Our Providers

Dr. Kimberly Lehman

Kimberly A. Lehman, DO, is a native of Pennsylvania and settled with her family in Clarksville, TN, in 2010.  Dr. Lehman earned her Bachelor of Science degree from the United States Military Academy at West Point and entered active duty military service for five years.  She then attended Lake Erie College of Osteopathic Medicine on a Health Professions Scholarship, where she earned her Doctor of Osteopathy degree.

Dr. Lehman was re-commissioned as a Captain in the Army and completed her internship training at William Beaumont Army Medical Center in El Paso, TX.  She then completed her three-year dermatology residency at San Antonio Military Medical Center (SAMMC), San Antonio, TX, and was promoted to the rank of Major.   After completing residency, she served as a faculty member of the SAMMC dermatology residency program and was deployed to Baghdad, Iraq, serving as the Theater Dermatology Consultant.  Dr. Lehman completed her military service as the Chief of Dermatology at Blanchfield Army Community Hospital, Fort Campbell, KY, in September 2013.

Dr. Lehman then entered civilian medical practice, working with Nashville Skin & Cancer as well as Premier Medical Group, before opening her own practice, Lehman Advanced Dermatology, in June 2017.  She practices general medical and surgical dermatology.

Dr. Lehman is a board-certified dermatologist and a fellow of the American Academy of Dermatology.  She has authored articles in national peer-reviewed medical journals and is a member of local and national medical societies.  Dr. Lehman is the recipient of the Leaf Chronicle’s Favorite Dermatologist Award for the last 3 years.  Dr. Lehman is married to Eric Lehman, a local attorney, and they have two children who attend Austin Peay State University.  Outside of work she enjoys spending quality time with her family.


Barbara Haffner, PA-C

Barbara Haffner is a board-certified Physician Assistant who received her Master of Science in Medicine from Trevecca Nazarene University. Born and raised in Columbia, Tennessee, Barbara has spent most of her life in the Middle Tennessee area, although she loves to spend her free time traveling in both the US and internationally. She received her Bachelor degree from Lipscomb University where she graduated class Valedictorian. After completing a clinical rotation in dermatology, she knew that she had found the area of medicine for which she was truly passionate. Barbara is thrilled to be part of the Lehman Advanced Dermatology family and is enjoying becoming a part of the Clarksville community through church and sports.


Kay Nehrbass, RN

Kay has been an integral member of Lehman Advanced Dermatology since our opening in 2017, caring for our patients before, during and after their procedures. As an RN for 35 years and nurse injector for 15+ years, Kay has become well respected among our patients. She is a knowledgeable and compassionate partner and her commitment to providing the best experience is observed by all. Kay combines her thorough knowledge of facial anatomy, caring nature, clinical training and expertise in cosmetic injections to achieve beautiful non-surgical results for our patients in a safe, comfortable setting.

Facial fillers coupled with laser treatments, topical products, and other special treatments have proven to reduce signs of aging and slow down the aging process altogether. It is a priority for us to stay up-to-date and current in today’s ever-changing aesthetic industry to help keep you looking young, fresh and natural.

The feedback from our patients about their experience with Kay’s injections has been phenomenal. She has a wonderful clinical eye for how to achieve a patient’s goals, excellent judgment and a “soft touch” in performing neurotoxin and filler injections. Patients have echoed these comments time and again, returning for repeat treatment at appropriate time intervals, as well as referring friends and family to Kay.

Although you can find Kay most of the time at work, she also enjoys spending time with her husband, Doug and twin sons, Gus and Lyle. As a family, they like to stay active, play board games together and take short trips in Doug’s Mooney airplane!