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Deliver quality preventative and urgent care via a well-equipped mobile unit to people in need throughout the Mountain Empire regardless of race, creed, color, sex, religious affiliation, or ability to pay.

Render this care in a Christian environment with the hope that unbelievers will ultimately be converted, believers will be invigorated, and local churches and communities will be strengthened.


Drs. Paul and Tim have been involved in Crossroads from its infancy, and grew out of their perception that many people were unable to access basic primary medical care. The mission's success for reaching the underserved has far exceed their expectations. They will be forever thankful and in awe of the support that the mission has received from the local community over the years.

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Tim Schwob, MD

Staff Physician

An Illinois native, Tim is a board-certified family physician. He received his medical degree from Ross University in 1983, and completed his residency training in family medicine at ETSU’s Bristol Family Medicine Residency Program in 1986. He has worked emergency medicine, private practice, and in urgent care in the Tri-Cities area. He is currently the medical director of Ballad Health’s urgent care clinics and their Telemedicine program, as well as a provider in both services.

He and his wife, Tammy, have been married since 1986. She works for a local respiratory care company, and is involved in children’s Sunday School. Their daughter, Alex, was recently married and lives in Texas with her husband Ryan.

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Katie Johnson

Family Nurse Practitioner

Katie was born in Wise VA, but grew up primarily in Kingsport, TN. She is certified as a Family Nurse Practitioner by the ANCC. She obtained her Masters Degree from ETSU, she has worked with Crossroads Medical Mission since.

She married her husband, Dale, in 2003. They have four children – Lily, Sam, Ella, and Oliver. 

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Jessica Herman

Family Nurse Practitioner

A native of Elizabethton, Tennessee, Jessica is certified as a Family Nurse Practitioner (FNP) through the American Academy of Nurse Practitioners. A graduate of E.T.S.U.’s FNP program, Jessica worked in the ICU at Sycamore Shoals Hospital and has been with Crossroads Medical Mission since June 2014. 

Jessica is an active member of Highlands Fellowship Church and volunteered with Crossroads Medical Mission at Highlands Fellowship before joining our staff.

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Paul Derden, MD

Staff Physician

Paul is a board-certified family physician who received his MD from the University of Texas Health Science Center at San Antonio in 1982. After he completing his residency in family medicine in Bristol, TN, he and his wife decided to to make this area their home.

Over the years since then Paul has worked in academia, emergency medicine, family medicine, urgent care, and occupational health, basically embodying the theme of “jack of all trades, master of nothing." He is currently the medical director for Johnson City’s Employee Health Clinic.

His wife, Jaymie, retired to grandmotherhood after careers more recently as director of the children and family ministries at State Street UMC in Bristol, VA.

Their daughter, Bethany, works as a behavioral analyst in the area. Their son, Jonathan, is a commercial airline pilot.

Cindy  Rockett

Executive Director

Her license plate reads “Rockett Power” which may be only a slight exaggeration.  Cindy Rockett is unable to leap buildings in a single bound, but she IS able to drive a 43’ mobile medical clinic through the mountains of Virginia and Tennessee!

As the original and only executive director of Crossroads Medical Mission, the “Doctors’ Office on Wheels,” Cindy was named Health Care Community Hero by the Tri-Cities Business Journal and was featured in the Tri-Cities Emerging Power Series by the Bristol Herald Courier, in which they “spotlighted some of the most energetic, hardworking, influential and successful women in all areas of life across the Mountain Empire.” Cindy’s recent Master’s degree capstone project focused upon building social capital in the Mountain Empire through Crossroads Medical Mission’s corps of volunteers.


Cindy’s leadership has brought Crossroads Medical Mission from the financial abyss of having less than two month’s operating funds to a point of ongoing sustainability.  She is hands-on in her approach with volunteers, patients and contributors alike.  Proud of the staff, volunteers and the communities in which Crossroads Medical Mission provides health care services, Cindy plans to continue with the unique approach to providing health care to folks in need.

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Sara Overbeck

Clinic Manager

After living in Kingsport for 10 years, Sara moved back to Bristol in April with her husband Kevin and wild-child of a toddler, Bailey. Sara is a 200-hour certified yoga & mindfulness teacher who enjoys meditation, spending time outside with the family, and nerding out on nutrition sciences.

Caroline Hawkins

Patient Resource Specialist and Community Health Worker

Born in Abingdon, VA, Caroline is a recent graduate of King University. After volunteering with Crossroads for a year, Caroline was excited to become a part of the staff! When not working, Caroline enjoys catching up on books and tv, crafting, seeing friends, and spending time with her dog Genevieve

Erin Faust

Secret Agent

Erin grew up  in Mendota, Virginia. She has been with Crossroads since 2010. Prior to working with CMM, Erin worked in commercial & industrial heating and air conditioning in sales and management before moving into her most important job of  Mom. 

Erin is married to her high school sweetheart, Matt, and is mom to Nate and Reagan. She is also mom to her two shepherd dogs, Sid and Dean, and her sweet lop eared bunny, Rufus.


At Crossroads, no one stands alone.

Thanks for submitting!


Medical Mission

Tel: 276-466-1600

Fax: 276-466-2800

P.O. Box 16852

Bristol, VA  24209-6852

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