Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Dana Lydell Day, OD

Individual provider Optometrist · NPI 1780689067

Dr. Dana Lydell Day, OD is registered under Optometry in Casper, Wyoming. Graduated from University Alabama Birmingham - School of Optometry in 1998, 28 years ago. Practices with Eye Institute of Wyoming, a 2-clinician group and accepts Medicare assignment. Licensed in Wyoming.

Years since qualifying
28
Trained at
University Alabama Birmingham - School of Optometry
Licensed in
WY
In the registry since
2005
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

301 S Fenway St Ste 102
Casper, WY 82601-3049 Not confirmed with CMS for 19 years — call before visiting
Phone: (307) 235-5384
Fax: (307) 265-7500
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Optometrist (primary) Taxonomy 152W00000X · Licence 260T (WY)

Record details

NPI number1780689067
Entity typeIndividual (Type 1)
GenderMale
Credentials OD
Sole proprietorNo
NPI enumeratedJune 14, 2005
Last updated in NPPESOctober 2, 2007

Medicare enrollment

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

Medicare specialtyOPTOMETRY
Medical schoolUNIVERSITY ALABAMA BIRMINGHAM - SCHOOL OF OPTOMETRY
Graduated 1998 (28 years in practice)
Group practice Eye Institute Of Wyoming — 2 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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 38 times · 58th percentile

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 patients622
Services billed 1,636 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 Eye Institute of Wyoming

Clinicians the CMS Doctors & Clinicians file lists under the same group practice.

Other providers in Casper