Jeff Loeffler
ONE80 Founder + CEO
Jeff has been part of the aesthetics industry since 2009, gaining experience across nearly every side of the business. From hiring and team development to marketing, networking, operations and business expansion. In 2015, Jeff became a co-owner of an aesthetics practice, taking on the day-to-day operations and working quietly behind the scenes to build a strong team, develop growth strategies, expand the practice, and cultivate meaningful relationships with key industry partners. That work ultimately helped the practice earn national recognition.
Today, Jeff leads ONE80 with a fresh perspective shaped by more than a decade in the industry. He believes the best clinics are built on more than great results – they’re built on great people, high standards and continued investment into staff and training. His vision for ONE80 is simple: create a place where patients have access to exceptional providers, thoughtful care, and a luxury-level experience without the traditional luxury markup. A place where safety, ethics, education, and integrity aren’t negotiable. And, where the team is continually invested in becoming better at what they do.
Kari Goering, NP
Clinical Director
Kari is an experienced nurse practitioner born and raised in Lincoln and has been making her mark in the world of aesthetics since 2018. With a background as an ER nurse and provider, Kari brings a wealth of medical knowledge and a calm, confident presence to her aesthetic practice.
Kari is the Clinical Director of ONE80 leading the clinical vision, from safety standards and treatment protocols to provider training and quality review, while continuing to be a gold-standard injector herself. Kari oversees clinical onboarding for new providers, manages the entire aesthetic + wellness team, and is the standard-bearer for consistency and safety across all three locations. She provides continued support and training to ensure no matter who you see, the level of care never changes.
Outside of work, Kari enjoys staying active alongside her husband and two kids. She enjoys traveling, going to concerts, a good book, and living an active and healthy lifestyle. She has run several half marathons and loves the outdoors.
Licensed in: South Dakota & Nebraska
Amber Meader, PA-C
Amber Meader, PA-C, was born and raised in a small town and graduated from Union College in 2015. With nine years of experience in plastics and aesthetics, Amber has dedicated her career to helping people look and feel their best. She’s passionate about making genuine connections with her patients, ensuring they feel comfortable, heard, and empowered.
Amber’s our unicorn injector that bounces around to both our Lincoln & Omaha locations. She’s trained in advanced aesthetic injectables and weight loss solutions. When you meet Amber, you can expect her to truly listen to your goals, carefully assess your features, and collaborate with you to create a personalized treatment plan. She believes in enhancing natural beauty and fostering confidence — and along the way, you’re sure to make a friend. With her warm personality and love of conversation, Amber makes every visit feel like catching up with someone who genuinely cares.
Outside of the med spa, Amber enjoys spending quality time with her husband, Trevor, their daughters, Emmett and newborn Madden, and their two beloved dogs. She also shares her passion for wellness as a fitness instructor at a local gym, encouraging others to feel their best inside and out.
Licensed in: Nebraska
Kristy Buehrer, RN,BSN
Kristy Buehrer spent 20 years as a Registered Nurse in a hospital setting where she brought her passion for advocating patient care, safety, and ethical practice into our med spa clinic for the last 8 years. Kristy works in the Lincoln location and trained in everything aesthetics ranging from BOTOX, Dermal Fillers, Platelet-Rich Plasma, Collagen Induction Therapy, DiamondGlow Facials & she’s highly passionate about our medical-grade skin care line including ZO Skin Health, SkinMedica & Revision.
Kristy is passionate about delivering exceptional care with a focus on safety, comfort and results. Her mission is to ensure every patient feels special, valued and confident with their treatment. She leads with a gentle touch and attention to detail – a true artist. Kristy takes pride in creating personalized experiences that prioritize both beauty and wellness with her overall goal to help you look and feel your very best!
Outside of work, Kristy is married and has 2 children, Trevor & Abby, 1 granddaughter and TWO more granddaughters on the way. She loves spending time with her family and friends, walking her Golden Doodle, Lola, a good craft local brew, live music, and being outside. Kristy has ran 2 marathons and many half marathons, more in my future. She leads a healthy lifestyle which is why she’s a part-time OrangeTheory Fitness Coach.
Licensed in: Nebraska
Tristan Milone, NP
Tristan was born and raised in Omaha and earned her BS in Nursing from the University of Nebraska Medicine and went on to achieve her Master of Science in Nursing in 2024. Tristan brings years of experience and a genuine love for helping others feel their most confident and has a passion for aesthetics.
Tristan is our Omaha Injector trained in advanced aesthetic injectables, including BOTOX, dermal fillers, platelet-rich plasma (PRP), CIT/micro-needling and weight loss solutions. She’s embraced the artistry of aesthetics, combining her clinical expertise with a keen eye for detail. She’s passionate about providing high-quality aesthetic care and takes pride in educating her patients on personalized treatment plans tailored to meet their unique goals. With Tristan, you can expect an open conversation, expert guidance, and results that enhance your natural beauty. Tristan’s patients say that she makes them feel comfortable and truly listened to. Her patients rave about the compliments they get from Tristan’s work and gets a lot of referrals because of it.
Outside of work, Tristan enjoys spending time with her husband and their two daughters, staying active through exercise, and exploring new destinations through her love of travel. Whether at the med spa or on a family adventure, she brings warmth, dedication, and a commitment to making others feel their best.
Licensed in: Nebraska
Callie Wethor, RN/BSN
Callie Wethor is a dedicated aesthetic nurse with a passion for helping her patients feel their most confident. After graduating from South Dakota State University with her RN, BSN — and excelling on the softball field — she began her nursing career in the NICU at Sanford Medical. While she cherished her time caring for newborns, her passion for aesthetics led her to the med spa world.
Callie is our Sioux Falls Injector and trained in advanced aesthetic injectables, including BOTOX, dermal fillers, platelet-rich plasma (PRP), CIT/micro-needling and skin care. Callie finds immense joy in seeing the confidence her patients exude after their treatments. She has a particular love for lip filler, appreciating the artistry that goes into achieving the perfect lip shape. Her goal is to deliver personalized results that enhance each patient’s unique beauty, ensuring they leave her chair glowing inside and out.
When she’s not perfecting the perfect pout, Callie enjoys staying active, traveling, spending time with family and her son who is always keeping her busy.
Licensed in: South Dakota
Kassidy Graber, PA-C
Kassidy is a Physician Assistant with a background in biology and aesthetic medicine. She earned her undergraduate degree in Biology while playing collegiate soccer, an experience that taught her the value of discipline, teamwork, and dedication. She went on to earn her Master of Physician Assistant Studies from South University in Savannah, Georgia.
Her passion for aesthetics began while working as a Medical Assistant in dermatology, where she developed a strong appreciation for skin health and attention to detail. She later gained experience in the medical spa setting, where her love for aesthetic medicine and helping patients feel confident in their own skin continued to grow.
At ONE80, Kassidy offers a variety of aesthetic + wellness treatments, including neurotoxin, dermal filler, microneedling, and chemical peels. She also provides wellness care including weight lossShe views aesthetics as an art form and believes every face is unique. Her approach is individualized to each patient, focusing on enhancing their natural features and creating results that are subtle, balanced, and tailored to their goals. Her greatest passion is helping people feel like the best version of themselves while celebrating the natural beauty that makes each person unique.
Licensed in: South Dakota