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

Dr. Clifford G Williamson, MD

Individual provider Emergency Medicine Physician · NPI 1154562304

Dr. Clifford G Williamson, MD is a General Practice in Johnson City, Tennessee. Graduated from East Tennessee State University Quillen College of Medicine in 2009, 17 years ago. Practices with Southeastern Physician Services PC, a 598-clinician group and accepts Medicare assignment. Licensed in Tennessee and Virginia.

Years since qualifying
17
Trained at
East Tennessee State University Quillen College of Medicine
Licensed in
TN, VA
In the registry since
2009
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

325 N State Of Franklin Rd
Johnson City, TN 37604-6062
Phone: (423) 439-6283
Show map & directions

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

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence 52142 (TN)
Emergency Medicine Physician Taxonomy 207P00000X · Licence 0101282637 (VA)

Record details

NPI number1154562304
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 18, 2009
Last updated in NPPESApril 29, 2025
Certification dateApril 29, 2025

Medicare enrollment

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

Medicare specialtyGENERAL PRACTICE
Also practisesEMERGENCY MEDICINE
Medical schoolEAST TENNESSEE STATE UNIVERSITY QUILLEN COLLEGE OF MEDICINE
Graduated 2009 (17 years in practice)
Group practice Southeastern Physician Services Pc — 598 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

Other providers in Johnson City