Eric R. Thomas, M.D.
Ophthalmology Physician · Sioux Falls, SD
Eric R. Thomas, M.D. is an ophthalmology physician with a practice address in Sioux Falls, South Dakota, and NPI 1588636484, issued on Feb 3, 2006. Check the license (South Dakota 6006, as entered in NPPES) on the South Dakota Board of Medical and Osteopathic Examiners; the Medicare figures below come from public CMS files.
- Name
- Eric R. Thomas
- Credential
- M.D.
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- 6006 SD
Self-reported in NPPES; status is on the state search - Practice location
- 6601 S Minnesota Ave Ste 200, Sioux Falls, SD 57108
- Phone
- (605) 336-6294
- Enumerated
- Feb 3, 2006
- Record last updated
- Jul 5, 2026
- Fax
- (605) 336-0266
- Medicaid IDs
- 6300710 SD
46031185613 NE
542468000 MN - Medicare enrollment
- Enrolled (PECOS I20070501000064); accepts Medicare assignment
- Medical or professional school
- Sanford School Of Medicine Of University Of South Dakota, 2001
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 60 in South Dakota → Look up another NPI →
Also registered at 6601 S Minnesota Ave Ste 200
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Andrea Bordewyk, MDOphthalmology Physician1255829776
- Elizabeth Chiang, MD, PHDOphthalmology Physician1336464882
- Ryan Geraets, MDOphthalmology Physician1154441608
- Elise In't Veld, MDOphthalmology Physician1215279856
- Tyler VermeerOptometrist1801323118
- Emily Walters, O.D.Optometrist1609154608
Verify Eric R. Thomas 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 6006Check 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 ophthalmology physician in 2024
532 Medicare Part D claims for 173 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 35% of claims.
Most prescribed
- Prednisolone Acetate176 claims
- Atropine Sulfate160 claims
- Polymyxin B Sul-Trimethoprim140 claims
- Ofloxacin18 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: $401.28
11 payments; by number, the most common kind was food and beverage; the largest payer was Alimera Sciences, Inc. The 13,221 providers of this specialty with any payment received $4,535.02 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
- Ophthalmology LtdSioux Falls, SD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Eric R. Thomas among 60 ophthalmology physician records in South Dakota
Eric R. Thomas, M.D. 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 2006, is newer than 17% of them.
- NPI issued2006 · 17% of these records are older, 50% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2001 · median 2009 among the 38 with a school on file
- Record last updated2026 · 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 Sioux Falls → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Elizabeth Atchison, M.D.Sioux Falls, SD 571081669738183
- John Berdahl, M.D.Sioux Falls, SD 571081871761577
- Elizabeth Chiang, MD, PHDSioux Falls, SD 571081336464882
- Dustin Dierks, MDSioux Falls, SD 571081629057666
- Michael Eide, M.D.Sioux Falls, SD 571081710152061
- Ryan Geraets, MDSioux Falls, SD 571081154441608
- Bryan Hammer, M.D.Sioux Falls, SD 571081992766026
- Byron Hohm, M.D.Sioux Falls, SD 571081780645887
Common questions
What is Eric R. Thomas, M.D.'s NPI number?
Eric R. Thomas, M.D.'s National Provider Identifier (NPI) is 1588636484, issued on Feb 3, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Eric R. Thomas, M.D. located?
The NPPES record lists a practice address at 6601 S Minnesota Ave Ste 200, Sioux Falls, SD, 57108. Phone: (605) 336-6294. Providers update this record themselves, so call before visiting.
How can I verify Eric R. Thomas, M.D.'s license?
NPPES lists South Dakota license number 6006, 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 Eric R. Thomas, M.D. prescribe under Medicare Part D?
In 2024, Eric R. Thomas, M.D. had 532 Medicare Part D claims for 173 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.