James Marlin, Founder/CEO

James Marlin is the CEO of IVRS Wellness Center, a patient-centered medical wellness clinic built on the principles of functional medicine. After being diagnosed with liver disease and told he had only 10 years to live, James began searching for answers beyond traditional medicine. That life-changing experience led him to discover the power of functional, whole-body wellness—and ultimately inspired his mission to help others do the same.

More than 14 years later, James has far surpassed that original prognosis and has dedicated his life to sharing the approach that changed his own health. In 2016, he partnered with Nurse Practitioner Erin Montgomery to found IVRS Wellness Center, creating a place where personalized care, advanced therapies, and compassionate support come together.

Under James’s leadership, IVRS has grown into a trusted wellness resource for the Amarillo community and beyond, offering innovative treatments and individualized care designed to help patients feel better, live healthier, and take control of their well-being.

Erin Montgomery

Co-Founder, NP

Erin Montgomery is a Nurse Practitioner and co-founder of IVRS Wellness Center. With a passion for patient-centered care and a strong commitment to functional medicine, Erin has played a key role in shaping IVRS into a trusted resource for personalized wellness in Amarillo. She believes in treating the whole person, not just symptoms, and works closely with patients to develop individualized treatment plans that support long-term health and vitality.

Since helping found IVRS in 2016 alongside James Marlin, Erin has dedicated her career to empowering patients through education, advanced therapies, and compassionate care. Her clinical expertise and genuine dedication to helping others feel their best are at the heart of the IVRS mission.

Tina Gilbert

VP of Business Operations

Tina Marie has been an essential part of the IVRS Wellness Center team for the past five years, serving as Executive Assistant and providing invaluable support behind the scenes. Known for her organization, professionalism, and caring approach, Tina helps ensure the clinic runs smoothly and that patients receive exceptional service at every interaction.

From coordinating schedules to assisting with daily operations, Tina plays a vital role in creating the welcoming, efficient environment IVRS is known for. Her dedication to the team and to the patients of IVRS reflects the clinic’s commitment to compassionate, high-quality care.

Functional medicine is an advanced, science-based approach to primary care that seeks to understand how different systems in the body work together. Instead of offering quick fixes, functional medicine focuses on prevention, personalized treatment, and long-term health solutions.

This approach allows our team to evaluate:

• Hormonal balance

• Nutrition and digestive health

• Metabolism and energy levels

• Stress and lifestyle factors

• Inflammation and immune function

By addressing these areas together, functional medicine helps create lasting improvements in your health and quality of life.

Better health begins with the right kind of care. At IVRS Wellness Center, our medical team is ready to help you take control of your health through personalized, functional medicine–based primary care.