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Our Team

The people behind your care

Good care comes down to the people providing it.

APL brings together medical providers, a care coordinator and specialists in nutrition, mental health and performance. Each person has a clear role, so you always know who is doing what.

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Physician led, personally delivered

Where good medicine meets people who know you

APL brings medical care, movement and day to day coordination together in one practice. Your providers lead every clinical decision, your coaches and specialists work from the same plan, and your care coordinator makes sure nothing is missed. The result is care that feels personal, because it is.

Founder, Apex Performance & Longevity

Kate Bolia

Kate Bolia has spent more than 15 years helping people move better, build strength, and feel more confident in their bodies. As the owner of Apex Dunwoody, she takes a personal, detailed approach to helping clients work through pain, physical limitations, and performance goals.

Her background includes certifications in Muscle Activation Techniques, NASM Personal Training, Z-Health, and Functional Range Conditioning, along with training in the McGill Method of back pain assessment. A former Ironman triathlete, she understands both the demands of physical performance and the importance of staying active as we age.

Kate founded Apex Performance & Longevity to bring together personalized medical care, physical performance, and ongoing support. Working alongside an experienced medical director and physician assistant, she is building a coordinated approach to health that fits each client's goals and life.

She continues to work hands-on with clients while leading APL, with a simple goal: helping people feel better today and maintain their health, strength, and independence for the years ahead.

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Medical team

Your licensed providers

Your medical providers lead every evaluation, prescription, treatment and follow up. Medical care is provided through APL by licensed physicians and physician assistants.

Dr. Rhet Langley, MD, ABA, ABPM

Medical Director

Dr. Rhet Langley is the founder of THRIVE Medicine and serves as Medical Director for Apex Performance & Longevity (APL), where he leads the clinical vision for precision-based preventative, performance, and functional medicine programs. His approach combines evidence-informed medicine, advanced diagnostics, hormone optimization, metabolic health, peptide therapies, regenerative medicine, and modern functional medicine to help patients improve energy, recovery, longevity, and overall quality of life. With a background shaped by both medicine and military service, Dr. Langley brings a disciplined, mission-focused philosophy to patient care and leadership. His experience has helped shape a results-driven approach centered around accountability, resilience, performance, and long-term health optimization. Through THRIVE Medicine and APL, Dr. Langley focuses on building practitioner-led systems that bridge traditional medicine with modern longevity and functional medicine strategies, emphasizing proactive care, root-cause evaluation, and sustainable health outcomes rather than reactive treatment alone. His work continues to focus on helping individuals take control of their health through precision, performance, and preventative medicine.

Nayeli Alcantar, PA-C

Physician Assistant

Nayeli Alcantar, PA-C, is a board-certified Physician Assistant who is passionate about helping patients achieve optimal health through a personalized, whole-person approach. Her clinical background in urgent care, orthopedics, interventional pain management, and exercise physiology has shaped her belief that true wellness goes beyond simply treating symptoms. She enjoys educating her patients, helping them understand their health, and creating individualized plans that support long-term wellness and prevention. Nayeli is fluent in Spanish and strives to create a welcoming environment where patients feel heard, supported, and empowered. When she's not caring for patients, Nayeli enjoys gardening, cooking, working out, and traveling with her husband. Her favorite way to unwind is spending time at home with her two dogs, Ace and Vini.

Specialists and coordination

The rest of your team

Depending on your program, our specialists bring their expertise into your plan. Your care coordinator keeps everyone connected, so you know who to contact and what happens next.

Medaine Anonuevo

Director of Care Coordination

Medaine Anonuevo oversees the day-to-day client experience as Director of Care Coordination. She keeps communication and administrative needs organized, while supporting practice operations and marketing. Her thoughtful follow-through helps clients and the team stay connected.

Sarah Langley

Registered Dietitian

Sarah Langley is a registered dietitian with training in nutrition and psychology. She turns nutrition research into practical strategies and sustainable habits. Her approach connects food, behavior and mindset to support a healthier relationship with eating and long-term well-being.

Robert Johnson

Health & Performance Coach

Robert Johnson brings experience in high-performance coaching, executive leadership and human behavior. He helps clients understand their options and build strength, habits and accountability. He offers health and strength coaching in person and remotely, including when clients travel.

Donna Echlin

Psychotherapist

Donna Echlin is a licensed psychotherapist with more than 30 years of clinical experience. She specializes in EMDR and supports people navigating anxiety, depression, trauma and performance challenges. Her whole-person approach helps patients build resilience and emotional well-being.

One team

Everyone is working from the same plan

Most people see different specialists who never talk to each other. At APL, your providers, dietitian, therapist and coaches share one plan, with your permission, and stay in touch about your progress. Your care coordinator makes sure nothing falls between the cracks.

In practice, that means your dietitian knows what your provider has recommended, your coach knows what to avoid while an injury settles, and you don't have to repeat your story at every appointment.

Team FAQ

Still have a question? Call us on 470 823 2228 or send us a message and we will get back to you.

Ask our team

Who will I see first?

Most people start with a consultation with our team, then a medical evaluation with Dr. Langley or Nayeli.

Do I have to see every specialist?

No. You see the people your plan calls for, and you can add more support whenever you want it.

Is my conversation with the psychotherapist shared?

No. Sessions with our psychotherapist are confidential. Only what you choose to share becomes part of your wider plan.

Who leads the medical team?

Our Medical Director, Dr. Langley, leads the medical team, working with our physician assistant Nayeli.

Who do I contact day to day?

Your patient care coordinator. They look after appointments, records, messages and follow up.

Can I meet Kate?

Yes. Kate still works hands on with clients at Apex Dunwoody.

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Know who is looking after you

Every client knows who leads their treatment, who manages the details and who to call.

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