supply
372,232
Brand vs Generic
11% brand / 89% generic
Brand Drug Cost
$482K
Generic Drug Cost
$75K

Patient Demographics

Average Patient Age
74.8 years
Avg HCC Risk Score
1.58
Gender Split
42% female / 58% male
Age Distribution
<65: 74, 65-74: 284, 75-84: 310, 85+: 84

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Metoprolol Succinate
659
Clopidogrel
Clopidogrel Bisulfate
504
Atorvastatin Calcium
416
Isosorbide Mononitrate Er
Isosorbide Mononitrate
390
Rosuvastatin Calcium
339
Lisinopril
190
Metoprolol Tartrate
190
Furosemide
182
Amlodipine Besylate
176
Carvedilol
160

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

Interventional Cardiology Physician Overview

How GUDJON KARLSSON, MD fits within the Interventional Cardiology Physician landscape nationally.

3,382
Interventional Cardiology Physician Providers in US
53
States with Interventional Cardiology Physician
2,984
Avg Claims per Provider

GUDJON KARLSSON, MD's 4,821 claims are above the specialty average of 2,984.

Nearby Interventional Cardiology Physician Providers in West Virginia

Other clinicians with the same primary specialty enrolled in West Virginia, drawn from the same CMS NPPES roster as KARLSSON.

Compare Interventional Cardiology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is GUDJON KARLSSON, MD's specialty?
GUDJON KARLSSON, MD specializes in Interventional Cardiology Physician and practices in HUNTINGTON, West Virginia. Credentials: MD.
How much does GUDJON KARLSSON, MD prescribe under Medicare Part D?
In 2023, GUDJON KARLSSON, MD wrote 4,821 Medicare Part D claims totaling $556K in drug costs for 752 beneficiaries.
Where is GUDJON KARLSSON, MD located?
GUDJON KARLSSON, MD is located at 5170 US ROUTE 60, HUNTINGTON, WV, 25705. Phone: (304) 528-4600.
What is GUDJON KARLSSON, MD's NPI number?
GUDJON KARLSSON, MD's National Provider Identifier (NPI) is 1235558339, issued on 04/16/2014.
Does GUDJON KARLSSON, MD prescribe more brand-name or generic drugs?
GUDJON KARLSSON, MD's prescribing is 11% brand-name and 89% generic drugs by claim count, with $482K in brand drug costs.
How many Interventional Cardiology Physician providers are there in the US?
There are 3,382 Interventional Cardiology Physician providers across 53 states in the US. The average Interventional Cardiology Physician provider writes 2,984 Medicare Part D claims per year.
What drugs does GUDJON KARLSSON, MD prescribe most often?
Based on 2023 Medicare Part D data, GUDJON KARLSSON, MD's most frequently prescribed drugs include Metoprolol Succinate, Clopidogrel, Atorvastatin Calcium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does GUDJON KARLSSON, MD accept Medicare?
GUDJON KARLSSON, MD appears in CMS Medicare data with 4,821 Part D claims and 752 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify GUDJON KARLSSON, MD's credentials?
GUDJON KARLSSON, MD's NPI is 1235558339 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

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