John Thomsen, OD
Optometrist · Corning, IA
John Thomsen, OD is an optometrist with a practice address in Corning, Iowa, and NPI 1205801941, issued on Feb 17, 2006. Check the license (Iowa 1938T, as entered in NPPES) with the Iowa board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- John Thomsen
- Credential
- OD
- Primary taxonomy
- Optometrist 152W00000X
- License number
- 1938T IA
Self-reported in NPPES; status is on the state search - Practice location
- 715 Davis Ave, Corning, IA 50841
- Phone
- (641) 322-3147
- Enumerated
- Feb 17, 2006
- Entity
- Type 1 · individual
Verify John Thomsen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Iowa board licenses this profession
Search for license 1938TCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
78% more Medicare Part D claims than the average optometrist in 2024
496 Medicare Part D claims for 98 beneficiaries, against an average of 279 among the 32,314 providers of this specialty who prescribed in Part D. Brand-name drugs were 23% of claims.
Most prescribed
- Latanoprost296 claims
- Timolol Maleate80 claims
- Prednisolone Acetate28 claims
- Brimonidine Tartrate26 claims
- Combigan11 claims
- Dorzolamide-Timolol11 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: $83.77
2 payments, mostly food and beverage; the largest payer was Alcon Vision LLC. The 33,561 providers of this specialty with any payment received $749.79 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
- Eye Care Associates OF CO LLCCreston, IA
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.
1 optometrist records list a Corning practice address
They are 1 of the 42 NPPES records with a Corning practice address, and 667 optometrist records in Iowa.
Other optometrist records in Iowa
- Ryan Ackerman, O.D.Rock Rapids, IA1770692311
- Katie Adams, ODWest Union, IA1710500251
- Paul Ahern, O.D.Dyersville, IA1104892116
- George Alberhasky, O.D., P.C.Iowa City, IA1013036425
- Troy Albrecht, ODMarion, IA1053392522
- Steven Aljets, O.D.West Des Moines, IA1790745602
- Daniel Alletto, ODCenterville, IA1043668700
- John Altfillisch, ODOttumwa, IA1154420172
- Mark Altfillisch, ODOttumwa, IA1093814014
- Jeffrey Anderson, O.D.Boone, IA1760466098
Common questions
What is John Thomsen, OD's NPI number?
John Thomsen, OD's National Provider Identifier (NPI) is 1205801941, issued on Feb 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Thomsen, OD located?
The NPPES record lists a practice address at 715 Davis Ave, Corning, IA, 50841. Phone: (641) 322-3147. Providers update this record themselves, so call before visiting.
How can I verify John Thomsen, OD's license?
NPPES lists Iowa license number 1938T, as entered by the provider. Search the Iowa board that licenses this profession; the NPPES record confirms identity only.
How much does John Thomsen, OD prescribe under Medicare Part D?
In 2024, John Thomsen, OD had 496 Medicare Part D claims for 98 beneficiaries; the average among optometrist prescribers was 279. 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.