Meet our Resident Physicians

River Ridge Dermatology is committed to providing the best possible skin care. We stay at the forefront of medical developments, and are actively engaged in educating the next generation of dermatologists—working with them to incorporate the newest technologies and treatments into our practice.

That’s why we proudly participate in the LewisGale Hospital Montgomery Graduate Medical Education program. Having recently completed rigorous medical education programs, resident physicians bring innovative practices and methodologies to the field of dermatology and to our patients.

We look forward to working with them to expand our services and provide the best medical care.

Jared Brackenrich, D.O.

A photo of Dr. Jared Brackenrich

Edward Via College of Osteopathic Medicine (VCOM-VA)

Dr. Brackenrich is from Pembroke, Virginia, and attended medical school here in Blacksburg. He developed an early interest in dermatology while shadowing his father, a physician in Giles County. “I gravitated to skin issues and was intrigued by the way they present on different people and types of skin,” he says. Having the opportunity to develop long-term relationships with patients of all ages also attracted him to the specialty.

Fun fact about Dr. Brackenrich: He was a Virginia Tech cheerleader in college. Go Hokies!

Karla Guerra, D.O.

A photo of Dr. Karla Guerra

Campbell University School of Osteopathic Medicine

Dr. Guerra is from Santurce, Puerto Rico, and attended medical school in North Carolina. “I love that dermatology allows me to follow patients from the time they’re very young into older age,” she says. Dr. Guerra also enjoys the variety that practicing dermatology brings – from saving lives by removing melanoma with Mohs surgery to improving quality of life with acne treatment.

Fun fact about Dr. Guerra: She loves cooking arroz con gandules, a traditional Puerto Rican beans and rice dish, with her husband and son.

Tessa Mullins, D.O.

A photo of Dr. Tessa Mullins

Edward Via College of Osteopathic Medicine (VCOM-VA)

Dr. Mullins grew up in Big Stone Gap, Virginia, and attended medical school in Blacksburg. She decided to pursue a career in medicine after watching her brother go through the process, and because she enjoys meeting new people. “I love the patient population here and can really empathize with them, since I’m from the area,” she says. Dr. Mullins believes that communication and understanding a patient’s goals are critical to being a successful dermatologist.

Fun fact about Dr. Mullins: She played volleyball in college and has a goldendoodle.

Abby Russell, D.O.

A photo of Abby Russell

Edward Via College of Osteopathic Medicine (VCOM)

Dr. Russell is from Chattanooga, TN and attended medical school in Blacksburg. She decided to go into dermatology because she loves helping people treat skin conditions they don’t think can be improved. “Patients try all sorts of things at home to get rid of what they’re suffering from,” she says. “When they finally come to the dermatologist, they’re met with a variety of treatments they didn’t know were possible.”

Fun fact about Dr. Russell: She was a yoga teacher while she was in medical school. Power yoga is her favorite.

Samantha Sternad, D.O.

A photo of Dr. Samantha Sternad

Edward Via College of Osteopathic Medicine (VCOM-VA)

Dr. Sternad is from Delafield, Wisconsin and attended medical school in Blacksburg. She became interested in dermatology while in college when her mother was diagnosed with melanoma. She has seen the impact dermatology has had on people in her life and wants to help make a difference in others’ lives too. “I love that we can help people feel healthy, beautiful, and confident in their own skin,” she says.

Fun fact about Dr. Sternad: She worked as a financial analyst for a Fortune 500 company before starting medical school.

Amanda Johns, D.O.

A photo of Dr. Amanda Johns

Edward Via College of Osteopathic Medicine (VCOM-VA)

Dr. Johns hails from Charleston, West Virginia and attended medical school in Blacksburg. She was drawn to dermatology because of the variety of conditions and diseases that present on the skin. She also loves that dermatology allows her to feel close with her patients. “It is rewarding as a physician to be able to clear my patients’ skin, prevent skin cancer, or make a skin cancer diagnosis that could be life-saving.”

Fun fact about Dr. Johns: She is the first person in her family to become a doctor.