Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Marilyn Kay Kosier, MD

Individual provider Specialist · NPI 1710169974

Dr. Marilyn Kay Kosier, MD is an Ophthalmology in Lancaster, Ohio. Graduated from Ohio State University College of Medicine in 1980, 46 years ago. Practices as a sole proprietor and accepts Medicare assignment. Licensed in Ohio.

Years since qualifying
46
Trained at
Ohio State University College of Medicine
Licensed in
OH
In the registry since
2007
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1520 Sheridan Dr
Lancaster, OH 43130-1303
Phone: (740) 654-0177
Fax: (740) 654-0505
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Ophthalmology Physician (primary) Taxonomy 207W00000X · Licence 35-056213 (OH)
Specialist Taxonomy 174400000X · Licence 35-05-6213K (OH)

Record details

NPI number1710169974
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorYes
NPI enumeratedNovember 29, 2007
Last updated in NPPESMay 15, 2020
Certification dateMay 15, 2020

Medicare enrollment

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

Medicare specialtyOPHTHALMOLOGY
Medical schoolOHIO STATE UNIVERSITY COLLEGE OF MEDICINE
Graduated 1980 (46 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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