About Us

Proudly serving Oak Ridge and surrounding communities

Our Story

Oak Ridge Pediatrics provides a wide range of high-quality primary care services. We are committed to the health care of children and adolescents in Oak Ridge and surrounding communities.

We continue the legacy of Dr. Lewis F. Preston who was medical officer in the army. Dr. Preston came to Oak Ridge in 1943 during the Manhattan Project to establish his practice.

Our physicians, nurse practitioners, and staff are involved in many local community service activities. Do not be surprised when you see us not wearing scrubs!

If you want caring, compassionate staff and doctors who always strive to do the right thing, then schedule an appointment for your child. You will notice that our providers enjoying working together. We treat each other like family as we see patients, educate parents, and empower families to make good decisions in their lives.

We would be delighted to welcome you into our family.

Our Story

Oak Ridge Pediatrics provides a wide range of high-quality primary care services. We are committed to the health care of children and adolescents  in Oak Ridge and surrounding communities.

Our physicians, nurse practitioners, and staff are involved in many local community service activities. Do not be surprised when you see us not wearing scrubs!

If you want caring, compassionate staff and doctors who always strive to do the right thing, then schedule an appointment for your child. You will notice that our providers enjoying working together. We treat each other like family as we see patients, educate parents, and empower families to make good decisions in their lives.

We would be delighted to welcome you into our family.

Meet Our Providers

Our team is committed to helping your kids stay healthy and reach their full potential. We invite you to get to know our providers and learn why they enjoy practicing medicine.

Thomas L. Clary, M.D.

From my earliest memories I have always wanted to be a pediatrician. My own pediatrician, Dr. Lewis Preston, eventually became my father-in-law, and he was a great mentor and role model. I was fortunate to join him and practice with him for more than twenty years. I have been in practice long enough that I now see the children and even grandchildren of my original patients. It is quite humbling to have someone entrust you with the health care of their children, which are the most precious things in their lives.

  • Undergraduate: University of Tennessee, Knoxville, Tenn.
  • Medical School: East Tennessee State University, Johnson City, Tenn.
  • Residency: Emory University School of Medicine, Atlanta, Ga., Pediatrics
  • Certifications & Memberships: American Board of Pediatrics, East Tennessee Children’s Hospital medical staff, Methodist Medical Center medical staff, Partners in Pediatrics

I enjoy reading, working on antique cars, riding motorcycles, staying active in my church and several community service organizations and being with my wife, children, and grandchildren.

Frances Pisano, M.D.

My profession puts me in the position to empower and serve patients and their families. I enjoy getting to know families and their children while giving my patients the attentive care they deserve. I am very proud of our Oak Ridge Pediatrics staff and providers. Practicing medicine is a lot more satisfying when you’re surrounded with people whom you can count on.

  • Undergraduate: Brown University, Providence, R.I.
  • Medical School: Medical College of Pennsylvania, Philadelphia, Pa.
  • Residency: State University of New York,  Syracuse, N.Y., Pediatrics
  • Certifications & Memberships: American Board of Pediatrics, East Tennessee Children’s Hospital medical staff, Methodist Medical Center medical staff, Partners in Pediatrics

My interests include being outside, birding, hiking, trying to stay in shape, visiting friends and family, cooking, reading and gardening. 

Paul Barongan, M.D., F.A.A.P.

Watching my parents practice internal medicine in rural southwest Virginia, I had the opportunity to see the difference they made in their patients’ lives. I also wanted a career that would have a positive impact in my community and allow me to pursue my interests in science and math.  I enjoy the relationships that I have established with our families over the years.  Watching my patients grow up, and later entrust their own children to my care, has been one of the most satisfying aspects of my career.

  • Undergraduate: University of Virginia, Charlottesville, Va.
  • Medical School: Virginia Commonwealth University, Richmond, Va.
  • Residency: University of Tennessee Medical Center, Knoxville, Tenn., Pediatrics
  • Certifications & Memberships: American Board of Pediatrics, East Tennessee Children’s Hospital medical staff, Partners in Pediatrics

When I’m not playing piano, guitar or violin, I enjoy spending time with my family, watching musicals and going to sporting events. I am also known for having a major sweet tooth. 

Daphne Maples McColl, M.D.

I have an interest in science and a desire to help people. I studied medicine because it enabled me to combine the two. I sincerely enjoy helping patients and spending time with their families.

  • Undergraduate: The University of Tennessee, Knoxville, Tenn.
  • Medical School: University of Tennessee College of Medicine, Memphis, Tenn.
  • Residency: University of Tennessee Medical Center, Knoxville, Tenn., Pediatrics
  • Certifications & Memberships: American Board of Pediatrics, East Tennessee Children’s Hospital medical staff, Methodist Medical Center medical staff, Partners in Pediatrics

When I am not working, I spend time with my husband and our two teenage children, with our dogs or reading.

Matthew McCAllister, M.D.

I went into medicine because of the opportunities it provides to be part of a community and help others in difficult times. Oak Ridge Pediatric Clinic has been fortunate enough to take care of generations of families in the area, and I share that commitment to excellent care for my patients. What I enjoy most about my job is getting to know the families and talking to the kids, as well as sports medicine and treating athletes.

  • Undergraduate: Lipscomb University, Nashville, Tenn.
  • Medical School: University of Tennessee College of Medicine, Memphis, Tenn.
  • Residency: Eastern Virginia Medical School, Norfolk, Va., Pediatrics
  • Fellowship: University Hospitals Case Medical Center, Cleveland, Ohio, Primary Care Sports Medicine 
  • Certifications & Memberships: American Board of Pediatrics, Certification of Added Qualifications- Sports Medicine, East Tennessee Children’s Hospital medical staff, Methodist Medical Center medical staff, Partners in Pediatrics

When not in the office, I spend my time hiking, jogging, reading, watching movies (Star Wars and Indiana Jones are favorites), watching UT sports and the Cleveland Browns, traveling (especially to national parks) and spending time with my wife Emily and our dog Oliver.

Samantha Pollard, M.D.

  • Undergraduate: East Tennessee State University, Johnson City, Tenn.
  • Medical School: University of Tennessee College of Medicine, Memphis, Tenn.
  • Residency: Children’s Hospital of Virginia at Virginia Commonwealth University, Richmond, Va., Pediatrics 
  • Certifications & Memberships: American Board of Pediatrics, East Tennessee Children’s Hospital medical staff, Methodist Medical Center medical staff, Partners in Pediatrics

Sarah E. Eriksen, M.D.

I went into medicine so that I could travel to other countries and take care of people who do not have access to health care or doctors. For me, medicine is a unique way to provide love and care for people in all communities. As far as my East Tennessee community goes, I particularly love seeing breastfeeding families in the newborn period. I am very committed to helping mothers be successful in meeting their goals for nursing. I have two children of my own, James and Georgia, and I can very much relate to the desire to take care of one’s family!

  • Undergraduate: Furman University, Greenville, S.C.
  • Medical School: Medical College of Georgia, Augusta, Ga. 
  • Residency: Greenville Health System, Greenville, S.C., Pediatrics
  • Certifications & Memberships: American Board of Pediatrics, East Tennessee Children’s Hospital medical staff, Partners in Pediatrics

When I am not seeing patients, I spend time with my husband Bryan and our kids. Some of my favorite things are sunny days, good exercise, fresh flowers and ice cream

Amy D. Wolz, C.P.N.P.

I have always been drawn to the sciences and to health and well-being in particular; medicine was obviously a natural fit. It is very fulfilling to watch children grow up healthy and strong. I often get to see my former patients’ children being born and growing up. Oak Ridge Pediatrics has been a part of the community for decades and I like contributing to that legacy.

  • BSN, University of Tennessee, Knoxville, Tenn.
  • MSN, University of Tennessee, Knoxville, Tenn.
  • Certifications & Memberships : Certified Pediatric Nurse Practitioner, American Nurses Credentialing Center, Registered Nurse, Advanced Practice Nurse, Partners In Pediatrics

In my free time I spend time with my husband, read and hike when possible. I am also known for being my grandchildren’s biggest fan!

Karen Wilkinson, C.P.N.P.

I went into medicine because I am very interested in the science of the human body and I also enjoy helping others. I appreciate the trust that parents and children place in me and my colleagues. We do our very best to help our patients lead healthy lives and the occasional hug or piece of artwork from a healthy, smiling kid makes my day.

  • BSN, University of Tennessee, Knoxville, Tenn.
  • MSN, University of Tennessee, Knoxville, Tenn.
  • Certifications & Memberships: Certified Pediatric Nurse Practitioner, Board Certified, Primary Care Pediatric Mental Health Specialist, Partners in Pediatrics

When I am not at the clinic, I enjoy spending time with my family and our pets, reading, traveling to new places, historical research and eating good food. 

Mary Cathey, C.P.N.P.

I wanted a career where I could makes other people’s lives better. Pediatric medicine has given me that opportunity! I enjoy helping people and supporting them during their times of need. I also enjoy getting to know my patients and hearing about the good things going on in their lives. In my sixteen years of practice, I have watched my patients mature into smart, strong, well-rounded adults and start having children of their own.

  • BSN, University of Wisconsin, Madison, Wis.
  • MSN, University of Tennessee, Knoxville, Tenn.
  • Certifications & Memberships: Certified Pediatric Nurse Practitioner, Pediatric Nursing Certification Board, Registered Nurse, Advanced Practice Nurse, Induction into Sigma Theta Tau, International Nursing Honor Society, Partners In Pediatrics

I am passionate about challenging myself, constantly learning new things, running, biking, kayaking with my husband and two daughters, cooking, baking (lots of chocolate chip cookies), leading Girl Scouts and helping out with our church youth group.