Our Physician

Since 1975 the Doctors and medical professionals at the Kellum Medical Group have been providing services to accommodate all ages of our diverse range of patients. At the Kellum Medical Group our Doctors and medical staff want their patients to know they are receiving the best health care for them. We strive to provide the best care from the front office staff to the treating physician.

When you visit one of our Kellum Medical Group Clinics, our physicians will provide your family with the latest healthcare in all major areas of medicine from infancy through adulthood. Our qualified staff of doctors, nurses and clinicians is dedicated to creating lifelong relationships with you and your family by offering contemporary medicine when you need it and at your convenience.

Meet Our Physicians

Daniel H. Kellum Sr., D.O.
Dr. Daniel H. Kellum Sr., a mainstay in the San Antonio area medical community for the last 35 years, was born and raised in Rio Grande City in the South Texas Valley where he attended and graduated from Rio Grande High School. Dr. Kellum attended and received his undergraduate degree from the University of Texas at Austin College of Pharmacy. Following his undergraduate completion, Dr. Kellum attended and received his medical degree from the Kansas City College of Osteopathy. He did his general internship at the Oklahoma College of Osteopathic Medicine in Tulsa Oklahoma. In his spare time, Dr. Kellum enjoys playing baseball and spending time with his family and his grandchildren.

Meet Our Providers

Araceli Sierra
Araceli Sierra, PA-C has been a Physician’s Assistant for eight years following her graduation from the University of Texas Health Science Center in San Antonio. She has been a part of the Kellum Medical Group family for her entire post graduation career specializing in Pediatrics. Sierra is married and has two children.
Denise Solis PA
Denise Solis was born in San Antonio, Texas. She received an associate degree in nursing from San Antonio College. She continued her education at The University of Texas Health Science Center San Antonio, receiving a Bachelors of Allied Health and a Masters degree in Physician Assistant Studies. Denise has been with Kellum Medical Group practicing family medicine and obstetrics and gynecology since 2008.
Louis Nistal PAC
Louis Nistal was born in Mexico City and graduated from the Medical School at the Universidad Nacional Autónoma de México. Nistal moved to the United States and successfully attended and graduated from the Physicians Assistants School at University of Texas Health Science Center in San Antonio. Has been a part of the Kellum Medical Group family for the last four years. In his spare time, Nistal enjoys reading traveling and spending time with his family.