One Provider +

One Patient =

Better Health

We’re just people taking care of people.

Here for One

Reason: You


We wake up every morning with a goal to deliver healthcare that truly cares. Meet the team striving to make your experience remarkable.

Dr. Keith Helton

Founder, Chairman

The founder of five innovative healthcare companies, Keith has been a practicing specialist in internal medicine and pediatrics as well as a managing partner with one of East Tennessee’s largest and most respected medical groups, Galen Medical Group. He served as Executive Vice President of Physician Services at a leading academic medical center, Erlanger Health System, and currently serves on the board of directors of the UT Research Foundation. He graduated from the University of Tennessee Center for Health Sciences in Memphis.

I have 1,000% confidence that we do it differently and better than anybody else.

—Dr. Keith Helton

I have 1,000% confidence that we do it differently and better than anybody else.

—Dr. Keith Helton

David Kinzler

Chief Executive Officer

Before joining us, David worked at Boston Consulting Group, where he supported a wide range of strategic engagements for Fortune 500 clients. He spent 12 years in government service—first as a Marine infantry officer, then as the Legislative Director before transitioning to the private sector. David earned a Bachelor of Science from the U.S. Naval Academy and a Masters of Business Administration from the Wharton School at the University of Pennsylvania.

Ashley Berry, RN

Chief Clinical Operations Officer

With more than 15 years of healthcare management experience, Ashley currently oversees five of our Sumner County clinics as well as several clinics in Tennessee and Georgia. Ashley earned her nursing degree at Tennessee State University and previously served as a health coach. Above all, she has a passion for optimal health and wellness.

Jen Hodges, MSM

Chief Client Officer

Jen oversees the Center for Healthy Living and the state-wide employee and spouse wellness program for Purdue University. She has worked in the health and wellness industry for over 15 years, including leadership and coaching roles. Jen received her undergraduate degree in Health Promotion at Purdue University and her Masters of Business Administration and Management from Wesleyan University.

Wil Trohanis

Chief Revenue Officer

A group benefits veteran with 20 years of experience, Wil joined One to One Health from Aon. There, he led healthcare strategic partnerships and focused on client-facing solutions that serve the needs of mid- and large-market customers. Wil was a multinational distribution leader at MetLife, launching and operating international initiatives. He studied international business and management at the University of Tennessee, Knoxville.

Paul Dickenson

Chief Financial Officer

Prior to joining One to One, Paul served as the CFO for Ubiquitous., a venture-backed marketing startup and as the VP of Finance for Bellhop, a Chattanooga-based, venture-backed marketplace company in the moving and logistics space. Paul brings over ten years of experience leading finance and strategic planning in the startup world, specifically tech-enabled marketplace companies. Paul is married to a Chattanooga native, Elin (Bunch) and they welcomed their first daughter in June of 2022.

Jocelyn Chambers

VP Client Development

Jocelyn has over 15 years of experience in working with corporate clientele and their group health and benefits plans. She helped start a benefits advisory firm based in Nashville and successfully grew it over 12 years. She specializes in implementation, strategy development, and partnership activation.

Tillman Endsley

VP Strategy and Operations

Tillman joined One to One Health after working as a program manager at Facebook, where he focused on reducing real-world harm. He joined the Marine Corps in 2004 and served in the infantry and special operations unit for 10 years, and he continues to serve as a reservist today. Tillman studied engineering at the University of California, Los Angeles, and is earning his Executive Masters of Business Administration at the University of Virginia Darden School of Business.


Who Care

The Experts

At One to One Health, our physician-led team walks alongside you. Meet the doctors in charge of making sure our patients receive the best care.

Dr. David Alvarez

Medical Director

David is a board-certified internal medicine physician with over 20 years of inpatient hospital experience. He was an instrumental leader in expanding MDP Management through recruiting physicians and engaging community physicians. By increasing communication with the primary care providers in the communities we serve, patients experience true care and better outcomes. Dr. Alvarez graduated from the Universidad Central Del Este (Uce) Facultad De Medicina and completed his residency at Morehouse School of Medicine.

Dr. Will Smith

Medical Director

Will is a board-certified physician specializing in internal medicine and pediatrics with a keen interest in improving patient experience. He has practiced medicine for more than 10 years with the Galen Medical Group, where he also serves on the board of directors. Will’s a graduate of the St. Louis University School of Medicine.

Dr. Christen Fleming

Medical Director

Dr. Christen Fleming is an internist with House Call Primary Care and previously at the UT Medical Center. While completing her residency at UT, she was the recipient of both the Rawson Award and the Clinic Star of the Year awards. Christen graduated summa cum laude from the University of Tennessee Honors College and the University of Tennessee Health Sciences Center.

Dr. Lisa Smith

COVID-19 Medical Director

Lisa is a medical director of the One to One Return to Work/School/Sports program, where she consults multiple ongoing committees and is hands-on creating the “playbooks” for businesses and schools, interpreting ever-evolving science into everyday behaviors. She is a pediatric surgeon at University Surgical Associates and holds dual appointments as an assistant professor in both the Pediatrics and Surgery departments at the University of Tennessee College of Medicine Chattanooga Unit.

Dr. David Bruce

COVID-19 Medical Director

David is a medical director of the One to One Return to Work/School/Sports program and an orthopedic surgeon with fellowship training in pediatrics and sports medicine. With 20+ years of experience, David works in private practice at RiverRun Sports Medicine and Orthopedics and is the team doctor for both Baylor and McCallie schools. Since the beginning of the pandemic, he has developed personal protective equipment and taught athletes hygiene practices to combat COVID-19. David graduated from the University of Alabama - Birmingham School of Medicine.

Dr. Shabeer Abubucker

Mental Health Medical Director

Shabeer is a psychiatry specialist who’s directing One to One Health’s behavioral health program. He is a graduate of and completed his residency at Medical College of Georgia, and he practices in Tennessee and Kentucky.

Always Ready

Let’s Talk


We’re here to help. To learn more about our employer healthcare solutions or become a part of our community, please contact us directly.