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

Keith Alexander Guest, MD

Individual provider Hospice and Palliative Medicine (Internal Medicine) Physician · NPI 1285630020

Keith Alexander Guest, MD is a Geriatric Medicine in Lexington, South Carolina. Graduated from University of South Carolina School of Medicine in 1996, 30 years ago. Practices with Senior Health Associates, PA, a 9-clinician group and accepts Medicare assignment. Licensed in South Carolina.

Years since qualifying
30
Trained at
University of South Carolina School of Medicine
Licensed in
SC
In the registry since
2005
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location PO Box

The provider listed a PO Box rather than a street location, so this is not a walk-in address.

PO Box 487
Lexington, SC 29071-0487
Phone: (803) 699-9073
Fax: (866) 527-0937
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Geriatric Medicine (Internal Medicine) Physician (primary) Taxonomy 207RG0300X · Licence 20934 (SC)
Hospice and Palliative Medicine (Internal Medicine) Physician Taxonomy 207RH0002X · Licence 20934 (SC)

Record details

NPI number1285630020
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 27, 2005
Last updated in NPPESJuly 21, 2025
Certification dateJuly 21, 2025

Medicare enrollment

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

Medicare specialtyGERIATRIC MEDICINE
Also practisesHOSPICE/PALLIATIVE CARE, INTERNAL MEDICINE
Medical schoolUNIVERSITY OF SOUTH CAROLINA SCHOOL OF MEDICINE
Graduated 1996 (30 years in practice)
Group practice Senior Health Associates, Pa — 9 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount