


Weigh To Go Weight Loss Center operates in Knoxville, Tennessee, under the clinical direction of Mark Smith, PA-C, MPAS, DMS, who holds National Board Certification through the NCCPA and maintains active memberships in the American Academy of Physician Assistants, American Academy of Anti-Aging Medicine, and American Board of Longevity Medicine and Sciences. The clinic provides medically-supervised weight management programs that integrate metabolic health assessment, hormone optimization, and pharmaceutical interventions designed for patients who have not achieved results through diet and exercise alone. Each patient undergoes comprehensive metabolic testing and body composition analysis before beginning treatment, allowing the clinical team to identify underlying factors such as insulin resistance, thyroid dysfunction, or hormonal imbalances that may impede weight loss.
The center's pharmaceutical weight loss protocols include tirzepatide and semaglutide, both GLP-1 receptor agonists that work by regulating appetite, slowing gastric emptying, and improving insulin sensitivity. Tirzepatide, a dual GIP/GLP-1 receptor agonist, is prescribed for patients requiring more aggressive metabolic intervention, while semaglutide serves as an effective option for those with moderate weight loss goals or specific contraindications. These medications are administered via subcutaneous injection on a weekly schedule, with dosing titrated based on individual tolerance and response. The clinic also incorporates NAD+ (nicotinamide adenine dinucleotide) therapy to support cellular energy production, enhance metabolic function, and address age-related decline in mitochondrial efficiency. NAD+ is delivered through intravenous infusion protocols that range from single sessions to multi-week courses depending on patient goals related to energy restoration, cognitive function, and metabolic optimization.
Mark Smith's training in anti-aging and longevity medicine informs the clinic's approach to hormone replacement therapy, which addresses deficiencies in testosterone, estrogen, progesterone, and thyroid hormones that commonly contribute to weight gain, fatigue, and metabolic slowdown. Hormone panels are ordered through LabCorp or Quest Diagnostics, and replacement protocols use bioidentical hormones when clinically appropriate. The clinic treats men experiencing andropause-related weight gain and women navigating perimenopause or menopause who present with stubborn abdominal fat, muscle loss, and energy decline. Hormone optimization is coordinated with weight loss medications to create synergistic metabolic improvements, and patients receive ongoing monitoring through follow-up lab work and clinical assessments every 8 to 12 weeks.
Patients at Weigh To Go Weight Loss Center attend in-person consultations at the Knoxville facility, where initial visits include a full medical history review, physical examination, body composition scan, and discussion of weight loss goals and previous attempts. Follow-up appointments occur every two to four weeks during active weight loss phases, allowing the clinical team to adjust medication dosing, review dietary adherence, and address side effects such as nausea or gastrointestinal discomfort that can occur with GLP-1 therapies. The clinic provides nutritional guidance focused on high-protein, low-glycemic meal planning and offers optional IV hydration therapy sessions that deliver electrolytes, B vitamins, and amino acids to support patients experiencing dehydration or nutrient depletion during caloric restriction. Aesthetic medicine services, including treatments for skin laxity and body contouring concerns that may arise during significant weight loss, are available as adjunctive options for patients seeking comprehensive body transformation support.
Weigh To Go Weight Loss Center's 4.7-star Google rating across 51 reviews reflects patient feedback on the accessibility of the Knoxville location, the thoroughness of Mark Smith's clinical assessments, and the structured accountability provided through regular in-person follow-ups. The clinic does not offer telehealth consultations, which ensures that all patients receive hands-on clinical evaluation and direct access to the provider team throughout their treatment course. This in-person model allows for real-time adjustments to medication protocols, immediate management of adverse effects, and the integration of multiple treatment modalities—including hormone therapy, peptide administration, and IV nutrient support—under one clinical roof. Patients seeking medically-supervised weight loss in the Knoxville area will find a practice that combines pharmaceutical intervention with metabolic and hormonal optimization, delivered by a provider with specialized training in longevity medicine and anti-aging therapeutics.
Mark Smith· PA-C, MPAS, DMS
Mark Smith, PA-C, MPAS, DMS
President & CEO / Physician Assistant
Mark attended the University of TN Knoxville and obtained a B.S. in Microbiology and graduated the Summer of 2000. He then attended the University of Trevecca in Nashville TN and obtained a Master of Science of Physician Assistant Studies as of August 2002. Obtained National Board Certification through the NCCPA as a licensed medical provider as a Physician Assistant in December of 2002. Mark obtained a doctor of Medical Science degree with Clinical concentrations and distinctions in Primary Care, Internal Medicine, and Emergency Medicine in August 2018. He is also a member of various organizations such as the American Academy of Physician Assistants, the American Academy of Anti-Aging Medicine, and the American Board of Longevity Medicine and Sciences. He has over 150 CME hours in aesthetic training with advanced courses for medical providers including chemical peels, microdermabrasion, lasers, IPL, Botox, Collagen and mesotherapy.
Edith Smith
Office Manager
Edith has enjoyed working at Weigh To Go Weight Loss Centers for fourteen years. She is the parent of three beautiful children of whom her youngest son, Mark, is now her boss. Edith is also the proud grandparent of seven grandchildren, and one great grandchild. She enjoys her work by assisting all of the customers and likes meeting new people. Edith works at all four Weigh To Go Weight Loss locations.
Stacy Sherwood, Dental Hygienist
Weight Management Assistant
Stacy has been with Weigh To Go for 3 years. She has 2 children, Brooke and Cole. Mark Smith is Stacy's brother and she has assisted him in numerous procedures. Stacy works at all 3 offices as a multi-tasker. She is also employed as a Dental Hygienist.
Doddie Davis Lankford, MSN, FNP
Medical Provider / Nurse Practitioner
Doddie is a family nurse practitioner who has been employed with Weigh To Go Weight Loss Centers for 12 years. She has prior emergency and trauma experience. She also worked as a nurse practitioner in a local orthopedic surgical practice for over 11 years. Doddie graduated from UTC in 1993 with a Bachelors of Science in Nursing degree. In 1995, she graduated with her Masters of Science in Nursing from Emory University. She has been married for 17 years and has 2 children, 14 and 12 years old. Doddie has been injecting Botox and aesthetic fillers for over 9 years.
Alda Russell, Accounting degree from Draughn's Jr. College
Assistant
Alda has a degree in accounting from Draughn's Jr. College and has been employed in the business and health fields for several years. She has one daughter and a grandaughter. Alda currently works at the Knoxville and Oneida locations.
Amy Beffrey, FNP
Nurse Practitioner
Amy is one of our excellent family nurse practitioners who has been employed with Weigh To Go Weight Loss Centers for 9 years. Amy is married with a beautiful 12 year old daughter. She has experience with a variety of medical conditions/illnesses and with a personality that everyone loves, she treats each patient with the one on one care that they deserve.
Phentermine 37.5mg
FDA approved medication for weight loss prescribed to those patients who qualify through BMI and waist measurement
Semaglutide Injections
GLP-1 medication for appetite suppression, blood sugar balance, and metabolic reset. Weekly injections for sustainable weight loss.
Tirzepatide Injections
Dual-action GLP-1/GIP medication for appetite control, blood sugar regulation, and accelerated fat loss
NAD+ Injections
Coenzyme injection to boost metabolism, improve energy levels, reduce cravings, and support detoxification
MegaBurn Injections
Contains all lipotropic ingredients from Lipo Shot plus additional vitamins for metabolism and energy
B12 Injections
Helps body use fat and carbohydrates for energy, supports normal blood, cells, and nerves
Myoden Spray
Helps boost metabolism and increase cellular energy. Used for auto-immune disorders, memory loss, stress, herpes viruses, muscle & joint pain and chronic fatigue
Lipo-Plex Spray
Helps boost metabolism and increase cellular energy
Serotonin Spray (5-HTP Plus)
Contains GABA, L-Carnitine, 5-HTP, Vitamin B6 for appetite reduction, increased fat metabolism, reduced depression/anxiety, and improved sleep quality
IV Hydration Therapy
Supports hydration, recovery, and overall wellness
Hormone Therapy - Estrogen
Estrogen replacement therapy
Hormone Therapy - Low-T
Testosterone replacement therapy for men
My B Tabs
Sublingual tablets for fighting fatigue and assisting weight loss. Supports metabolic functions including energy production
Lipo BC
Tablets with Vitamin C, B12, Folic Acid, and B6 to support metabolism of fats, carbohydrates, and proteins
Vitabese Capsules
Appetite controller and fat & sugar binder with vitamins, minerals, and bulking agent
+4 more services — contact clinic for full list
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