Meet the Top Tier Team

The providers and staff behind your care — board-certified clinicians and a support team who treat every visit like it matters.

Real credentials. Real time with patients. A team that actually knows your name.

Founder & Medical Director

Allie Moore, PA-C

Board-Certified Physician Assistant · ABAAHP Board-Certified Anti-Aging & Regenerative Medicine Specialist · Fellowship-Trained Longevity Medicine Provider

Who She Is

Allie Moore is a board-certified Physician Assistant, ABAAHP Board-Certified Anti-Aging and Regenerative Medicine Specialist, and Fellowship-Trained Longevity Medicine Provider. She is the Founder and Medical Director of Top Tier Wellness and Weight Loss in Littleton, Colorado, and one of the few PA-owned independent longevity practices in the state.

What She Does

Her clinical focus is hormone optimization, metabolic health, and precision longevity medicine for women and men who are done settling for answers that do not match what they are experiencing in their bodies. She specializes in perimenopause, menopause, and complex hormone dysfunction, bioidentical hormone replacement therapy, GLP-1 and incretin-based metabolic therapy, peptide protocols, and brain and metabolic longevity.

The Research Behind the Practice

Allie is a candidate for the Doctor of Medical Science degree at the University of Lynchburg, where her doctoral research challenges the evidence base currently used to restrict hormone therapy in women over 60. Her work argues that the clinical guidelines most providers follow were built on data from the Women's Health Initiative, a landmark study that used synthetic hormones and oral conjugated equine estrogen, not the transdermal bioidentical 17-beta estradiol that Allie uses in practice. When route and formulation are properly isolated, the benefit-risk profile for initiating non-oral bioidentical estradiol in postmenopausal women over 60 is significantly more favorable than current guidelines reflect. This is not a fringe position. It is an evidence-based argument that millions of women are being undertreated because the wrong data is driving the wrong conclusions.

Credentials and Memberships

She holds active membership in The Menopause Society and is currently preparing for the Menopause Society Certified Menopause Practitioner examination. She also holds memberships in the American Academy of Anti-Aging Medicine, the American Academy of Physician Associates, the Colorado Association of Physician Assistants, the Obesity Medicine Association, and Physician Assistants in Obesity Medicine. She has advanced training and extensive hands-on expertise in pellet therapy, bioidentical hormone replacement, and comprehensive hormone optimization for women and men.

How She Practices

What separates Allie is not just her credential stack. It is how she thinks. She trained in inpatient nephrology, practiced across multiple states in high-acuity and primary care settings, and built Top Tier from the ground up specifically because she refused to deliver the kind of care the volume-based system forces on providers and patients alike. Every initial consultation at Top Tier is 90 minutes. That is not a marketing decision. It is a clinical one. Hormone, metabolic, and longevity medicine cannot be done correctly in less time, and Allie will not pretend otherwise.

Her approach is grounded in data, including LC-MS/MS hormone testing, comprehensive metabolic panels, and body composition analysis, but it is built around the patient in front of her. She asks better questions than most providers, listens to what the labs confirm and what they miss, and builds protocols that are individualized down to delivery method, dose, timing, and lifestyle. She does not write prescriptions. She builds strategies.

Why This is Personal

Allie brings a personal dimension to this work that most clinicians cannot. As a former semi-professional soccer player and Olympic Development Program athlete, she understands what it means to demand performance from your body and to feel the gap when your physiology stops cooperating. Her own experience navigating hormone optimization and longevity medicine shaped the way she practices. She knows what it feels like to want your body to match your drive, and she built an entire practice around making that possible.

Who She Sees

Her patients are high-functioning people who have tried the standard system and found it insufficient. They come to Top Tier because they want a clinician who has done the work, knows the science at depth, and will not give them a generic answer to a complex problem.

If that is you, you are in the right place.

Proceduralist & Clinical Partner

Hunter Powell, PA-C

Board-Certified Physician Assistant · ABAAHP Board-Certified Anti-Aging & Regenerative Medicine Specialist · Fellow in Longevity Medicine, American Academy of Anti-Aging Medicine

Who He Is

Hunter Powell is a board-certified Physician Assistant, ABAAHP Board-Certified Anti-Aging and Regenerative Medicine Specialist, and Fellow in Longevity Medicine through the American Academy of Anti-Aging Medicine. He is a proceduralist and clinical partner at Top Tier Wellness and Weight Loss in Littleton, Colorado, and holds advanced certification in personal training and sports nutrition.

Regenerative Orthopedics and Sports Medicine

Hunter specializes in regenerative orthopedic and sports medicine, with a clinical focus on non-surgical management of musculoskeletal injury, joint degeneration, tendinopathy, and sports performance recovery. His procedural services include viscosupplementation with Orthovisc and Monovisc, corticosteroid injections, and trigger point injections for acute and chronic musculoskeletal pain and inflammation. He is currently completing advanced musculoskeletal ultrasound training and expanding his procedural capabilities to include ultrasound-guided orthobiologic injections, including platelet-rich plasma therapy, as part of a comprehensive regenerative orthopedic program.

Peptide Therapy for Sports Performance and Recovery

Hunter manages peptide protocols specifically designed for sports performance optimization, injury recovery, and tissue repair. His approach integrates peptide therapy with structured rehabilitation and performance programming to accelerate return to sport, preserve lean mass, and support long-term musculoskeletal health. This is a clinical differentiator available to a limited number of providers in the Denver metro area.

Male and Female Hormone Optimization and Sexual Wellness

Hunter's program addresses hormone optimization and sexual wellness for both men and women, helping clients restore vitality, improve function, and perform at their highest level in every area of life. For men, this includes testosterone optimization and addressing erectile dysfunction to elevate sexual function, physical performance, and cognitive sharpness. For women, this includes balancing estrogen, progesterone, and testosterone to improve libido, energy, mood, body composition, and overall quality of life. Hunter approaches hormonal health as a complete system, integrating hormonal strategy with metabolic and body composition data to help every client feel, perform, and live at their best.

Exercise Integration and Performance Consulting

Hunter holds advanced certification in personal training and sports nutrition and works with GLP-1 and weight loss patients on structured exercise reintegration protocols designed to preserve lean muscle mass and build a durable physical foundation. He consults with athletes and performance-focused individuals on sport-specific training optimization, where medicine and movement science meet.

Who He Sees

His patients are men and athletes who are done accepting pain, decline, or suboptimal performance as inevitable. They come to Hunter because they want a provider who understands the body at the intersection of medicine, movement, and recovery, and who has the procedural skill set to match.

Direct Primary Care Lead

Thuy Vy “Vee” Phan, PA-C

NCCPA Board Certified Physician Associate · Member, American Academy of Physician Assistants

Meet Vy

  • NCCPA Board Certified Physician Associate
  • Member, American Academy of Physician Assistants
  • 13+ years of experience in primary care, internal medicine, and urgent/acute care
  • Launching Top Tier's Direct Primary Care Program

Thuy Vy Phan, PA-C, known to her patients as “Vee”, is a board-certified Physician Associate with over thirteen years of experience providing patient-centered primary care, internal medicine, and urgent care. Vee is spearheading the launch of Top Tier's new Direct Primary Care program, bringing true whole-family, whole-life healthcare to our concierge model. She sees patients of all ages, from children to adults, for primary care and same-day urgent care needs, alongside hormone optimization and medical weight loss, giving families a single trusted provider for the full picture of their health.

Vee built her career in high-volume clinics managing the full spectrum of primary care medicine: diabetes, hypertension, hyperlipidemia, thyroid disease, depression and anxiety, asthma and chronic bronchitis, pediatric well checks, and acute, same-day illness care for patients from infancy through their senior years. Few providers bring that kind of range, and it's exactly what a true direct primary care program needs: one provider the whole family can see, whether it's a child's well check, a parent's chronic condition, an urgent illness, or a hormone or weight loss plan, all without being shuffled between offices. Her background also includes direct experience with hormone replacement therapy, giving her a natural bridge into Top Tier's hormone and weight management services.

What sets Vee apart is the kind of medicine she was trained to practice and the kind she insists on practicing: unhurried, relationship-based primary care. Rather than the rushed, ten-minute visits typical of traditional primary care, Vee's appointments are built around real time with her patients, thorough evaluation, and treatment plans tailored to the individual rather than a script. She is passionate about getting to the root cause of a patient's health concerns and being a consistent, known provider that both kids and adults can turn to for anything, from a yearly physical to a same-day illness to a hormone or metabolic health concern, without ever feeling like a number.

Vee earned her Master of Physician Assistant Studies from Texas Tech University Health Sciences Center, following her Bachelor of Science in Child and Family Studies, with a minor in Biology, from Baylor University.

Clinical & Support Team

Kim Dixon, RN, BSN

Kim Dixon, RN, BSN

Clinical Operations Manager

Kim is a Registered Nurse with over ten years of clinical experience, currently serving as Top Tier's Clinical Operations Manager. She has led the development of the clinic's IV Therapy Program from the ground up and now oversees clinical policy, staff training, and quality standards across the practice. Kim is spearheading the launch of Top Tier's Regenerative Aesthetics Program as the clinic's Lead Injector, combining her emergency and critical care nursing background with specialized training in neuromodulators and aesthetic medicine. She is deeply passionate about helping patients look and feel their best through safe, evidence-based, and personalized care.

Courtney Heezen, LPN

Courtney Heezen, LPN

Licensed Practical Nurse

Courtney is a Licensed Practical Nurse with nearly a decade of clinical experience across hormone therapy, medical weight loss, and aesthetic medicine. She has administered GLP-1 injectables and neurotoxin treatments, supported hormone pelleting and IV therapy programs, and worked hands-on with advanced aesthetic devices including Emsculpt Neo, Emsella, and Emface. Courtney also holds formal esthetics training, giving her a unique blend of clinical skill and aesthetic expertise. Patients can count on Courtney for clear education, attentive care, and a genuine passion for helping them feel confident in their bodies and their treatment plans.

Connor Riley, Medical Assistant/EMT

Connor Riley

Medical Assistant / EMT

Connor brings hands-on emergency and IV therapy experience to the Top Tier team. He spent over two years as an Emergency Department Technician at Lutheran Medical Center, where he built strong skills in vascular access, patient monitoring, and fast-paced clinical care. Most recently, Connor has worked as an IV Technician and Supply Manager at a Denver IV hydration bar, where he administered infusion therapies and kept clinic operations running smoothly behind the scenes. Known for his positive attitude and steady, detail-oriented approach, Connor is passionate about making every patient feel comfortable and well cared for from the moment they walk through the door.

Brittney Harper

Brittney Harper

Patient Experience Manager

Brittney brings years of healthcare operations leadership to her role overseeing the day-to-day patient experience at Top Tier. She has supervised clinical and administrative teams across outpatient imaging, behavioral health, and residential care settings, with a track record of improving workflows, patient satisfaction, and team performance. Brittney holds a BSN from the University of Wyoming and is currently pursuing certifications in physician practice management and project management. She is dedicated to making sure every patient's experience at Top Tier is seamless, warm, and exceptional from start to finish.

Heather Bradshaw

Heather Bradshaw

Patient Liaison

Heather brings a rare combination of concierge medicine experience and genuine hospitality to her role as Patient Liaison. She has worked directly alongside providers in a concierge aesthetics practice, assisting with pellet insertions, body composition analysis, and day-to-day patient coordination, while also bringing a background in medical assisting, HR, and patient scheduling. Heather is known for her adaptability, problem-solving, and warm, personal touch with every patient she meets. She's committed to making sure every visit to Top Tier feels welcoming, organized, and exceptional.

Dr. Jonathan Gallen, MD, provides collaborative oversight and support for the physician associates at Top Tier Precision Health. With over 40 years of medical experience, Dr. Gallen offers guidance and expertise as needed to support the comprehensive care provided by the Top Tier team. Dr. Gallen earned his medical degree from the Medical College of Georgia and has a distinguished background in anesthesiology and medical aesthetics. While he is not directly involved in patient care, his collaborative presence ensures that the team adheres to the highest medical standards, enhancing the advanced therapies and wellness programs offered at Top Tier. By working in partnership with Dr. Gallen, the physician associates at Top Tier deliver personalized, patient-centered care, combining hands-on expertise with the assurance of collaborative medical oversight.

Ready to meet your team in person?

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