Stan Tolkachjov, MD Stan Tolkachjov, MD Faculty Dr. Stan Tolkachjov is a double board-certified dermatologist and fellowship-trained Mohs micrographic surgeon with interests in skin cancers, Mohs surgery & complex facial reconstruction , pyoderma gangrenosum , neutrophilic dermatoses, cosmetics, and hair disorders & restoration. He is the Dallas-Fort Worth area Director of Mohs Micrographic & Reconstructive Surgery for Epiphany and has performed over 20,000 cases. He’s the Founder and Director of the ACGME-accredited Micrographic Surgery and Dermatologic Oncology Fellowship and Core Dermatology Residency Faculty at Baylor University Medical Center. He’s a Clinical Assistant Professor of Dermatology at UT Southwestern, Clinical Associate Professor at Texas A&M College of Medicine, and a Staff Dermatologic Surgeon at the Dallas VA Medical Center, serving our veterans. He’s also the current President of the Dallas Dermatological Society. He graduated from Emory University with a degree in Neuroscience and Behavioral Biology where he was on the varsity track and field team and played rugby. He then attended University of Tennessee College of Medicine graduating first in his class of 159 medical students where he was elected to the professionalism committee for 4 years, an AMA representative, president of the Student Surgical Society, and a member of the prestigious Alpha Omega Alpha honor society followed by a rigorous transitional year internship at the Methodist University Hospital at the University of Tennessee with a combined focus on medicine and surgery. He completed his residency at the world-renowned Mayo Clinic in Rochester, Minnesota, at which time it was ranked the #1 hospital in the world by U.S. News & World Report . He did a formal Mohs Micrographic Surgery and Dermatologic Oncology Fellowship at the Surgical Dermatology Group in Birmingham, Alabama, focusing on Mohs surgery and reconstruction, where he also practiced for the first few years of his career. Dr. Tolkachjov’s involvement in education and research/clinical trials has facilitated over 175 publications in major medical journals such as the Journal of the American Academy of Dermatology (JAAD) , Mayo Clinic Proceedings , Dermatologic Surgery , Journal of Investigative Dermatology , British Journal of Dermatology , International Journal of Dermatology , Journal of Drugs in Dermatology , Journal of Oral and Maxillofacial Surgery, Lasers in Surgery and Medicine, Dermatologic Clinics, Anais Brasileiros De Dermatologia, Orphanet Journal of Rare Disorders, and Pediatric Dermatology , amongst others. He has contributed chapters to several books with an international audience and has authored and edited 2 textbooks on Mohs surgery and complex facial reconstructive techniques, which include distinguished international panel of contributing authors. He has also edited 2 editions of Dermatologic Clinics . He continues to teach students, residents, and fellows with various speaking engagements nationally and internationally including venues such as New York, Amsterdam, Manila, Milan, Copenhagen, Manchester, Greece, Moscow, Taiwan, Geneva, Kuala Lumpur, Brazil, Berlin, and Vancouver, amongst others. He was also voted as Teacher of the Year by the dermatology residents at UT Southwestern in Dallas and Physician of the Year by Epiphany Dermatology in 2021. As a leader in the field of dermatology and Mohs surgery, he is an active member, frequent lecturer, and holds committee positions in the: American Academy of Dermatology (AAD) American College of Mohs Surgery (ACMS) American Society of Dermatologic Surgery (ASDS) European Academy of Dermatology and Venereology (EADV) International Society for Dermatologic and Aesthetic Surgery (ISDS) American Society for Laser Medicine & Surgery (ASLMS) California Society of Facial Plastic Surgery (CSFPS) O’Leary Society (Mayo Clinic Dermatology Alumni) European Society for Micrographic Surgery (ESMS) Skin Cancer Outcomes Consortium (SCOUT) Consortium for Harmonizing Outcomes Research in Dermatology (CHORD) Committees on which he has or is currently serving include: Mohs Appropriate Use Criteria (AAD) Mohs Micrographic Surgery Committee (AAD) Dallas Dermatological Society – President World Congress Fund Review Task Force (AAD) Former Chair of the Communications & Public Relations Committee (ACMS) Professional Conduct Committee (ASDS) Awards Work Group (ASDS) Journal Awards Work Group (ASDS) Journal of the AAD (JAAD) Editorial Mentorship Program (AAD) Communications & Public Relations Committee (ACMS) IDEA (innovation/development/evaluation/assessment) panel (AAD) Section of Hospital Dermatology Committee (Mayo Clinic Dept. of Dermatology) O’Leary Society Board of Directors – Mayo Clinic Dermatology Alumni Association Dr. Tolkachjov has done additional training with experts in the aesthetic field for fillers, neurotoxins, KYBELLA®, chemical peels, and lasers. When approaching a cosmetic patient, he strives for a natural and subtle appearance and treats each patient’s unique concerns while obeying anatomical symmetry and complementing the natural features of each individual. With cosmetics, he takes a conservative approach that fits a patient’s desired goals and budget. He’s one of around 50 physicians in the country trained on implantation of SCENESSE® for the treatment of erythropoietic protoporphyria. In his spare time, Dr. Tolkachjov enjoys coaching sports, trivia, travel, and spending time with his wife, two children and dog, Bella. His easygoing demeanor, outgoing personality, and enthusiasm for patient contributes to the welcoming environment of his dedicated team while his meticulous approach and precision allows for the highest cure rates and excellent aesthetic reconstructive outcomes. PS Winter Home

William Posten, MD William Posten, MD Faculty Dr. William Posten is a board-certified, fellowship trained Mohs Surgeon practicing in Dallas, Texas. He received his bachelor’s degree with honors from Harvard University and his M.D. degree from Yale University. He did his dermatology residency training at Northwestern University. He then completed a combined fellowship in Mohs Surgery and Procedural Dermatology at University of Texas Southwestern. Dr. Posten currently serves as President of the Dallas Ft Worth Dermatological Society. He previously served as Secretary-Treasurer of this prestigious organization. He is a Diplomate of the American Board of Dermatology, a Fellow of both the American College of Mohs Surgery and the American Academy of Dermatology, and a member of the American Society of Dermatological Surgery. Dr. Posten authors original research on novel surgical techniques and his findings are regularly presented in national surgical meetings. Recently, Dr. Posten has been featured on Top Docs of DFW, a television program highlighting the leading physicians of Dallas Ft-Worth show on channel 33 KDAF-TV. Dr. Posten is on medical staff at Medical Cities Hospital of Dallas, Presbyterian Hospital of Dallas, Baylor Hospital of Irving, and Zale Lipshy Hospital of Dallas. He teaches medical students and residents surgical skills at UT Southwestern Hospital, Parkland Hospital and the Dallas Veterans Affairs Hospital. Dr. Posten specializes in the treatment of skin cancers and other skin tumors. Dr. Posten believes in a compassionate, caring philosophy that is reflected in the clinical care that he provides. His hobbies include painting and sculpture. He is married with 2 children. He looks forward to meeting you at the Dallas, Las Colinas, and Highland Village offices. PS Winter Home

Barak Richman < Back Barak Richman Faculty Barak Richman’s primary research interests include the economics of contracting, new institutional economics, antitrust, and healthcare policy. His work has been published in the Columbia Law Review , the University of Pennsylvania Law Review , Law and Social Inquiry , the New England Journal of Medicine, the Journal of the American Medical Association , and Health Affairs . In 2006, he co-edited with Clark Havighurst a symposium volume of Law and Contemporary Problems entitled "Who Pays? Who Benefits? Distributional Issues in Health Care,” and his book Stateless Commerce was published by Harvard University Press in 2017. Professor Richman represented the NFL Coaches Association in an amicus curiae brief in American Needle v. The Nat’l Football League , which was argued before the U.S. Supreme Court in January 2010 and again in Brady v. The Nat’l Football League in 2011. His recent work challenging illegal practices by Rabbinical Associations was featured in the New York Times . And in 2020, he was a member of the Working Group on Platform Scale at Stanford University’s Program on Democracy and the Internet that proposed middleware as a solution to stem the economic and political power of dominant internet platforms. Professor Richman also is on the Health Sector Management faculty at Duke’s Fuqua School of Business and is a Senior Fellow at the Kenan Institute for Ethics. He won Duke Law School's Blueprint Award in 2005 and was named Teacher of the Year in 2010. He has had visiting appointments at Columbia, Harvard, and Stanford. Professor Richman has an AB, magna cum laude , from Brown University, a JD, magna cum laude , from Harvard Law School, and a PhD from the University of California, Berkeley, where he studied under Nobel Laureate in Economics Oliver Williamson. He served as a law clerk to Judge Bruce M. Selya of the United States Court of Appeals for the First Circuit, and from 1994-1996 he handled international trade legislation as a staff member of the United States Senate Committee on Finance, then chaired by Senator Daniel Patrick Moynihan. PS Home

Shane Chapman, MD, MBA < Back Shane Chapman, MD, MBA Faculty Title Professor of Dermatology Additional Titles | Positions/Affiliations Chair Department of Dermatology Medical Director, Supply Chain Value Analysis at Dartmouth-Hitchcock Medical Center Education Tulane University, BS 1990 University of Texas Medical School - Houston, MD 1995 Massachusetts Institute of Technology, MBA 2016 Program Dartmouth Cancer Center Professional Interests Psoriasis and Complex Inflammatory Skin Disease Immunotherapy of Melanoma Photodynamic Therapy PS Home

James Allred, MD < Back James Allred, MD Faculty James Allred, MD, MS, FAAD, is a dermatologist at Access Dermatology Clinic in Franklin and Glasgow, Kentucky, and Gallatin, Tennessee. Originally born and raised in the western United States, Dr. Allred has called southern Kentucky his home since 2015. During that time, Dr. Allred has lectured at national conferences, published academic articles, and founded multiple technology startups dedicated to improving patient care. He also was a founding member of the education committee for Advancing Innovation in Dermatology, a nonprofit dedicated to improving patient care through novel technologies and techniques. Before then, Dr. Allred completed his dermatology residency in Austin, Texas, where served as chief dermatology resident, patented multiple medical devices, and was a recipient of teaching awards and speaking awards, including from the Texas Dermatological Society. He completed his medical school training at the University of Utah, where he served as student body president during his fourth year, co-founded the Bench-to-Bedside research program, and was among the first students to be chosen to the Alpha Omega Alpha honor society for medical scholastic excellence. As an undergraduate at the University of Colorado at Boulder, he graduated Phi Beta Kappa with dual degrees in history with honors and summa cum laude in anthropology, where was chosen as the graduation speaker, having received the outstanding undergraduate award and outstanding senior thesis award in 2003. Dr. Allred is married with five beautiful children and has two large dogs. He gets the greatest enjoyment in life from them, especially when introducing them to his first love of the outdoors. One annual highlight for him is where he is able to take his family every year to the Colorado Rockies, where he leads the first and only continuing medical education hike that teaches dermatologists from around the country about how the environment (i.e. plants, sunlight, insect bites, etc) can negatively affect the skin. In 2021, Dr. Allred decided to establish Access Dermatology Clinic as the method to synthesize what he has learned as a clinician and an innovator to creatively and compassionately serve the people of southern Kentucky and northern Tennessee. PS Home

Clay Cockerell, MD, MBA, JD Clay Cockerell, MD, MBA, JD Symposium Managing Director Cockerell Dermatopathology , Founder & President Health Education Services sponsored by Lake Granbury Medical Center, Program Director, Residency Program Dermpath On Demand , Co-Founder & Educational Director Dr. Clay J. Cockerell is a world-renowned specialist in treating and diagnosing skin disorders and has diagnosed over three million biopsies. An internationally recognized pioneer in his field and double board-certified in dermatology and dermatopathology, Dr. Cockerell has been practicing medicine since 1986. He is currently the Founder & President of Cockerell Dermatopathology and the Program Director of the Health Education Services dermatology residency program sponsored by the Lake Granbury Medical Center. Also, Dr. Cockerell sees patients a few days per month to assist with resident training and to keep his clinicopathological skills sharp. Dr. Cockerell has held numerous leadership positions within several highly regarded medical associations. Most notably, he served as the President, Secretary & Treasurer and a member of the Board of Directors of the American Academy of Dermatology, President of the Texas Dermatological Society, and President of the Dallas Dermatological Society. Also, Dr. Cockerell holds leadership roles as Founder and President of Cockerell Dermatopathology and a former AmeriPath Board of Directors member. Dr. Cockerell and his wife, Brenda, had a lifelong dream of producing wine and, in 2005, purchased a vineyard in Calistoga, California. They now produce wine under the Coquerel Family Wine Estates label. Dr. Cockerel and Brenda have two children, Charles and Lillian, and they have been married for forty-six years. In addition, Dr. Cockerell and Brenda enjoy traveling, golf, and winter sports. PS Winter Home

Courtney Schadt, MD Courtney Schadt, MD Faculty Board Certifications: Dermatology Medical Degree: Vanderbilt University School of Medicine Residency: Vanderbilt University Division of Dermatology Internship: Internal Medicine, Vanderbilt University Medical Center Special Areas of Expertise: General Dermatology, Medical Dermatology, Skin Cancer Affiliations: Associate Professor of Medicine, University of Louisville Division of Dermatology PS Winter Home

Seemal Desai, MD < Back Seemal Desai, MD Faculty Dr. Seemal Desai takes pride in providing his patients with the highest level of dermatologic care. Dr. Seemal Desai is a Diplomate of the American Board of Dermatology, and a Board Certified Dermatologist. He graduated with honors from Emory University. He received his medical training at Morehouse School of Medicine in Atlanta, Georgia, and received his Doctor of Medicine degree with Magna Cum Laude with honors. Following medical school, Dr. Desai completed his medical internship in Internal Medicine. He then went on to complete his residency at The University of Alabama at Birmingham and served as Chief Resident for the Department of Dermatology. Dr. Desai has been active on a local, state, and national level with numerous medical organizations. His major accomplishments have been with the American Academy of Dermatology and the American Medical Association and many others, where he has held numerous elected and appointed positions. He is also actively involved in teaching and mentoring medical students and residents, and serves as Clinical Assistant Professor of Dermatology at The University of Texas Southwestern Medical Center. He has been involved in academic medicine for over ten years. In his free time, Dr. Desai enjoys spending time with his wife, daughter, and son, as well as traveling, trying new restaurants, meeting new people, playing trivia games, exercising and enjoying the outdoors. Dr. Desai takes great pride in providing his patients with the highest level of dermatologic care. Please contact our office for a personal consultation with Dr. Desai to decide which services may be right for you and your skin. PS Home

Chase Meredith < Back Chase Meredith Faculty Chase Meredith is the founder of Replay, a conversational-AI roleplay platform that helps improve conversational skills with focused practice sessions. Based in Orem, Utah, Chase leverages his background in AI and product development to build AI tools that bridge the gap between theory and hands-on practice for frontline teams. PS Home

Practical Symposium Winter | Faculty Faculty LEARN | SHRED | LEARN PS Winter Home Clay Cockerell, MD, MBA, JD Symposium Managing Director Read More Jennifer Cather, MD Faculty Read More Aaron Farberg, MD Faculty Read More Joy Mosser Goldfarb, MD Faculty Read More Stan Tolkachjov, MD Faculty Read More James Allred, MD Faculty Read More Roger Ceilley, MD Faculty Read More Whitney High, MD, JD, MEng Faculty Read More William Posten, MD Faculty Read More Antoanella Calame, MD Faculty Read More Melissa Costner, MD Faculty Read More Matthew Leavitt, DO Faculty Read More Ciaran Smythe, DO Faculty Read More

Practical Symposium | Winter Learn, Shred, Learn! January 29 - February 1, 2026 The Hythe | Vail, CO Registration LEARN | SHRED | LEARN PS Winter Home

Practical Symposium | Winter Learn, Shred, Learn! January 29 - February 1, 2026 The Hythe | Vail, CO Sign Up for Practical Symposium | Winter Updates LEARN | SHRED | LEARN PS Winter Home