Meet the Adult CF Team

Jason Fullmer, MD
Director Adult Cystic Fibrosis Program

Dr. Fullmer moved from Houston and helped establish the Adult CF Program in Austin in 2009. During this time he has been actively involved in the care of adult CF patients. His goal has been to improve outcomes and the clinical care experience for adult CF patients in the Central Texas area. The adult care team is closely partnered with the Cystic Fibrosis Foundation. We are actively involved in quality improvement work and clinical research, including partnering with the CF Foundation’s Therapeutic Development Network, providing patients with access to multicenter clinical trials.
Dr. Fullmer completed an internal medicine/pediatrics residency at the University of Texas Health Science Center in Houston before fellowship training at Texas Children’s Hospital. He is Board Certified in Internal Medicine, Pediatrics and Pediatric Pulmonology. This training has prepared him well to care for patients with chronic diseases, especially patients transitioning from pediatric to adult care.
Dr. Fullmer is married and has four boys. His children and their activities take up most of his spare time. When time allows, he enjoys running, fishing, and any activity that gets him outdoors.


Joseph Tayar, MD
Associate Director Adult Cystic Fibrosis Program

Dr. Tayar received his Bachelor’s degree from Texas A&M University and completed an internal medicine/pediatrics residency at Baylor College of Medicine in Houston, TX. His fellowship training was at Texas Children’s Hospital in Houston.
Dr. Tayar’s interest in Pulmonary medicine stems from the vast diversity of disease processes and how these diseases affect other organ systems. His interests include cystic fibrosis, chronic respiratory failure, asthma, chronic lung disease of prematurity, and chronic ventilator management. In addition, with a background in Internal Medicine, he has a passion for transition medicine. He enjoys working with adolescents and young adults, focusing on helping them understand how their healthcare needs and services will change as they become independent adults.
Dr. Tayar moved back to Austin with his family after leaving 15 years ago. He has three young children who keep him extremely busy. In what spare time he can find, he enjoys outdoor activities including CrossFit, paddle boarding Lady Bird Lake, mountain biking and hiking.
He is also a diehard Aggie (and doesn’t mind showing it off in “T-sip” country!)


Allan Frank, MD
Founder, Adult CF Program, CF Provider

Dr. Frank received his Bachelor degree from the University of Pennsylvania in 1969 and went on to the University of Texas Health Science Center in San Antonio where he received his M.D. in 1973. He completed his Internship and first year of Residency at St. Louis Children’s Hospital from 1973-1975. He completed his second year in Pediatric Residency from 1975-1976 and a Pediatric Fellowship from 1976-1978.
Dr. Frank has practiced in Austin since 1978. He is fluent in Spanish. He has a special interest in children’s respiratory ailments and is a pioneer in Cystic Fibrosis care in Central Texas.



Christi Dodd, MSN, CPNP-AC
Certified Pediatric Nurse Practitioner in Acute Care, Adult CF Program

Christi received her Associates Degree of Nursing from Temple College in 2006 and her Bachelors of Nursing from Angelo State University in 2017. She completed her Master’s Degree in Nursing with an Acute Care Nurse Practitioner from the University of Texas at Arlington in December, 2020. She is joining  the adult team as a full time nurse practitioner. As the nurse practitioner, she will conduct physical examinations, prescribe medications, and work alongside our physicians and care team to ensure that patients receive personalized care and support in both clinic and hospital settings.
Christi worked for Dell Children’s Medical Center on the respiratory unit prior to joining the outpatient cystic fibrosis care team as the coordinator for the pediatric team in 2016. She is actively involved in quality improvement and has presented at the North American CF Conference. She is looking forward to becoming more involved with the research program for CF.
Christi lives with her family on a small ranch outside of Burnet, Texas. She loves taking care of their 3 horses and multitude of cats and dogs. She does not currently own a zoo because of the diligent efforts of her fiancé.


Kristina Richter, RN
Clinical Registered Nurse

Kristina received her Associate’s Degree in Nursing (Registered Nurse) from Austin Community College in 2008.  She previously worked for Seton for 10 years as a Clinical Assistant, Registered Nurse, and Charge Nurse at CHOA/Dell Children’s on the respiratory floor.  She has also worked as a school nurse and prior authorization nurse for insurance companies. Kristina’s role is to help coordinate patient care, including receiving medications from pharmacies, sending referrals to a specialist, or even helping find a new center if you move.

In her spare time, Kristina enjoys being with her 2 kids and her husband, exercising, and spending time outdoors.



Amanda Smith, RN
Clinical Registered Nurse

Amanda Smith joined the Adult CF Outpatient Team in July 2020.  She graduated with her BSN from the University of Texas at Austin in 2010. She worked with CF patients as a pediatric inpatient RN for 10 years. Amanda’s role is also to help coordinate patient care, including receiving medications from pharmacies, sending referrals to a specialist, or even helping find a new center if you move.
When not at work, she enjoys cycling, leading worship praise band, and cheering on the Texas Longhorns…Hook ’Em!


Kathy Villagomez, RRT
Program Coordinator / Respiratory Therapist

Kathy received her Associate of Science degree in Respiratory Care from Tyler Junior College. She is a Registered Respiratory Therapist in Texas. She joined Ascension Seton and Dell Children’s Medical Center of Central Texas Cystic Fibrosis (CF) Center from 2016 to 2018 as a pulmonary function test RRT. She has worked with a wide array of respiratory patients including neonatal. She joined our team in 2018 not only to perform pulmonary function tests, but also to help educate and support our patients with their respiratory care needs. In 2020, Kathy became the Adult Center’s Program Coordinator.
In her spare time, Kathy enjoys spending time with her three kids, going to Universal, catching up with friends, watching movies, and baking.



Jill Aeschliman, LCSW
Social Worker

As the social worker for the Adult Cystic Fibrosis program, Jill provides emotional support as well as guidance on connecting patients and their families to financial supports, housing assistance, legal services, and medication and insurance programs.
Jill received a Bachelor of Social Work from Calvin College in Grand Rapids, MI, and a Master of Science of Social Work from the University of Texas at Austin. Prior to working in the Cystic Fibrosis clinic, she worked as a social worker for hospice, served as the Director of Resident and Family Services for a memory care facility, determined disability eligibility at Disability Determination Services, and counselled patients on smoking cessation.
Jill considers Austin to be home but has lived in several other places including Singapore and Honduras. She enjoys traveling to unfamiliar places, torturing her colleagues with pictures of delicious food, various crafting pleasures including but not limited to quilting, knitting, and cross-stitch, and taking walks.


Kaitlyn Kennis, MPH, RD, LD
Clinical Dietitian

As the Adult Cystic Fibrosis dietitian, Kaitlyn assesses our patient’s nutritional status according to their weight, enzyme medication needs, gastrointestinal health, and vitamin levels. She provides nutrition education, monitoring, and support to each of our CF patients for the purpose of improving their quality of life.
Kaitlyn grew up in Cedar Park and has lived in the Austin area for most of her life. She graduated with a Bachelor’s degree in Nutritional Sciences from The University of Texas at Austin (Hook ’em!) and a Master’s degree in Public Health/combined dietetic internship from The University of Texas Health Science Center at Houston. She is passionate about nutrition in chronic disease, health promotion and behavior change, and considering her patient’s individual public health concerns.
In her free time she enjoys cooking new recipes, walking her dachshund Connor, doing Peloton workouts, and spending time with her family (and their additional 4 dachshunds).


Melissa Vriseno, RRT
Respiratory Therapist

Melissa received her Associate of Science degree in Respiratory Care from Temple College and my Bachelor of Science degree, in Professional Development in Advanced Patient Care in 2016. She has had the privilege of caring for many of the smallest little ones in the NICU all the way up to many diverse adult populations as a therapist and in leadership roles. She have been a Registered Respiratory Therapist for over 20 years and is thrilled to be a part of the Adult CF program.
In her free time she enjoys working out, hot yoga, and traveling with her husband. Spending time with her dogs is also an essential part of her day.


Mackalah Green, PT, DPT
Physical Therapist

Mackalah has worked at Ascension Seton Medical Center Austin since March 2019 after moving to Austin in early 2019. She works with a variety of populations in the hospital and joined the CF clinic team in the summer of 2019. She enjoys helping others find an exercise routine that works for them to improve their quality of life and overall health. As a physical therapist, I assess exercise fitness, assist in creating an exercise program or modify an existing program, address acute or chronic pain, and help our patients with CF work towards improving their lives through exercise.
Mackalah is from a small town in northern Illinois called Geneseo. She received her Bachelor of Science in Biology and Psychology from Greenville University. Mackalah worked at a hospital in Springfield, MO after graduating from Southwest Baptist University with a Doctorate in Physical Therapy in 2018. She also worked at the Southwest Baptist University Pro Bono Outpatient clinic and had the opportunity to teach students as well as serve the community through physical therapy.
In her spare time, Mackalah enjoys spending time with her family, being outside, fly fishing, and exploring Austin.


Denise Kelley, Pharm D

Denise is a pharmacist who works in the inpatient setting at Seton Medical Center Austin and also helps with the Adult CF clinic. She meets with patients in the clinic to update medication lists, review for possible drug interactions, and provide counseling on any medication related questions. If any CF patients are admitted to the hospital, she helps ensure that inpatient orders are consistent with the patient’s home regimen and assists with antibiotic dosing and selection.

Denise is originally from Birmingham, Alabama and attended both undergraduate and pharmacy school at Auburn University. In her free time, she loves to travel, go to Auburn football games, eat chips & queso, and relax with her two cats – Heisman and Wrigley.


Sarah Schwartz
Research Support Assistant, Pediatric and Adult CF Programs

Sarah Schwartz graduated from the University of Texas at Austin in 2007 with a Bachelor of Liberal Arts degree focusing on Classical Archaeology and Ancient Greek. For eight years, she served as Office Coordinator for the Pediatric & Adolescent Dermatology department of ’Specially for Children, a pediatric sub-specialty care group affiliated with Dell Children’s Medical Center. During this time, she worked in close liaison with the dermatology providers and Research Department staff. In July 2016, she was recruited to join the Research Support Services department and the CF research team.
Sarah is the first point of contact for our patients and families regarding new and upcoming research studies and clinical trials. She informs patients about all the exciting research opportunities going on in our clinic.
In her spare time, Sarah enjoys creek-walking, arts and crafts, baby animals, and playing piano.


Brittany Outterson, BHA
Department Assistant

Brittany graduated from Kaplan University in 2014 with a Bachelor of Science in Health Administration. After graduation, Brittany worked as an Office Coordinator for Texas Diabetes and Endocrinology.
After she wanted to expand her knowledge in the healthcare industry, she joined The Central Texas CF Center in 2015. Brittany acts as a liaison between patients and families and supports the Pediatric and Adult teams with various types of scheduling tasks, insurance verification, obtaining prior authorizations so the appointments go smoothly, helps navigate calls to ensure a patient is properly taken care of, and assists in requesting medical records from other facilities.
In her free time, Brittany enjoys going to the beach, being outside, traveling and spending time with her husband and daughter.