Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. Clark W Antonson, MD

Individual provider Specialist · NPI 1831182757

Dr. Clark W Antonson, MD is a Gastroenterology in Lincoln, Nebraska. Graduated from University of Nebraska College of Medicine in 1985, 41 years ago. Practices with Gastroenterology Specialties PC, a 51-clinician group and accepts Medicare assignment. Licensed in Nebraska.

Years since qualifying
41
Trained at
University of Nebraska College of Medicine
Licensed in
NE
In the registry since
2005
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

4545 R St
Lincoln, NE 68503-3723
Phone: (402) 465-4545
Fax: (402) 465-3621
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence 17282 (NE)
Specialist Taxonomy 174400000X · Licence 17282 (NE)

Record details

NPI number1831182757
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 25, 2005
Last updated in NPPESJanuary 27, 2025
Certification dateJanuary 27, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyGASTROENTEROLOGY
Medical schoolUNIVERSITY OF NEBRASKA COLLEGE OF MEDICINE
Graduated 1985 (41 years in practice)
Group practice Gastroenterology Specialties Pc — 51 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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