Gregory Osmundson, M.D.
Glaucoma Specialist (Ophthalmology) Physician · Sioux Falls, SD
Gregory Osmundson, M.D. is a glaucoma specialist (ophthalmology) physician with a practice address in Sioux Falls, South Dakota, and NPI 1255391801, issued on Mar 27, 2006. Check the license (South Dakota 4573, as entered in NPPES) on the South Dakota Board of Medical and Osteopathic Examiners; the Medicare figures below come from public CMS files.
- Name
- Gregory Osmundson
- Credential
- M.D.
- Primary taxonomy
- Glaucoma Specialist (Ophthalmology) Physician 207WX0009X
- License number
- 4573 SD
Self-reported in NPPES; status is on the state search - Practice location
- 6601 S Minnesota Ave, Sioux Falls, SD 57108
- Phone
- (605) 336-6294
- Enumerated
- Mar 27, 2006
- Entity
- Type 1 · individual
Also registered at 6601 S Minnesota Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Elizabeth Atchison, M.D.Ophthalmology Physician1669738183
- Dustin Dierks, MDOphthalmology Physician1629057666
- Michael Eide, M.D.Ophthalmology Physician1710152061
- Darwin Gramstad, CRNACertified Registered Nurse Anesthetist1063401081
- Bryan Hammer, M.D.Ophthalmology Physician1992766026
- Byron Hohm, M.D.Ophthalmology Physician1780645887
Verify Gregory Osmundson 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 4573Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
65% fewer Medicare Part D claims than the average glaucoma specialist (ophthalmology) physician in 2024
1,053 Medicare Part D claims for 217 beneficiaries, against an average of 3,029 among the 359 providers of this specialty who prescribed in Part D. Brand-name drugs were 29% of claims.
Most prescribed
- Prednisolone Acetate255 claims
- Ketorolac Tromethamine253 claims
- Ofloxacin221 claims
- Latanoprost146 claims
- Dorzolamide-Timolol53 claims
- Brimonidine Tartrate38 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.
Industry payments in 2024: $1,035.45
10 payments, mostly food and beverage; the largest payer was Alcon Vision LLC. The 320 providers of this specialty with any payment received $3,836.54 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.
One hospital or facility affiliation
- Ophthalmology LtdMitchell, SD
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Glaucoma Specialist (Ophthalmology) Physician providers in South Dakota
There are 3 glaucoma specialist (ophthalmology) physician records in South Dakota.
Other glaucoma specialist (ophthalmology) physician records in South Dakota
- Monte Dirks, M.D.Rapid City, SD1760462642
- Adam Jorgensen, M.D.Rapid City, SD1366700460
Common questions
What is Gregory Osmundson, M.D.'s NPI number?
Gregory Osmundson, M.D.'s National Provider Identifier (NPI) is 1255391801, issued on Mar 27, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gregory Osmundson, M.D. located?
The NPPES record lists a practice address at 6601 S Minnesota Ave, Sioux Falls, SD, 57108. Phone: (605) 336-6294. Providers update this record themselves, so call before visiting.
How can I verify Gregory Osmundson, M.D.'s license?
NPPES lists South Dakota license number 4573, 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 Gregory Osmundson, M.D. prescribe under Medicare Part D?
In 2024, Gregory Osmundson, M.D. had 1,053 Medicare Part D claims for 217 beneficiaries; the average among glaucoma specialist (ophthalmology) physician prescribers was 3,029. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.