Strengthening healthcare across Oklahoma, one community at a time, with over 40 trusted professionals and patient-first care.
Kasey Williams’ journey into healthcare began with a deep desire to serve her community. A native of Ada, Oklahoma, she earned her Master’s degree and became a Physician Assistant in 2006. She spent the early years of her career working in family practice, internal medicine, and urgent care, gaining valuable experience while developing a passion for providing comprehensive, patient-centered care.
Through her work, Kasey recognized a significant gap in accessible healthcare for rural communities. Many patients were forced to travel long distances just to receive quality care. Determined to make a difference, she committed herself to creating a place where patients could receive compassionate, reliable care close to home.
Her passion also grew beyond primary care as she discovered the life-changing benefits of bioidentical hormone replacement therapy and wellness treatments. By helping patients restore their health, energy, and confidence, she realized her mission extended beyond treating illness—it was about improving quality of life.
Kasey’s heart for service reaches beyond her clinics. She has participated in five medical mission trips to Nicaragua and Haiti, providing care to underserved populations. These experiences strengthened her commitment to serving others with compassion, purpose, and excellence.
In 2013, Kasey founded Ada Health First with a clear mission: to provide high-quality, accessible healthcare to her hometown and surrounding communities. What began as a single clinic quickly became a trusted medical home for patients seeking personalized and compassionate care.
As patient needs grew, so did the vision. In 2015, she expanded services by opening Ada Aesthetics Medical Spa, offering advanced wellness and aesthetic treatments to help patients feel their best both inside and out.
In 2020, Kasey expanded further by acquiring The Skin Company Medical Spa in McAlester, where she met her husband, Collin. With his encouragement and shared dedication to community healthcare, they opened Mac Health 1st in 2022.
Their mission continued to grow with the acquisition of Allen Health 1st in 2024, extending care to the communities of Allen, Calvin, and Holdenville. In 2025, they opened Tish Health 1st in Tishomingo, marking their sixth clinic and continuing their commitment to expanding access to quality care across rural Oklahoma.
Today, their clinics are supported by a team of more than 40 dedicated professionals who share the same passion for compassionate, patient-first care. Together, they remain committed to strengthening healthcare across Oklahoma and treating every patient like family.
See clinic locations for specific services offered.
Regain balance, restore vitality, and improve your overall quality of life through personalized hormone optimization.
Achieve safe, sustainable results through personalized care and medical guidance
A decade of trust in four Oklahoma communities.
Trained to deliver professional and compassionate service.
Supported with personalized healthcare and treatment.
Navigating the healthcare system shouldn’t be a source of stress. We have designed our primary care clinic experience to be straightforward and patient-focused, ensuring you spend less time in the waiting room and more time getting well. At Your Health First, we’ve broken down the journey into four simple steps:
When you step into a Your Health First location, you aren’t just seeing a provider; you are visiting a team with over a decade of dedicated service in rural Oklahoma. Our credibility is rooted in a “family-first” philosophy. We combine the clinical rigor of a high-volume primary care clinic with the personalized touch of a neighborhood doctor. By staying at the forefront of medical advancements—like BIOTE Hormone Therapy (HRT)—we ensure that residents of Ada, OK, and the surrounding areas receive world-class care without the long drive to the city.
Your health shouldn’t wait. Whether you are looking for primary care doctors accepting new patients, a sustainable Medical Weight Loss program, or the rejuvenating benefits of our Medical Spa, we are ready to welcome you.
Yes. As a growing healthcare clinic, we are proud to have our primary care doctors accepting new patients at our offices in Ada, OK, Allen, OK, McAlester, OK, and Tishomingo, OK.
Our primary care clinic handles your essential health needs like annual physicals and chronic disease management. Our wellness services, such as BIOTE Hormone Therapy (HRT) and Medical Weight Loss, are designed to optimize your quality of life and energy levels beyond basic medical requirements.
We offer a variety of aesthetic and Medical Spa treatments across our locations to help you look as good as you feel. We recommend calling your specific local clinic in Ada, OK, or McAlester, OK, to confirm specific service availability.
To ensure a smooth start at Your Health First, please bring a photo ID, your insurance card, and any current medications or previous medical records. We strive to be the most accessible primary care provider in the region.
From routine checkups to chronic condition management, Health First Clinics provide reliable primary care you and your family can count on.
1414 Arlington St Suite 1400
Ada, OK 74820
200 N Easton
Allen, OK 74825
23 E Choctaw Ave #1b
McAlester, OK 74501
108 W Main St
Tishomingo, OK 73460
