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

Dr. William Caswell Arnold, MD

Individual provider Sleep Medicine (Internal Medicine) Physician · NPI 1720407018

Dr. William Caswell Arnold, MD is an Internal Medicine in West Liberty, Kentucky. Graduated from University of Kentucky College of Medicine in 2014, 12 years ago. Practices with Southeastern Emergency Physicians LLC, a 786-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in Kentucky.

Years since qualifying
12
Trained at
University of Kentucky College of Medicine
Licensed in
KY
In the registry since
2014
Specialties on file
4
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

476 Liberty Rd
West Liberty, KY 41472-2049
Phone: (606) 743-3186
Show map & directions

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

Additional practice locations (2)

  • 186 Brenna Blvd, Salyersville, KY 41465-7524 — (606) 349-3800
  • 1084 Highway 7 Ste 2, West Liberty, KY 41472-7146 — (606) 743-3065

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 51794 (KY)
Sleep Medicine (Internal Medicine) Physician Taxonomy 207RS0012X · Licence 51794 (KY)
Hospitalist Physician Taxonomy 208M00000X · Licence 51794 (KY)
Emergency Medicine Physician Taxonomy 207P00000X · Licence 51794 (KY)

Record details

NPI number1720407018
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedApril 15, 2014
Last updated in NPPESJuly 30, 2026
Certification dateJuly 30, 2026

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Also practisesSLEEP MEDICINE
Medical schoolUNIVERSITY OF KENTUCKY COLLEGE OF MEDICINE
Graduated 2014 (12 years in practice)
Group practice Southeastern Emergency Physicians Llc — 786 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare