Kenneth J. Knudtson, MD
Ophthalmology Physician · Brookings, SD
Kenneth J. Knudtson, MD is an ophthalmology physician with a practice address in Brookings, South Dakota, and NPI 1447234984, issued on Nov 29, 2005. Check the license (South Dakota 4922, as entered in NPPES) on the South Dakota Board of Medical and Osteopathic Examiners; the Medicare figures below come from public CMS files.
- Name
- Kenneth J. Knudtson
- Credential
- MD
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- 4922 SD
Self-reported in NPPES; status is on the state search - Practice location
- 2311 Yorkshire Drive, Brookings, SD 57006
- Phone
- (605) 692-7315
- Enumerated
- Nov 29, 2005
- Record last updated
- Jul 1, 2009 (not updated in 17 years: call before relying on the address or phone)
- Fax
- (605) 692-2615
- Medicaid ID
- 6300590 SD
- Medicare enrollment
- Enrolled (PECOS I20041207000512); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 60 in South Dakota → Look up another NPI →
Also registered at 2311 Yorkshire Drive
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Brian Piearson, ODOptometrist1801870340
- Ronold Tesch, MDOphthalmology Physician1184608622
Verify Kenneth J. Knudtson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersSouth Dakota Board of Medical and Osteopathic Examiners
Search for license 4922Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
33% fewer Medicare Part D claims than the average ophthalmology physician in 2024
1,023 Medicare Part D claims for 195 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 25% of claims.
Most prescribed
- Latanoprost393 claims
- Timolol Maleate118 claims
- Prednisolone Acetate115 claims
- Ketorolac Tromethamine63 claims
- Moxifloxacin61 claims
- Dorzolamide-Timolol60 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.
Bills Medicare through one group practice
- City OF BrookingsBrookings, SD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Kenneth J. Knudtson among 60 ophthalmology physician records in South Dakota
Kenneth J. Knudtson, MD is one of 60 ophthalmology physician records with a practice address in South Dakota. 72% 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, 83% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1995 · median 2009 among the 38 with a school on file
- Record last updated2009 · 42% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207W00000X and a South Dakota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Ophthalmology Physician providers in South Dakota
There are 60 ophthalmology physician records in South Dakota.
All 60 in South Dakota → Every provider in Brookings → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Ronold Tesch, MDBrookings, SD 570061184608622
- Beth Bruening, M.D.Dakota Dunes, SD 570491467423517
- Karen Dickes, D.O.Yankton, SD 570781487851754
- Paula Hicks, M.D.Yankton, SD 570781407859341
- Trevor KindleYankton, SD 570781548794316
- Patrick King, M.D.Yankton, SD 570781487657334
- Ken Augspurger, MDSioux Falls, SD 571051942253919
- Hayley Klein, M.D.Sioux Falls, SD 571051871913467
Common questions
What is Kenneth J. Knudtson, MD's NPI number?
Kenneth J. Knudtson, MD's National Provider Identifier (NPI) is 1447234984, issued on Nov 29, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Kenneth J. Knudtson, MD located?
The NPPES record lists a practice address at 2311 Yorkshire Drive, Brookings, SD, 57006. Phone: (605) 692-7315. Providers update this record themselves, so call before visiting.
How can I verify Kenneth J. Knudtson, MD's license?
NPPES lists South Dakota license number 4922, as entered by the provider. Search the South Dakota Board of Medical and Osteopathic Examiners at https://www.sdbmoe.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Kenneth J. Knudtson, MD prescribe under Medicare Part D?
In 2024, Kenneth J. Knudtson, MD had 1,023 Medicare Part D claims for 195 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
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.