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

Mark S. Keisler, MD

Individual provider Ophthalmology Physician · NPI 1023159431

Mark S. Keisler, MD is an Ophthalmology in Lexington, South Carolina. Graduated from Medical University of South Carolina College of Medicine in 1979, 47 years ago. Practices with Palmetto Ophthalmology Associates PA, a 7-clinician group and accepts Medicare assignment. Licensed in South Carolina.

Years since qualifying
47
Trained at
Medical University of South Carolina College of Medicine
Licensed in
SC
In the registry since
2007
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

340 W Butler St
Lexington, SC 29072-2606
Phone: (803) 359-8777
Fax: (803) 359-1513
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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 11332 (SC)

Record details

NPI number1023159431
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 9, 2007
Last updated in NPPESJuly 8, 2007
Mailing address340 W Butler St, Lexington, SC 29072-2606

Medicare enrollment

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

Medicare specialtyOPHTHALMOLOGY
Medical schoolMEDICAL UNIVERSITY OF SOUTH CAROLINA COLLEGE OF MEDICINE
Graduated 1979 (47 years in practice)
Group practice Palmetto Ophthalmology Associates Pa — 7 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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