Carl E. Harder, O.D.
Optometrist · Louisville, KY
Carl E. Harder, O.D. is an optometrist with a practice address in Louisville, Kentucky, and NPI 1558635748, issued on Mar 6, 2012. Check the license (Kentucky 1894DT, as entered in NPPES) with the Kentucky board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Carl E. Harder
- Credential
- O.D.
- Primary taxonomy
- Optometrist 152W00000X
- License numbers
- 1894DT KY
18003712A IN
18003712B IN
Self-reported in NPPES; status is on the state search - Practice location
- 6420 Dutchmans Pkwy, Louisville, KY 40205
- Phone
- (502) 259-5026
- Enumerated
- Mar 6, 2012
- Record last updated
- Sep 26, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (502) 259-7393
- Medicare enrollment
- Enrolled (PECOS I20130829000323); accepts Medicare assignment
- Entity
- Type 1 · individual
Also registered at 6420 Dutchmans Pkwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Johanna Archer, M.D.Reproductive Endocrinology Physician1295796662
- Kenneth Balcombe, M.D.Otolaryngology Physician1720084262
- Brian Beanblossom, MDCardiovascular Disease Physician1548298433
Verify Carl E. Harder in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Kentucky board licenses this profession
Search for license 1894DTCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
27% more Medicare Part D claims than the average optometrist in 2024
352 Medicare Part D claims for 107 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 30% of claims.
Most prescribed
- Latanoprost98 claims
- Brimonidine Tartrate61 claims
- Timolol Maleate41 claims
- Prednisolone Acetate37 claims
- Combigan14 claims
- Restasis14 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: $423.79
9 payments; by number, the most common kind was food and beverage; the largest payer was Harrow Eye, LLC. 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 one group practice
- KY Doctors OF Optometry, PLLCLouisville, KY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Optometrist providers in Kentucky
There are 803 optometrist records in Kentucky.
Other optometrist records in Kentucky
- Thomas Abell, ODCampbellsville, KY1942833397
- Larry Abney, ODLeitchfield, KY1487646527
- John Adams, O.D.Owensboro, KY1730191602
- John Adams, O.D.Winchester, KY1497900070
- Kevin Adams, ODMurray, KY1184782609
- Mattie Adams, ODElizabethtown, KY1861064958
- Rebecca Adams, O.D.Louisville, KY1568080315
- Stefanie Adams, ODGeorgetown, KY1750669198
- Addy Adkisson, ODLouisville, KY1255181582
- Bilal Ahmad, O.D.Lexington, KY1003224809
Common questions
What is Carl E. Harder, O.D.'s NPI number?
Carl E. Harder, O.D.'s National Provider Identifier (NPI) is 1558635748, issued on Mar 6, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Carl E. Harder, O.D. located?
The NPPES record lists a practice address at 6420 Dutchmans Pkwy, Louisville, KY, 40205. Phone: (502) 259-5026. Providers update this record themselves, so call before visiting.
How can I verify Carl E. Harder, O.D.'s license?
NPPES lists Kentucky license number 1894DT, as entered by the provider. Search the Kentucky board that licenses this profession; the NPPES record confirms identity only.
How much does Carl E. Harder, O.D. prescribe under Medicare Part D?
In 2024, Carl E. Harder, O.D. had 352 Medicare Part D claims for 107 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.