Clark W. Antonson, MD
Gastroenterology Physician · Lincoln, NE
Clark W. Antonson, MD is a gastroenterology physician with a practice address in Lincoln, Nebraska, and NPI 1831182757, issued on Aug 25, 2005. Check the license (Nebraska 17282, as entered in NPPES) on the Nebraska Board of Medicine and Surgery; the Medicare figures below come from public CMS files.
- Name
- Clark W. Antonson
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 17282 NE
Self-reported in NPPES; status is on the state search - Practice location
- 4545 R St, Lincoln, NE 68503
- Phone
- (402) 465-4545
- Enumerated
- Aug 25, 2005
- Record last updated
- Jan 27, 2025
- Fax
- (402) 465-3621
- Medicare enrollment
- Enrolled (PECOS I20041020001337); accepts Medicare assignment
- Medical or professional school
- University Of Nebraska College Of Medicine, 1985
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 88 in Nebraska → Look up another NPI →
Also registered at 4545 R St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Samantha Arnett, APRNNurse Practitioner1083400832
- Catherine Bateman, PAPhysician Assistant1003899949
- Erik Bowman, MDGastroenterology Physician1942434659
- Megan BurkleNurse Practitioner1457198665
- Andrew Coen, MDGastroenterology Physician1346234440
- Mark Griffin, MDSpecialist1164416251
Verify Clark W. Antonson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNebraska Board of Medicine and Surgery
Search for license 17282Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
58% more Medicare Part D claims than the average gastroenterology physician in 2024
1,278 Medicare Part D claims for 599 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 19% of claims.
Most prescribed
- Sod Sulf-Potass Sulf-Mag Sulf337 claims
- Pantoprazole Sodium201 claims
- Omeprazole185 claims
- Azathioprine46 claims
- Peg-3350 And Electrolytes33 claims
- Gavilyte-G31 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 100 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $1,622.58
24 payments; by number, the most common kind was food and beverage; the largest payer was Boston Scientific Corporation. The 13,350 providers of this specialty with any payment received $5,015.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Gastroenterology Specialties PCLincoln, NE
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Clark W. Antonson among 88 gastroenterology physician records in Nebraska
Clark W. Antonson, MD is one of 88 gastroenterology physician records with a practice address in Nebraska. 86% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 93% newer
- In a Medicare fileYes · 86% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated1985 · median 2004 among the 65 with a school on file
- Record last updated2025 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a Nebraska practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Nebraska
There are 88 gastroenterology physician records in Nebraska.
All 88 in Nebraska → Every provider in Lincoln → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Erik Bowman, MDLincoln, NE 685031942434659
- Andrew Coen, MDLincoln, NE 685031346234440
- Matthew Hrnicek, MDLincoln, NE 685031063406015
- Sally Knooihuizen, MDLincoln, NE 685031164943171
- William Lawton, M.D.Lincoln, NE 685031679776561
- David Newton, M.D.Lincoln, NE 685031073757217
- Christopher Rife, M.D.Lincoln, NE 685031699935536
- James Roat, M.D.Lincoln, NE 685031275826901
Common questions
What is Clark W. Antonson, MD's NPI number?
Clark W. Antonson, MD's National Provider Identifier (NPI) is 1831182757, issued on Aug 25, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Clark W. Antonson, MD located?
The NPPES record lists a practice address at 4545 R St, Lincoln, NE, 68503. Phone: (402) 465-4545. Providers update this record themselves, so call before visiting.
How can I verify Clark W. Antonson, MD's license?
NPPES lists Nebraska license number 17282, as entered by the provider. Search the Nebraska Board of Medicine and Surgery at https://www.nebraska.gov/LISSearch/search.cgi. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Clark W. Antonson, MD prescribe under Medicare Part D?
In 2024, Clark W. Antonson, MD had 1,278 Medicare Part D claims for 599 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is Clark W. Antonson, MD's MIPS final score?
The 2023 MIPS final score is 100 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.