Meet Our Providers

Dr. Leo Tynan

Internal Medicine

Dr. Leo Tynan is a native of San Antonio, he moved to Fredericksburg in 1988 to start his medical practice. As the grandson of a German rancher, he feels very much at home with the people of Fredericksburg.
He received his B.A. from the University of Texas at Austin and his medical degree from Southwestern Medical School in Dallas.

As an avid naturalist, he loves the outdoors, especially hiking and birding, in particular, falconry. In addition to his professional commitments, Dr. Tynan serves on the Board of Last Chance Forever, a rehabilitation facility for birds of prey.

Dr. Phil Maple

Internal Medicine

Dr. Maple joined the Fredericksburg Clinic in January 2000 from the Austin Diagnostic Clinic, where he practiced for 14 years. He received his medical degree from Rush Medical College in Chicago. Dr. Maple completed his residency at the University of Texas in Houston, where he served as a Chief Resident for Internal Medicine from 1983 to 1984. 
Dr. Maple has always loved the Hill Country and enjoys outdoor sports, including hunting and fishing. He lives here in Fredericksburg with his wife and their three children.

Dr. Rad Kothmann

Family Medicine

Dr. Kothmann was born in San Antonio, He received his B.A. from Texas A&M, and went on to the University of Texas at Houston for his medical training. Dr. Kothmann completed his Family Practice residency at Spohn Memorial Hospital in Corpus Christi. He moved to Fredericksburg in 2004.
He grew up spending every weekend here in the Hill Country and has strong family roots in the Fredericksburg area. He loves hunting and fishing as well as spending time at his family’s ranch.

Dr. Kothmann lives here in Fredericksburg with his wife, Shelly, and their 2 children, Cassidy and Tess. He sees patients of all ages for both acute and chronic medical conditions.    

Dr. Jeff Holt

Family Medicine

Dr. Holt was born in Kerrville and grew up in Comfort, where he graduated from high school in 1996. He received his B.A. at the University of Texas at Austin, then went on to the University of Texas at Houston medical school. He then completed his Family Medicine residency training at the Waco Family Medicine Residency Program. He returned home to the Hill Country in 2008, and joined the Fredericksburg Clinic. 

Dr Holt enjoys playing the piano and guitar, and he also enjoys fishing. He lives here in Fredericksburg with his wife and their children. He loves spending time with his family.

Dr. Jennifer Mayben

Internal Medicine

Dr. Jennifer Mayben moved to Fredericksburg in 2006 and joined Fredericksburg Clinic in 2009. After graduating from Llano High School, she obtained a BS in Zoology from the University of Texas at Austin. She earned her Doctorate of Medicine from the University of Texas Medical Branch in Galveston in 2001. In 2004 she completed her residency in Internal Medicine from the University of Alabama, Birmingham, where she also incorporated

the Women’s health Track. After residency, Dr. Mayben obtained her Masters in Public Health from the University of Texas Health Science Center in Houston while completing a Primary Care Research Fellowship at Baylor College of Medicine.

Dr. Mayben is board certified in Internal Medicine and provides care for both men and women. Her practice encompasses the diagnosis and management of acute and chronic health conditions. She also performs routine annual physical exams including Pap smears.
When Dr. Mayben is not providing care for her patients, she enjoys running and reading. Mostly though, she enjoys spending time with her husband, Kelly and three children, AnnaKate, Samuel, and Adam.
  • Undergraduate: University of Texas at Austin, Bachelor of Zoology, Honors (1992-1995)
  • Medical School: University of Texas Medical Branch, Galveston, TX, Doctor of Medicine (1997-2001)
  • Internship: University of Alabama at Birmingham Internal Medicine Residency (2001-2002)
  • Residency: University of Alabama at Birmingham Internal Medicine Residency, Women’s Health Track (2002-2004)
  • Fellowship: Baylor College of Medicine Primary Care Fellowship (2004-2006)
  • Post-Graduate Medical Training: University of Texas Health Science Center, School of Public Health, Master of Public Health, Houston, TX (2004-2006)
  • Board Certification: American Board of Internal Medicine, Diplomat

Dr. Rebecca Daley

Family Medicine

Dr. Rebecca Daley was born in Pasadena, Texas and graduated from Deer Park High School.  She graduated from Texas Women’s University in 1993 with a BS in biology and attended the University of North Texas Health Science Center at Fort Worth, Texas College of Osteopathic Medicine where she earned her Doctor of Osteopathic Medicine degree in 1997.

She completed her internship and residency in Family Medicine at Dallas Southwest Medical Center and is board certified in Family Medicine and Osteopathic Manipulative Treatment.

Dr. Daley, her husband Bruce, and her 3 children have lived in Fredericksburg since 2010 after relocating from Liberty, Texas.  They enjoy an active lifestyle, love soccer, track, and swimming.

Dr. Daley is an adjunct clinical Professor in the Department of Family Medicine and the Texas College of Osteopathic Medicine as well as a part-time assistant professor in the Developing Osteopathic Clinical Skills division at the University of the incarnate Word School of Osteopathic Medicine.

She is the medical director for Ave Maria Hospice here in Fredericksburg and serves on the Good Samaritan Board of Directors.

As an MDVIP physician who puts great value in prevention, Dr. Daley’s focus in care is rooted in engaging in a whole person approach to her patient’s health, looking beyond the symptoms as well as identifying that a person’s lifestyle and environmental factors have a substantial impact on their wellbeing.  Her commitment to patients is to listen to them, provide holistic, empathic medicine, promoting the body’s natural tendency toward health and healing and utilizing evidence-based medicine for treatment.

Dr. Michael Johnson

Internal Medicine

Dr. Michael Johnson is a native Texan who grew up in Nacogdoches, Texas, and graduated from Stephen F. Austin State University before moving to San Antonio in 1998 to attend medical school. He completed his internal medicine residency at the University of Texas Health Science Center, San Antonio in 2005 and served as chief resident for that program through 2006 when he joined the University as a faculty member in the Division of Hospital Medicine. Between 2005 and 2013, he practiced within University Health System where he taught internal medicine resident physicians and medical students.

Dr. Johnson, his wife Jennifer, and two daughters, moved to Boerne, Texas, in 2009 after Jennifer joined the staff at Boerne Vision Center where she is a practicing Optometrist.  

Dr. Johnson joined the Fredericksburg Clinic in 2013 where he sees adult patients of all ages specializing in the management of both acute and chronic medical conditions.  
In his spare time, Dr. Johnson enjoys exercising, fishing, sports of all kinds, and spending time with his family.

Dr. Maggie Gainer

Family Medicine

Dr. Gainer grew up in Boerne, Texas where she attended Boerne High School. She went on to graduate from the University of Texas at Austin before attending medical school at UT Health San Antonio. She continued her training at Christus Santa Rosa Family Medicine Residency Program in San Antonio.   
During college, she worked at Pine Cove Christian Camps every summer, where she developed a passion to serve families and their well-being, As a family medicine physician, she looks forward to caring for the whole family (especially children), treating both acute and chronic issues. 
She is currently living in the Texas Hill country with her husband Alec and son, Jonathan. As a family, they love the outdoors (including hiking and lake activities) as well as all kinds of sports, especially college football.
Dr. Gainer Is excited to join the Fredericksburg Clinic family and looks forward to getting involved the Fredericksburg community!  

Dr. Elliana Wiesner

Internal Medicine

Dr. Wiesner is a board-certified internal medicine physician who has been in practice since 2018 as a hospital medicine physician. A native of Nicaragua, she graduated with honors from the School of Medicine at the University of El Salvador in 2009. She obtained her certification in Internal Medicine at ISSS El Salvador in 2012 and served as chief resident/faculty until 2013 when she moved to the United States.

Dr. Wiesner continued her medical training at Texas Tech University graduating from the Internal Medicine Residency in 2018. She then practiced hospital medicine in Odessa, Texas, and moved to Fredericksburg in 2023 when her husband, Carl Wiesner, took over an established CPA practice in Brady, Texas. They have four children; Lucia, Christine, and Valerie, who attend Saint Mary’s School, and baby, Patrick.

Dr. Wieser enjoys gardening and natural life photography. She especially loves the blooming wildflowers throughout the Texas Hill Country. She is committed to serving the Fredericksburg community with excellent and compassionate healthcare by welcoming adult patients in need of comprehensive management of both acute and chronic medical conditions.

Lisa Kott, FNP-C

Lisa is a nurse practitioner who joined us in March. She served our country in the Army and is currently active in the National Guard. She moved to Fredericksburg to live closer to family. With experience in primary care and emergency medicine, Lisa is comfortable with patients of all ages and is skilled at managing both acute medical problems as well as chronic health conditions. She is committed to preventative medicine for patients and has a special interest in women’s health issues. She is also certified in DOT physicals. She is currently accepting new patients.

Aaron Saul, Jr. FNP-C

Aaron grew up in Kerrville where he graduated from high school in 1990. After serving in the US Army, he returned home and attended Schreiner University to study Nursing in 1999. He attended San Antonio College where he completed his Associates Degree in Nursing in 2004.  After working as a cardiac, critical care, and trauma nurse for many years, he returned to school and finished his master’s degree in Nursing in Family Medicine from Frontier Nursing University in 2020. Aaron now lives in Harper with his wife of 30 years.  Aaron enjoys providing comprehensive primary care to patients of all ages.


When Aaron is not working, he enjoys traveling with his wife, hunting, fishing, cooking bbq, and spending time with his grandchildren.