Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Dr. Carl E Harder, OD

Individual provider Optometrist · NPI 1558635748

Dr. Carl E Harder, OD is registered under Optometry in Louisville, Kentucky. Qualified in 2006, 20 years ago. Practices with Ky Doctors of Optometry, PLLC, a 64-clinician group and accepts Medicare assignment. Licensed in Indiana and Kentucky.

Years since qualifying
20
Licensed in
IN, KY
In the registry since
2012
Specialties on file
3
What do these letters mean?
OD — Doctor of Optometry
An optometrist: examines eyes, prescribes glasses and contacts, and treats many eye conditions.

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Practice location Address checks out

6420 Dutchmans Pkwy
Louisville, KY 40205-3372 Not confirmed with CMS for 13 years — call before visiting
Phone: (502) 259-5026
Fax: (502) 259-7393
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Optometrist (primary) Taxonomy 152W00000X · Licence 1894DT (KY)
Optometrist Taxonomy 152W00000X · Licence 18003712A (IN)
Optometrist Taxonomy 152W00000X · Licence 18003712B (IN)

Record details

NPI number1558635748
Entity typeIndividual (Type 1)
GenderMale
Credentials OD
Sole proprietorYes
NPI enumeratedMarch 6, 2012
Last updated in NPPESSeptember 26, 2013

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyOPTOMETRY
Medical schoolOTHER
Graduated 2006 (20 years in practice)
Group practice Ky Doctors Of Optometry, Pllc — 64 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations6 on file with Medicare

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Cataract surgery 1–10 times

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients123
Services billed 1,485 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Colleagues at Ky Doctors of Optometry, PLLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 64 clinicians in the practice; 12 are shown here.

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