Dennis Roy Vannatta, O.D.
Optometrist · Sioux City, IA
Dennis Roy Vannatta, O.D. is an optometrist with a practice address in Sioux City, Iowa, and NPI 1144212358, issued on Aug 16, 2005. Check the license (Iowa IA1725, as entered in NPPES) with the Iowa board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Dennis Roy Vannatta
- Credential
- O.D.
- Primary taxonomy
- Optometrist 152W00000X
- License number
- IA1725 IA
Self-reported in NPPES; status is on the state search - Practice location
- 4600 Singing Hills Blvd, Sioux City, IA 51106
- Phone
- (712) 271-4600
- Enumerated
- Aug 16, 2005
- Record last updated
- Jul 13, 2026
- Fax
- (712) 271-4604
- Medicaid IDs
- 3214791 IA
2214791 IA - Medicare enrollment
- Enrolled (PECOS I20100518000466); accepts Medicare assignment
- Medical or professional school
- Pacific University - College Of Optometry, 1976
- Entity
- Type 1 · individual
Also registered at 4600 Singing Hills Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Scott Beecher, O.D.Optometrist1841282050
- Angela Kolbo, O. D.Optometrist1053666800
- Katie RizkOptometrist1275451411
Verify Dennis Roy Vannatta in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Iowa board licenses this profession
Search for license IA1725Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
39% more Medicare Part D claims than the average optometrist in 2024
384 Medicare Part D claims for 73 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 23% of claims.
Most prescribed
- Latanoprost154 claims
- Timolol Maleate66 claims
- Brimonidine Tartrate45 claims
- Dorzolamide-Timolol36 claims
- Lumigan20 claims
- Neomycin-Polymyxin-Dexameth19 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 99.2 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $319.76
9 payments; by number, the most common kind was food and beverage; the largest payer was Bausch & Lomb Americas Inc. The 34,453 providers of this specialty with any payment received $769.99 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 2 group practices
- Kingsley Vision Center PCKingsley, IA
- Southern Hills Eye Care PCSioux City, IA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
22 optometrist records list a practice address in Sioux City
They are 22 of the 1,486 NPPES records with a practice address in Sioux City, and 676 optometrist records in Iowa.
All 22 in Sioux City → All 676 in Iowa → Every provider in Sioux City →
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 Dennis Roy Vannatta, O.D.'s NPI number?
Dennis Roy Vannatta, O.D.'s National Provider Identifier (NPI) is 1144212358, issued on Aug 16, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Dennis Roy Vannatta, O.D. located?
The NPPES record lists a practice address at 4600 Singing Hills Blvd, Sioux City, IA, 51106. Phone: (712) 271-4600. Providers update this record themselves, so call before visiting.
How can I verify Dennis Roy Vannatta, O.D.'s license?
NPPES lists Iowa license number IA1725, as entered by the provider. Search the Iowa board that licenses this profession; the NPPES record confirms identity only.
How much does Dennis Roy Vannatta, O.D. prescribe under Medicare Part D?
In 2024, Dennis Roy Vannatta, O.D. had 384 Medicare Part D claims for 73 beneficiaries; the average among optometrist prescribers was 277. Part D covers Medicare prescriptions only.
What is Dennis Roy Vannatta, O.D.'s MIPS final score?
The 2023 MIPS final score is 99.2 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.