CARE TEAMS
Meet your Medical Care Team
Dr. Goldie Stands-Over-Bull, MD
Dr. Goldie Stands-Over-Bull is a board-certified family physician dedicated to providing comprehensive care to patients of all ages, from newborns to the elderly. Her areas of special interest include women’s health, adolescent medicine, addiction medicine, and chronic disease management. Dr. Stands-Over-Bull is passionate about promoting patient autonomy and delivering culturally appropriate care tailored to the needs of her diverse patient population.
She earned her Doctor of Medicine degree from Yale School of Medicine and completed her Family Medicine residency at the University of Washington, graduating in 2019 and 2022, respectively. An enrolled member of the Crow Tribe in Montana, Dr. Stands-Over-Bull is committed to giving back to her community. Outside of work, she enjoys spending time with her huskies.
Dr. Gary Vollenweider, MD
Dr. Vollenweider joins us as a volunteer physician after retiring from private practice. He brings 32 years of experience as a board-certified Family Physician. He is a Baylor University graduate and attended our own University of Texas Southwestern medical school in Dallas. He completed his family medicine residency at The University of Texas Health Science Center at Tyler. While he has many outside interests such as woodworking and flyfishing, his main passion remains medicine. He is proud to be a part of the Indian Health Service and to serve the Indigenous people.
Karima Jooma, PA
Karima Jooma graduated with a Bachelor of Science from the University of Texas Southwestern Medical Center at Dallas in 1997, and an Associates at Brookhaven College at Farmers Branch, Texas in 1999. Karima has been serving the Native American community for over 25 years at Texas Native Health, where she has built strong bonds with her patients over the years. She has a kind, compassionate nature, and a laugh that fills the room.
Anthony Douthit, PA
Anthony Douthit was born and raised in the DFW area, originally hailing from Arlington, TX. He obtained his undergraduate degree from Texas Women's University in community health. His healthcare journey began as a hospital corpsman in the Naval Reserves and continued as a firefighter/paramedic for 10 years. In 2021 Anthony returned to school to pursue his master’s in physician assistant studies, a decision fueled by his passion for improving community health. Following his graduation from the University of North Dakota's PA program in 2023, he worked for the Bureau of Prisons briefly before coming to Texas Native Health. He enjoys spending time with his lovely wife and three wonderful kids in addition to hiking, camping, and attending local church activities. As a proud member of the Choctaw Nation, Anthony is deeply grateful for the support he received during his education. He considers it an honor to give back to the Native American community.
Bethany Garrison, PA
Bethany Garrison received her undergraduate degree in kinesiology from Texas Woman’s University in 2017 and a master’s degree in athletic training from the University of Texas at Arlington in 2019. Prior to becoming a PA, she was an athletic trainer for Children’s Health Andrew’s Institute for 5 years, serving high schools in the Texoma region. She earned a master’s degree in physician assistant studies from the University of Pittsburgh in 2025. She has special interests in orthopedics, women’s health and preventative care. As a proud member of the Cherokee Nation, she is honored and grateful to give back to the community. Outside of medicine, she enjoys playing soccer, studying Spanish and watching true crime and nature documentaries.
Cheri Davis, Lead RN
Cheri Davis is a Registered Nurse and Certified Wound Care Professional (RN, CWCP) with more than 15 years of experience in healthcare. Before becoming an RN, she worked as a Medical Assistant across several clinical settings, spending the last decade serving in Community Health Clinics throughout South Dakota and Vermont.
Her passion for Addiction Medicine, Behavioral Health, and Wound Care inspired her to further her education and transition into nursing. Cheri is committed to providing patient-centered care that meets people exactly where they are on their healthcare journey.
Outside of work, Cheri and her husband enjoy camping and exploring the outdoors. They are excited to now call Texas home and look forward to spending more time with their family.
Caroline Hermann, FNP
Originally from Toronto, Canada, Caroline Hermann is a preceptor for UT Southwestern and University of North Texas. She has resided in Dallas, Texas for 22 years, and has served the Native American community of North Texas with UITCT for over 6 years as a Family Nurse Practitioner. Caroline is also a Certified Nurse Midwife, and highly favored among the patient community and her coworkers alike. Her interests include yoga, researching alternative healing modalities, and cooking.
Amber White, RD
Amber White is a Registered Dietitian and Certified Diabetes Care and Education Specialist with over 10 years of experience. She completed her dietetic internship through St. Louis University and her master’s in nutrition from Alabama University. Her previous experience includes training on insulin pumps, private practice, and working in an endocrinology medical office. She continues to serve the American Indian/Alaskan Native population for over 8 years at Texas Native Health, recently taking over as head of the Diabetes Program. Her current position allows her to teach through many different avenues including cooking classes, group, and individual appointments. When she is not working, she is homeschooling and spending time with her 3 children and husband. She enjoys walking, cooking and spending time with friends.
Anita Castaneda, Medical Assistant
Originally from Albuquerque, New Mexico, Anita Castaneda has proudly called Arlington, Texas home for the past 10 years. She is a graduate of Northside High School in Fort Worth and holds certifications as a Medication Assistant from Peloton College and as a licensed manicurist from Tint Cosmetology.
With over 17 years of experience in pharmacy and 8 years in the medical field, Anita brings a unique blend of healthcare and beauty expertise to everything she does. Her passion lies in education—she teaches at her own cosmetology school, where she emphasizes the powerful connection between health and beauty.
When she’s not working with patients or students, Anita enjoys doing nails and spending time at the cosmetology school she owns and operates.
Evelyn Okafor, Medical Assistant
Evelyn Okafor, born and raised in Dallas, Texas, is a Nationally Registered Certified Medical Assistant with over 14 years of experience. She completed her program at PCI Health Training Center in 2009. Evelyn is dedicated to collaborating with patients of all ages and is passionate about providing high-quality care.
Outside of work, Evelyn enjoys spending time with her husband and two children and watching her favorite TV shows, such as "Law & Order: SVU" and "Grey’s Anatomy."
Kristina Ramirez, Medical Assistant
With 11 years of experience as a Certified Medical Assistant in Dallas, Texas, Kristina Ramirez is dedicated to providing compassionate care and creating a welcoming experience for every patient. Known for her strong organizational skills and genuine desire to help others, she strives to make each visit as comfortable as possible. In her free time, she loves making memories with her children and grandson.
Meet your Patient Relations Team
Morningstar Spencer, Medical Office Manager
Morningstar Spencer is a citizen of the Chickasaw Nation with lineage in Pawnee, Creek, and Seminole tribes. Originally from Lynwood, California, she and her family relocated to Dallas and eventually to Arlington, Texas where she has resided for over 20 years. Her passion for the medical field began after a diagnosis of breast cancer at a young age. Enduring the difficult and unpredictable journey of prevailing over her diagnosis is what inspired her to help others in similar situations. Morningstar now serves as the Medical Office Manager of Texas Native Health where she has been employed for over six years. She enjoys nature hikes, reading books, and spending time with family.
Jacqueline Folsom, Patient Relations Representative
Jacqueline “Jacquie” Folsom is a proud citizen of the Choctaw Nation of Oklahoma. Since joining Texas Native Health in 2002, Jacquie has dedicated herself to serving the Native American community. Her ability to build strong relationships with both patients and coworkers has been a cornerstone of her career. She finds joy and fulfillment in the dynamic nature of her work and the new challenges each day brings. Outside of work, Jacquie enjoys spending quality time with her family and watching a variety of sports.
Salvador Medina, Patient Relations Representative
Salvador Medina is a descendent of the Navajo Nation and Pueblo of Zia. He was raised in Mexico, New Mexico, Arizona, finally settling in Dallas, TX. Salvador graduated from the University of North Texas at Dallas with a Bachelor of Applied Arts in Psychology and Sociology. Currently, he is once more attending his alma mater with the intention of graduating with a master’s in Clinical Mental Health Counseling. Prior to joining Texas Native Health in 2023, he worked as a medical scribe and medical assistant in multiple medical settings such as: emergency departments, family medicine, and internal medicine. Salvador values his work with the Native American community to the fullest degree and is grateful that he can give back through different avenues. Whenever he is not working or insanely occupied with his studies, Salvador enjoys learning different languages, meditating, reading, and spending time with his family, and his cat Vampira.
Jasmin Ochoa, Patient Relations Representative
Jasmin Ochoa is a Dallas native who attended Lone Star High School and has been working in the medical field for over two years. Jasmin is passionate about her family and friends, who continuously inspire her with their hard work and dedication. In her free time, she enjoys spending quality time with loved ones, shopping online, and indulging in her love for reading.
Karina Abelino, Patient Relations Representative
Born in Austin and raised in Dallas, Karina Abelino is a proud Hispanic Woman of Mexican descent who values culture cultural connection, compassion, and open mindedness. With experience in patient relations , she is dedicated to ensuring patients feel heard, respected, and well cared for throughout their entire healthcare experience. Outside of work, Karina enjoys singing, cooking spending time at the beach, and connecting with others through music and culture.
Elexia Garcia, Records and Referral Coordinator
Elexia Garcia is a proud enrolled citizen of the Apache Tribe of Oklahoma, with lineage in both the Kiowa Tribe of Oklahoma, as well as the Comanche Nation. Being born and raised in Dallas, TX. Elexia has been able to see the growth of Texas Native Health since her childhood. Her professional background includes: an Associate’s degree in Personal Computer Support, and multitudes of experience within different medical and dental offices. Since she joined Texas Native health in 2022, Elexia has been serving the Native American community as the medical records technician, and has recently taken over as the referral coordinator. On her free time, Elexia is preoccupied taking care of her two amazing daughters, but enjoys spending time with family, reading, and cooking.
Meet your Dental Care Team
Dr. Audrey Cha, DDS
Dr. Audrey Cha joined Texas Native Health in 2021 bringing with her over 20 years of experience in private practice dentistry. She serves the Native American communities in North Texas and surrounding regions by providing general dentistry services in a gentle and caring manner. As a provider, she takes great effort to ensure that every patient’s dental experience is a positive one. Dr. Cha earned her Bachelor of Science degree from the University of California, Los Angeles and her Doctor of Dental Surgery from the UCLA School of Dentistry in 1992. She later completed a residency in Advanced Education in General Dentistry at the University of Oklahoma School of Dentistry, and in 2005 was awarded Fellowship status in the Academy of General Dentistry. She grew up in Sao Paulo, Brazil and is fluent in Portuguese. When not practicing dentistry, Dr. Cha enjoys spending time with her family, reading, meditating, and exploring new places and restaurants.
Dr. Brian Ta, DMD
Dr. Brian Ta has lived across the United States, including in New Jersey, North Carolina, Massachusetts, and Washington, before choosing Texas as his home to be closer to family. He earned his Bachelor of Science in Biology with a Minor in Chemistry from the University of North Carolina at Chapel Hill, graduating with Distinction, and went on to receive his Doctor of Dental Medicine degree from Tufts University School of Dental Medicine, where he was awarded a Merit Scholarship.
Dr. Ta is highly regarded for his compassionate and approachable nature, as well as his commitment to delivering exceptional patient care. Outside of his dental practice, he enjoys spending time with his family and cats, traveling, hiking, and discovering new culinary experiences. Dr. Ta is dedicated to building trusting relationships with his patients and providing the highest standard of care.
Lacie Brown, Hygienist
Originally from Texas, Lacie Brown graduated from Boswell High School in Fort Worth, Texas. She attended Tarrant County College where she obtained her Associate of Applied Science in Dental Hygiene. She is passionate about helping people to achieve healthy smiles and improving the overall health of her patients. Lacie has served the Native American community at Texas Native Health for over one year as the Family Dental Hygienist. She enjoys gardening, sewing, and relaxing with friends, family, and her dog, Ollie.
Sheridan Smith, Hygienist
Sheridan, a proud Texas native, graduated from North Forney High School before earning her Bachelor of Science in Dental Hygiene from Texas Woman's University. With nearly eight years of experience in the dental field, she began her career as a dental assistant before advancing to her current role as a dental hygienist. Sheridan is deeply committed to fostering trust-based, lasting relationships with her patients and takes great pride in contributing to their overall healthcare. Outside of work, she enjoys spending time with her family, exploring the outdoors, and diving into a good book.
Raquel Villarreal, Dental Assistant
Raquel Villarreal was born and raised in the DFW area and has dedicated 19 years to the field of dentistry, with 16 of those years as a dental assistant. She gained her extensive dental experience in the field and successfully completed all required exams from the Texas State Board of Dental Examiners.
Raquel is passionate about her role as a dental assistant, not only preparing for dental procedures but also educating patients on the importance of dental care. Before joining Texas Native Health, she worked entirely in private dental practices. Raquel feels honored and grateful to be part of the Texas Native Health team and looks forward to helping many improve their oral health.
Outside of work, Raquel stays busy with her three daughters and enjoys spending quality time with her family and their dog, Benji.
Dairi Caballero, Dental Assistant
Originally from Honduras, Dairi Caballero moved to the United States over a decade ago and has proudly called Dallas, TX home ever since.
Dairi is a dedicated Registered Dental Assistant with over four years of experience in the dental field. She completed her studies at PCI Health Training Center. At our office, she works closely with our dentist to support a wide range of procedures, always striving to make patients feel informed, comfortable, and cared for every step of the way.
Outside the clinic, Dairi loves spending time with her family and her playful dog. She also enjoys attending church activities and taking in the beauty of the outdoors whenever she can.
Maridtza Aguirre, Dental Assistant
Maridtza Aguirre, a Dallas native, is a proud graduate of Woodrow Wilson High School and completed her dental assistant training in 2019. With a passion for helping patients achieve healthy, confident smiles, she is dedicated to improving oral health and making a positive impact in her community.
Esmeralda Cardenas, Dental Assistant
Born and raised in Dallas, Texas, Esmeralda Cardenas is a dedicated dental professional with over 15 years of experience in the field. A graduate of Skyline High School, she earned her Dental Assistant and Nitrous Oxide certifications from UT Health San Antonio and is also certified in Sealants and Prophylaxis through Grayson College.
Esmeralda is passionate about delivering high-quality care and ensuring each patient feels valued and cared for. Outside of work, she enjoys attending church, volunteering in her community, and spending quality time with her three daughters. Whether dining out together or indulging in a little online shopping, Esmeralda cherishes making memories with her family.
Meet Your Pharmacy Care Team
Dr. Pekam Takusi, Pharmacist
Dr. Pekam Takusi was born in Cameroon, West Africa. At the age of 19, she moved to Perugia, Italy to pursue her childhood dream of becoming a healthcare provider. Because of her extrovert personality, she chose a career in Pharmacy and obtained her doctorate degree in 1999. In 2002, she relocated to Texas where she obtained her license to practice in the United States. Her zeal to serve humanity and help others to improve their self esteem pushed her to becoming a Certified Professional Life Coach from the Institute for Professional Excellence in Coaching (IPEC). She utilizes these skills to be an excellent pharmacist to her patients. She truly enjoys her field of work, and lives by her saying “Serving as a pharmacist is simply being myself.”
Dr. Nancy Vesoh, Pharmacist
Born in Cameroon, West Africa, I loved both medical research and the practice of medicine, because of how it impacts the state of wellbeing and quality of life. I would very quickly realize as a teenager while shadowing a missionary doctor that the site of blood was not my forte. All that passion got diverted into the other aspect of medicine; research and pharmaceuticals. I then pursued an undergrad degree in organic chemistry, worked in biotechnology, then obtained a doctorate degree in pharmacy at the university of Maryland, Baltimore.
If not at work, it would be salsa dancing or the Kitchen; making up recipes, trying new ones, and doing best part…eating.
Meet Your Behavioral Health Team
Christopher Logan, Behavioral Health Manager
Christopher Logan aka “Logan”, LPC, LCDC is the lead program therapist for Texas Native Health. Logan graduated from UNT Dallas with his Master’s degree in Clinical Mental Health Counseling. Prior to that, he received his Bachelor of Science degree in Psychology from the University of Texas at Dallas. As a clinician, Logan has a breadth of experience that allows him great flexibility with his clients. Prior to Texas Native Health, Logan has worked in multiple venues that included psychiatric hospitals, campus counseling and managing an Intensive Outpatient Program for addiction. As a member of the Choctaw Nation of Oklahoma, Logan fulfills a unique role in providing mental health services to Native Americans throughout the state of Texas.
Martha Jarmon, LCSW
Martha C. Jarmon has been a clinical social worker for over thirty years, and has worked in most areas of social work. She has been largely hospital based for the majority of her career. She has experience in operating a community health agency in New Mexico, which provided services to a multi-cultural population. While there, she developed a pilot program for at risk youth in conjunction with the local school district and conducted a private mental health counseling practice. Prior to coming to Texas Native Health, Martha provided both in-home and telehealth counseling and social work services to people throughout Texas.
Mike Frazier, LCDC
Originally from Rattan, Oklahoma, Mike Frazier currently resides in Dallas, TX where he has called home for the past 63 years. He attended high school at Crozier Tech in Dallas, and went on to obtain a Bachelor of Science at Texas Wesleyan University. Mike has served as a Licensed Chemical Dependency Counselor at Texas Native Health for 14 years and has been practicing for over 40 years. As a proud citizen of the Choctaw Nation, he is passionate about making a difference in the lives of his Native American community and committed to maintaining close relationships with his family and friends. Mike is an avid softball player and enjoys golfing in his free time.
Ruth Thunderhawk, Crisis Response Specialist
Ruth Thunderhawk is an enrolled citizen of the Northern Cheyenne Nation of Lame Deer, MT, and is a descendant of the Rosebud Sioux Tribe. She has been a lifelong resident of the DFW Metroplex, specifically South Dallas. In her capacity as the crisis response specialist for Texas Native Health, Ruth collaborates with her colleagues to deliver trauma-informed mental health care. She earned her bachelor’s degree in Human Development and Family Science from the University of North Texas. Ruth's professional background encompasses various mental health settings, including crisis case management and working with PTSD and trauma survivors. Her expertise in crisis intervention, patient advocacy, and program development equips her to effectively serve her fellow Native American community members in her current role. Beyond her professional endeavors, Ruth finds joy in spending quality time with her family and engaging in arts and crafts.
Jessica Martinez, Licensed Professional Counselor (San Antonio Location)
Jessica Martinez is a Licensed Professional Counselor with over five years of clinical experience supporting adolescents and adults through a broad range of emotional and psychological challenges. She is known for her compassionate, nonjudgmental approach and her ability to create a safe, empowering space for healing and growth.
Jessica draws upon evidence-based practices, including Motivational Interviewing, Cognitive Behavioral Therapy (CBT), and Solution-Focused Therapy, tailoring each session to meet the unique needs of her clients. Her work is grounded in a commitment to helping individuals build resilience, gain clarity, and achieve meaningful, lasting personal development.