Our Staff


John Caleb Wallwork, M.D.

Dr. J. Caleb Wallwork is the principal healthcare provider at Workers' Health and Walk-In Clinic which was established in 1998.  He attended Vanderbilt University and is a graduate of Vanderbilt University Medical School.  He served as an Occupational Physician for TVA for eleven years and worked as an Emergency Room Physician for over twenty years.  He is a lifetime resident of Middle Tennessee.

He is a Certified Medical Examiner and is fully qualified to perform DOT Exams according to the new Federal Guidelines which went into effect in May 2014.

Kathryn L. Wallwork Kathryn L. Wallwork, Long time resident of Middle Tennessee. A graduate of Hillsboro High School and Vanderbilt University. Mother of five children. Drug Screen Collector Trainer. Breath Alcohol Technician Instructor. Office Manager.

Laurie Cartwright Laurie Cartwright, Started with Workers' Health in May 2012 as a Medical Assistant and Drug Screen Collector. Licensed Emergency Medical Technician/IV. Experience as an EMT/IV from 2002 to 2008. Enjoys working with people and patients.

Sandy Cummins Sandra Cummins, Licensed Practical Nurse. Grew up in Maury County, graduated from Central High School in 1966. Attended Sumner County Memorial School of Practical Nursing Dec. 1969 to Jan. 1970. Experience includes Maury Regional Hospital, Pediatric Office, Maury County Health Department, Nursing Home, American Red Cross and home health care. In 1983 started working at Donelson Hospital (later named Summit Medical Center) and retired in Dec. 2009.
Started with Workers' Health in June of 2011 and became a certified collector in August 2011.



Drug Screening


Monday - Friday 9 to 5

DOT Screening and Physician Appointments


Monday, Tues, Wed and Fri from 9 to 5

Services Available


Injury/Illness Treatment

Prompt Treatment

Communication With Employers

Ready Access to Specialists

Patient Tracking and Reporting


Physical Examinations

Post Offer




Substance Abuse Management

Drug Screening

Breath Alcohol

Drug Free Workplace

Medical Review Officer Services

Hair Testing


Additional On-Site Services


Back Strength Testing

Pulmonary Function Testing



FIT Testing

DNA Testing


By Arrangement


Nerve Conduction Testing

Physical Therapy

Bone densitometry