10-Digit Dialing Now in Effect for 423 Area Code

Effective Aug. 5, 2025, callers must dial 10 digits (area code + telephone number) for all calls in the 423 area code as a result of a mandate from the Tennessee Public Utility Commission. After Aug. 5, failure to dial the full digit number will result in an error message.

Please be sure to dial 423 before the telephone number if you are trying to reach the following Covenant Health locations:

• Claiborne Medical Center (including outpatient locations)
  • Claiborne Breast Center
  • Claiborne Cardiopulmonary Rehabilitation
  • Claiborne Heart Center
  • Covenant Health Therapy Center – Tazewell
• Claiborne Health and Rehabilitation Center
• Morristown-Hamblen Healthcare System (including outpatient locations)
  • Ambulatory Surgery Center
  • Covenant Health Therapy Center – Morristown
  • Morristown-Hamblen Cardiopulmonary Rehabilitation
  • Morristown Regional Cancer Center
  • Morristown-Hamblen West
  • Morristown-Hamblen West Breast Center
  • Morristown-Hamblen West Diagnostic Center
  • Women’s Care Center at Morristown-Hamblen Healthcare System
  • Wound Care and Hyperbaric Medicine Center
• Claiborne Primary Care
• Fort Sanders Neurosurgery and Spine – Morristown
• Fort Sanders Women’s Specialists – Hamblen County
• Hamblen Primary Care
• Hamblen Urology Clinic
• Heartland Primary Care
• Knoxville Heart Group – Jefferson City
• Knoxville Heart Group – Morristown
• Knoxville Heart Group – Tazewell
• Prompt Family Care South
• Surgical Associates of East Tennessee
• Surgical Associates of East Tennessee – Breast Center
• Thompson Oncology Group – Morristown

If you continue to have problems reaching one of the above locations after completing 10-digit dialing, please contact our Customer Care Center at 865-374-0411.