PA-C Mark Rosen

Dr. Haleem Mohammed

Dr. Haleem Mohammed, MD, MBA, is the Chief Medical Officer of Gameday Men’s Health and a board-certified internal medicine physician specializing in hormone optimization, longevity medicine, and men’s health. He leads award-winning clinics in Aventura, Boca Raton, and Weston, FL.

FNP Matthew Miler

Matthew Miller, FNP-C, is a board-certified Family Nurse Practitioner and Clinical Director of Gameday Men’s Health Gilbert and Goodyear. He specializes in hormone therapy, peptide medicine, regenerative treatments, and performance-focused men’s health.

PA-C Christopher Tagliavini

Christopher Tagliavini, PA-C, is the Clinical Director and Owner of Gameday Men’s Health Middletown, CT. With 10+ years in urology and men’s health, he specializes in testosterone therapy, ED treatment, and personalized men’s wellness care.

Dr. Alan Armstrong

Dr. Alan Armstrong, MD, is a board-certified Emergency Medicine physician with over two decades of experience and a focus on patient-centered care. He currently serves as Medical Director at Gameday Men’s Health, where he helps men improve their health through evidence-based, personalized treatment plans.

Dr. Justin Hall

Dr. Justin Hall is a board-certified orthopedic spine surgeon and the Medical Director of Gameday Men’s Health Madison. He specializes in spinal reconstruction and men’s health optimization, including hormone therapy and peptide treatments.

FNP Esther Selik

Esther Selik, FNP, is the Clinic Director at Gameday Men’s Health Birmingham/Bloomfield. She specializes in testosterone therapy, medical weight loss, sexual wellness, and peptide treatments with a focus on personalized, evidence-based men’s healthcare.

Dr. Kyle Ricord

Dr. Kyle Ricord, MD, is a Calgary-based physician specializing in family and emergency medicine. He serves as the Medical Director and Owner of Gameday Men’s Health Westsprings, where he focuses on hormone optimization and preventative men’s health strategies.

Dr. Alonso Osorio-Giraldo

Dr. Alonso J. Osorio-Giraldo, MD, is a dual board-certified physician with 24 years of clinical experience in family and emergency medicine. As Medical Director and Owner of Gameday Men’s Health East Texas, he specializes in hormone optimization, performance medicine, and regenerative therapies.

PA-C Mark Rosen

Mark Rosen, MMS, PA-C, is the Co-Owner and Clinical Director of Gameday Men’s Health. With a background in emergency and sports medicine, he specializes in hormone optimization, peptides, and strength-focused preventive care. His patient-first philosophy is rooted in listening with intent, building trust, and creating targeted wellness plans that deliver measurable results.

PA-C Rob Lininger

Rob Lininger, MPAS, PA-C, is a board-certified physician assistant and franchise administrator at Gameday Men’s Health. With a passion for men’s health, functional medicine, and sports medicine, he brings a holistic, lifestyle-focused approach to optimizing energy, performance, and wellness in his patients.

Dr. Yesenia Viera

Dr. Yesenia Viera, MD, MSN, APRN, is a board-certified nurse practitioner and medical graduate with advanced training in hormone optimization, preventive men’s health, and evidence-based wellness. As Clinic Director and National Clinical Trainer at Gameday Men’s Health in Weston, FL, she leads with clinical excellence while mentoring providers across the country and helping men improve their vitality and long-term well-being.

Dr. Robert Young

Dr. Robert Young, DO, is a board-certified emergency medicine physician with over 15 years of experience in clinical leadership, medical education, and integrative men’s health at Gameday Clayton. As a member of the Gameday Men’s Health Medical Advisory Board, he is also committed to delivering personalized, preventative care that challenges the limitations of traditional, insurance-driven healthcare systems.

Dr. Leigh Vinocur

Dr. Leigh Vinocur is a board-certified physician with over 30 years of experience in emergency and ambulatory medicine. As the Medical Director of Gameday Men’s Health in Owings Mills and Frederick, MD, she blends traditional and integrative medical expertise to support men’s hormonal and metabolic health. She is a leader in medical cannabis science and a recognized media contributor in national health communications.