In Greenville and Spartanburg, South Carolina, Dr. Katherine Birchenough has spent years building a different kind of medical practice – one centered on understanding health before disease takes hold. It does not look like an experiment. It looks like a well-appointed clinic where people come in for a hormone panel and leave talking about their sleep, their stress, their skin, and their sense of who they are becoming. At the center of it is a physician who spent the first chapter of her career responding to emergencies and caring for children before shifting her focus toward prevention and health optimization.
Dr. Katherine Birchenough is the Owner, CEO, and Physician at OptimalSelf MD, a joint wellness and aesthetics practice she runs with her husband, Dr. Shawn Birchenough, a plastic surgeon. She is board-certified in Functional Medicine, Emergency Medicine, and Pediatrics, and she has spent 24 years practicing medicine, first in the traditional system and now in a model she built from scratch.
Her patients in Greenville and the SC Upstate community have, in her words, embraced an inside and outside concierge approach to care that treats the body as a single interconnected system rather than a set of separate complaints. The practice has grown every year since its founding, primarily through word of mouth and referrals, while revenue has increased consistently by 20 to 30 percent annually.
From the Emergency Room to a Different Kind of Question
Dr. Birchenough did not begin her career imagining hormone optimization or continuous glucose monitors. She began it in emergency medicine and pediatrics, disciplines that gave her an invaluable clinical foundation. But something else took root alongside the clinical skill: a growing discomfort with a system built to diagnose and treat disease only after it had already announced itself.
She wanted to understand something earlier and more fundamental. Why did people become unwell in the first place, and what could be done before that trajectory was set? That question pulled her toward functional and integrative medicine, a field she found herself fascinated by almost immediately, particularly the interconnected roles of nutrition, hormones, metabolism, gut health, environmental exposures, sleep, and stress.
The shift in her thinking was, by her own account, a shift in the question itself. Medicine became more interesting, she says, when it stopped asking “What disease does this patient have?” and started asking “What is preventing this person from functioning at his or her best?”
The Home Office Where OptimalSelf MD Began
Every practice has an origin story, and Dr. Birchenough’s began part-time in her own home office, while she was still working shifts in the emergency room to make ends meet. It was there, seeing patients on the side, that she found what she calls her calling.
The logic was simple, even if the execution was not. Rather than waiting for someone to become sick enough to need rescuing, it made more sense to catch the subtle red flags early and reverse disorders before they hardened into disease. She saw a healthcare system that gave physicians very little time to address increasingly complex problems, and a wellness industry that was often just as fragmented in its own way, with one provider for hormones, another for nutrition, another for aesthetics, and little communication between any of them.
What she wanted to build instead was a place that could hold all of it together. A practice that could know its patients well, investigate root causes, use advanced diagnostics when warranted, and build long-term relationships focused not merely on the absence of disease, but on something more ambitious: an exceptional level of health. Along the way, she noticed a pattern that would eventually shape the entire structure of her practice. As people started to feel better, they naturally wanted to look better too. That observation became the seed of everything OptimalSelf MD is today.
Beyond the Either/Or
Functional medicine carries a reputation problem, and Dr. Birchenough has heard the same misconception often enough to have a ready answer for it. People assume it is “alternative” medicine, somehow set apart from or opposed to conventional care. She rejects that framing outright. She is, first and foremost, a conventionally trained physician, and that foundation, she says, remains essential to how she practices.
What functional medicine does, in her telling, is simply widen the lens. Traditional diagnostics and evidence-based treatment remain the backbone, but they sit alongside deeper questions about nutrition, metabolic health, hormones, inflammation, environmental exposures, stress, sleep, and lifestyle. Her practice sometimes reaches for off-label medications or natural remedies that are not always well represented in the medical literature but are described by her as time-tested and safe. The goal, she insists, was never to choose between conventional and functional medicine. It was always to use whatever tools actually help the individual patient in front of her.
A System, Not a Collection of Symptoms
Ask Dr. Birchenough to describe her clinical approach, and she will not give you a list of specialties. She will give you a philosophy. Her practice looks at the patient as an interconnected biological system, not a collection of isolated symptoms to be treated one at a time. Environmental exposures, nutrition, hormone balance, metabolic health, body composition, sleep, stress, movement, and relationships all feed into how a person ages and functions.
In practice, that means combining comprehensive laboratory assessment with individualized nutritional and lifestyle strategies, hormone optimization where appropriate, advanced therapeutics, and regenerative approaches. Sometimes it means something as specific as a home hormone testing kit tracked across a cycle or two, to capture a clearer picture than a single blood draw ever could. Sometimes it means continuous blood glucose monitoring, used to dial in the healthiest possible diet for a given patient’s biology. Increasingly, her attention has turned toward longevity itself: identifying risk earlier, preserving muscle and cognitive function, improving metabolic resilience, and extending healthspan rather than simply lifespan.
And then there is the piece of the practice that looks, on the surface, the least like traditional medicine: aesthetics. OptimalSelf MD offers a range of services for skin, hair, and body, work led in large part by her husband, the practice’s plastic surgeon. What makes the model distinct, she is careful to point out, is not any single service. It is that all of these disciplines, wellness and aesthetics, longevity and hormones, are folded into one relationship instead of scattered across disconnected providers.
Inside and Out
The inside and outside framing is not marketing language for Dr. Birchenough. It reflects something she has come to believe deeply: that how people look and how they feel are far more connected than conventional medicine tends to acknowledge. Hormonal shifts, inflammation, nutritional deficiencies, stress, poor sleep, and metabolic dysfunction rarely stay hidden. They surface in the skin, the hair, the body’s composition, and in a person’s overall vitality.
At the same time, she pushes back against the idea that wanting to look vibrant is somehow shallow. There is nothing superficial, in her view, about wanting to feel confident in your own body. Her philosophy is to support both sides of that equation at once, improving health from within while using sophisticated aesthetic and regenerative treatments on the outside. The goal was never to turn someone into a different person. It was to help the outside more honestly reflect the vitality being built on the inside.
The Many Roles of a Founder
Somewhere along the way, Dr. Birchenough’s job title stopped meaning just one thing. She is still, first, a physician. But she is also now a strategist, an innovator, a mentor, an educator, and an entrepreneur, roles that did not come with a manual. Much of her time now goes toward thinking about what comes next: new science, emerging therapies, better patient experiences, new programs, better ways to make the model work.
The part of the job she says she enjoys most is creation itself, taking an idea, building the clinical framework around it, and then assembling the systems and the team needed to bring it to patients. She is candid about her ambition for the practice to keep moving. Healthcare is changing quickly, and she believes that the organizations that matter are the ones curious enough to change along with it.
A Partnership Built on Complementary Disciplines
OptimalSelf MD is, by Dr. Birchenough’s own description, very much a team effort. Its staff spans functional medicine, nursing, health coaching, aesthetics, IV therapy, wellness, and patient care, united by a shared philosophy that patients should feel genuinely known and cared for, not processed.
At the center of that team is her marriage. Her husband, Dr. Shawn Birchenough, is a plastic surgeon and co-founder of the practice. Their disciplines diverge, but she describes them as highly complementary, each bringing a different lens to a shared enterprise. Together, they have built an environment where medical wellness, longevity, aesthetics, and surgical expertise sit side by side comfortably.
She is quick to note that the partnership is not always smooth in the way a business plan might promise. They challenge each other. They bring genuinely different perspectives to the business. But what holds it together is a shared commitment to excellence and to continually raising the bar on the patient experience.
The Hardest Lesson in Growth
Ask any founder what tested their leadership most, and few will answer the way Dr. Birchenough does. It was not a single crisis. It was growth itself. As a small practice expands, its founder can no longer personally touch every decision or every patient interaction, and that loss of direct control turned out to be one of the harder lessons of her career.
Maintaining the intimacy and standards of a concierge practice while building the systems necessary to scale required a kind of leadership she had to learn deliberately. Scaling well, she came to understand, meant trusting people, developing leaders beneath her, building clearer systems, and protecting the culture of the practice with the same care she once reserved for clinical quality.
Her job, she realized, was not to do everything herself. It was to build an organization capable of delivering on its philosophy consistently, without losing the qualities that made it special in the first place. She admits, simply, that letting go of that control has been hard.
Measured in Years, Not Just Numbers
The milestones Dr. Birchenough points to are not the ones you would expect from a typical business retrospective. The most meaningful one, she says, has been the practice’s evolution from a physician-centered functional medicine office into a multidisciplinary destination for health optimization. That evolution, notably, was not imposed from the top. It was driven by patients themselves, who kept asking for more: an expanded clinical team, a larger physical footprint, deeper diagnostic capabilities, broader wellness services, aesthetics, regenerative therapies, IV therapy, plastic surgery, and structured health-optimization programs.
What matters just as much to her is retention. Many patients who arrived originally for a single, narrow concern have stayed with the practice for years, and she considers that longevity one of the truest measures of the practice’s success. Growth, in her account, has come primarily through word of mouth and referrals, with revenue increasing by 20 to 30 percent a year consistently, including through the pandemic.
What Comes Next
For Dr. Birchenough, the future of OptimalSelf MD is not a departure from what she has already built. It is an intensification of it, centered increasingly on health optimization, longevity, and a personalized path toward what she calls a person’s best life. She believes medicine as a whole is moving toward a model where biological risk is identified far earlier, well before disease becomes an inevitability rather than a possibility.
The practice is already developing more sophisticated programs around healthy aging, metabolic health, body composition, cognitive performance, regenerative medicine, hormone optimization, and advanced diagnostics. Her larger ambition reaches beyond her own clinic walls. She wants to help redefine what concierge medicine even means, shifting it from “better access to a doctor” into something more expansive: a proactive partnership designed to extend healthspan and human potential. She does not view 65 as a fixed point at which a person must stop pursuing ambitious goals. If a person feels amazing, remains cognitively sharp, and looks and feels their best, she sees no reason not to keep pursuing their dreams.
Recalibration, Not Balance
Ask Dr. Birchenough how she manages work and life, and she will gently correct the premise of the question. She does not believe balance is something anyone permanently achieves. It is less a fixed state and more an ongoing act of noticing when life has tipped too far in one direction, and then intentionally recalibrating.
Her curiosity, by her own description, extends well past medicine. She speaks of loving to learn, to travel, to spend time with the people she cares about, to be in nature, and to pursue experiences that broaden her perspective. Creation itself remains a constant thread, whether that means developing a new clinical program, designing a physical space, writing, or simply chasing a new idea. These pursuits, she says, energize her rather than merely filling her calendar.
A Higher State of Self
If there is a single idea that threads through everything Dr. Birchenough has built, it is contained in the name of her own practice. She believes that a higher state of health allows people to access a higher state of self. Health, in her framing, is not the final destination. It is the foundation that makes everything else in a life possible: the energy, the clarity, the confidence, the physical resilience, and the sense of agency that let people show up fully in their relationships, their work, their communities, and their lives.
Her stated goal has never been simply to help people live longer. It is to help them remain strong, vibrant, curious, engaged, and recognizably themselves for as much of that life as they are given. Her vision is ultimately about helping people preserve the qualities that make life meaningful while remaining active and engaged for as long as possible.
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