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Ophthalmology

Kenneth J. Knudtson, MD

Works at hospitals in De Smet, SD · Brookings, SD · Hendricks, MN · South Dakota, Minnesota

Summary

Dr. Kenneth J. Knudtson, MD is an ophthalmologist at 300 22nd Ave, Brookings, SD 57006. Phone: (605) 692-6351. Accepts Medicare assignment. In 2024, Kenneth J. Knudtson had 899 Original Medicare patients and 1,511 services. NPI 1447234984. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

From official Medicare data

This page shows what Medicare's official clinician data says about Kenneth J. Knudtson, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Kenneth J. Knudtson accept Medicare assignment?
Yes. Medicare's clinician data says Kenneth J. Knudtson accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Kenneth J. Knudtson see?
In 2024, CMS data shows 899 Original Medicare patients and 1,511 services for Kenneth J. Knudtson. This counts Original Medicare only and measures volume, not quality.
What is Kenneth J. Knudtson's NPI number?
1447234984. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Kenneth J. Knudtson, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients899
Services billed to Medicare1,511
Different services or procedures28
Participating Medicare providerYes
Average age of these patients78

Most frequent services

  1. Established patient complete exam of visual system (92014)705 services
  2. Removal of cataract with insertion of prosthetic lens (66984)133 services
  3. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)126 services
  4. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)102 services
  5. Measurement of corneal curvature and depth of eye (92136)88 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High blood pressure75%
  • High cholesterol71%
  • Arthritis40%
  • Diabetes29%
  • Chronic kidney disease26%
  • Ischemic heart disease23%

Hospitals where Kenneth J. Knudtson works

Medicare's Facility Affiliation Data lists Kenneth J. Knudtson at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

Practice locations

Addresses where Kenneth J. Knudtson is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Kenneth J. Knudtson as a member of this group (CMS data updated October 2, 2026).

  • City of Brookings115 clinicians in the group

Specialties

Find other Ophthalmology doctors in South Dakota →

Other ophthalmologists in South Dakota

Clinicians with the same Medicare primary specialty in South Dakota — not a recommendation.

All ophthalmologists in South Dakota →

Other clinicians in City of Brookings

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Graduation year1995 (31 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1447234984
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians