Our Team

Born and raised in San Antonio Texas where he graduated from Central Catholic High School in 1983. He attended and received his undergraduate degree from St. Mary’s University in 1987. Following his undergraduate completion, Dr. Kellum attended medical school at the University of Texas Health Science Center in San Antonio where he graduated in 1991. Dr. Kellum successfully completed his Family Practice Residency at John Peter Smith Hospital in Fort Worth in 1994. Dr. Kellum is married and he has four sons. In his spare time, Dr. Kellum enjoys golf and spending time with his family.

Dr. Arthur Gonzales is available and honored to assist you and your family at our Kellum Family Medicine and Wellness facilities in Schertz, Texas. Originally from Junction, Texas, Dr. Gonzales first obtained his pharmacy degree from the University of Texas at Austin, where he was a university honors student. While working as a pharmacist, he continued his education at the University of Texas Health Science Center at San Antonio, Medical School and received his Doctor of Medicine degree in 2006. Though he has a special interest and extra training in anesthesia, primary care and family practice became his chosen path.

Fluent in English and Spanish, Dr. Gonzales enjoys exercising, jogging, weightlifting, and reading on many topics including the Bible, classical Greek and Roman history. His most enjoyable and gratifying experiences are derived from the time spent with his beautiful wife Jennifer and three sons Eric, Matthew, and Nicholas of 18, 16, and 7 years of age, respectively.

Please join us along with your family in allowing Dr. Gonzales the honor and privilege of providing for your healthcare needs with an emphasis on prevention and improvement of your quality of life. If you would like to schedule an appointment with him, he will be available at our Schertz Clinic.

Art Campsey is a native San Antonian and graduated from Health Careers High School in 1998. Art holds a BS in Exercise Sport Science from Texas State University and a Masters in Physician Assistant Studies from Texas Tech University Health Sciences Center. Prior to completing his MPAS, Art spent eight years teaching high school biology and coaching athletics, where he realized the importance of clear communication, compassion for others and a love of giving. Now Art applies those skills daily, with his patients and co-workers alike, and is thrilled to be part of the Kellum Family Medicine team. Art is a member of AAPA and TAPA, and is on the Board of Directors for Bexar County Physician Assistant Society where he serves as CME co-chair. Art is also co-founder and operations director of Global Health Reach (www.ghrus.org), a non-profit organization that provides health care to underserved third-world populations.

Annalysa Diaz Elizondo was born and raised in Corpus Christi moved to San Antonio in 2011 after completing her BSN at Texas A&M Corpus Christi. She spent 9 years working in the intensive care unit and graduated from University of Texas at Arlington in 2021 with a Master in Family Nurse Practitioner. In her spare time she loves spending time with her daughter, family and friends.

Kathleen (Kat) Calara is an ANCC board certified Family Nurse Practitioner who graduated with her Master of Science in Nursing from University of Texas Health and Science Center in San Antonio as a member of Sigma Theta Tau, the leading international honor society of nurses. She also graduated from the same university for her Bachelor of Science in Nursing. She was a Neonatal Intensive Care nurse for 7 years prior to being a Nurse Practitioner. She was a nursing instructor for a year teaching Medical-Surgical, Geriatrics, and Psychology. She has experience providing care for the underserved population as she spent most of her externship providing care in the outskirts of San Antonio. She then traveled to Idaho, then Colorado to gain experience providing care for different populations before returning to San Antonio. IN her spare time, she enjoys traveling and going on adventures. She is excited to be able to share her experience and grateful for the opportunity of being a part of the Kellum family.

Sara Akin is a Family Nurse Practitioner who is board certified through the American Academy of Nurse Practitioners. Growing up in San Antonio, Sara developed a passion for serving the Alamo city and surrounding area. She followed this passion to the University of the Incarnate Word where she earned her Bachelor’s of Science in Nursing to become licensed as a Registered Nurse.

Following school, Sara gained experience in multiple areas including Telemetry and Women’s Health. Sara continued her growth as a healthcare provider by attending the University of Texas at Arlington to earn her Master’s of Science in Nursing to become a Nurse Practitioner. Sara is very excited and humbled to be able to serve you and be part of such a wonderful team at Kellum! In her free time Sara enjoys hiking, traveling, and cooking with her husband and two cattle dogs!