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

Ronald Lee Johnson Sr., MD

Individual provider Internal Medicine Physician · NPI 1467487686

Ronald Lee Johnson Sr., MD is an Internal Medicine Physician in Columbia, South Carolina. Practices as a sole proprietor. Licensed in South Carolina.

Licensed in
SC
In the registry since
2006
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 Address checks out

4100 Main St Ste 201
Columbia, SC 29203-5800
Phone: (803) 786-0980
Fax: (803) 786-6452
Show map & directions

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

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 10556 (SC)
Endocrinology, Diabetes & Metabolism Physician Taxonomy 207RE0101X · Licence 10556 (SC)

Record details

NPI number1467487686
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJuly 12, 2006
Last updated in NPPESOctober 1, 2013

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