Calvin William Daack, OD
Optometrist · Fort Madison, IA
Calvin William Daack, OD is an optometrist with a practice address in Fort Madison, Iowa, and NPI 1386319705, issued on Aug 9, 2021. Check the license (Iowa 108268, as entered in NPPES) with the Iowa board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Calvin William Daack
- Credential
- OD
- Primary taxonomy
- Optometrist 152W00000X
- License number
- 108268 IA
Self-reported in NPPES; status is on the state search - Practice location
- 619 10TH St, Fort Madison, IA 52627
- Phone
- (319) 372-5181
- Enumerated
- Aug 9, 2021
- Record last updated
- Aug 9, 2021 (not updated in 5 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest optometrist records → All 676 in Iowa → Look up another NPI →
Also registered at 619 10TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kristin Maus, O.D.Optometrist1295714145
Verify Calvin William Daack in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Iowa board licenses this profession
Search for license 108268Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
23% more Medicare Part D claims than the average optometrist in 2024
342 Medicare Part D claims for 72 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 27% of claims.
Most prescribed
- Latanoprost110 claims
- Timolol Maleate61 claims
- Brimonidine Tartrate60 claims
- Neomycin-Polymyxin-Dexameth20 claims
- Prednisolone Acetate13 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: $326.07
8 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.
Calvin William Daack among 676 optometrist records in Iowa
Calvin William Daack, OD is one of 676 optometrist records with a practice address in Iowa. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 91% of them.
- NPI issued2021 · 91% of these records are older, 6% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileNo · 68% of these records are
- Record last updated2021 · 74% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 152W00000X and a Iowa practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
6 optometrist records list a practice address in Fort Madison
They are 6 of the 118 NPPES records with a practice address in Fort Madison, and 676 optometrist records in Iowa.
All 676 in Iowa → Every provider in Fort Madison → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Kristin Maus, O.D.Fort Madison, IA 526271295714145
- Larry Peck, ODFort Madison, IA 526271730174129
- Carolyn Smith, O.D.Fort Madison, IA 526271578538245
- Larry Smith, O.D.Fort Madison, IA 526271023083326
- Derek Vogelpohl, O.D.Fort Madison, IA 526271073951612
- Ricky Greenfield, O.D.Keokuk, IA 526321124190343
- Steven Thibon, O.D.Keokuk, IA 526321295764934
- Megan Hangartner, O.D.Mt Pleasant, IA 526411619382058
Common questions
What is Calvin William Daack, OD's NPI number?
Calvin William Daack, OD's National Provider Identifier (NPI) is 1386319705, issued on Aug 9, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Calvin William Daack, OD located?
The NPPES record lists a practice address at 619 10TH St, Fort Madison, IA, 52627. Phone: (319) 372-5181. Providers update this record themselves, so call before visiting.
How can I verify Calvin William Daack, OD's license?
NPPES lists Iowa license number 108268, as entered by the provider. Search the Iowa board that licenses this profession; the NPPES record confirms identity only.
How much does Calvin William Daack, OD prescribe under Medicare Part D?
In 2024, Calvin William Daack, OD had 342 Medicare Part D claims for 72 beneficiaries; the average among optometrist prescribers was 277. 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.