Joan Guitart, MD Joan Guitart, MD Faculty Focus of Work Cutaneous T-cell lymphoma, Dermatopathology, Skin cancer prevention and detection Education MD: Autonomous University of Barcelona (1983) Postgraduate Training Resident: Univ. of Illinois Hospital, Pathology (1988) Fellow: Cleveland Clinic, (1989) Intern: Cleveland Clinic, Internal Medicine (1990) Resident: Cleveland Clinic, (1990) Certifications Board Certification: Anatomic Pathology & Clinical Pathology, American Board of Pathology Board Certification: Dermatopathology, American Board of Pathology Board Certification: Dermatology, American Board of Dermatology PS Winter Home

Business 201 Faculty < Back Mark Noble Founder In everything I do, I believe in the "Enrichment of Others!" It is core to who I am and what I offer the world. I train executives and their teams to reduce friction, increase productivity and accelerate company performance across the enterprise. The tools I install in the business enhance collaboration, improve communication and create accountability. My clients range from Stantec Engineering to Alaska Airlines. Industries where I have trained Market Force include mortgage banking, life insurance, architecture, real estate development, construction, commercial property management and logistics. In short, Market Force is industry agnostic. It fits anywhere human beings are charged with coordinating action together. With 25 years of hands-on experience leading commercial real estate brokerage firms, I have spent a majority of my career focused on sales productivity and coaching brokerage teams. I know what it takes to get individuals and teams performing at their very best. Central to my training is the Market Force Technology. Market Force is Human Performance Technology that gets leadership, teams and individual producers performing at ridiculously high levels. It is based on cutting-edge neuroscience and has been trained and taught to over 12,000 professionals in 38 countries. https://www.thenobleforce.com/ Business201 Home

Business 201 Faculty < Back Chris LeLash Sales Associate Christian LeLash teams with wife, Jennifer, to provide professional luxury real estate services to busy professionals. Together, the LeLash Group has sold millions in luxury properties with sales as high as $12 million. Chris and Jennifer have extensive knowledge of Dallas' real estate market, its private and public schools, and its neighborhoods. They specialize in handling discreet, private real estate transactions for high-net-worth families. Clients attest to Chris’ and Jennifer's professional, discreet, and seamless client service from beginning to end. In addition to real estate, Chris has twenty years of experience in consulting, financial analysis, business development, investments, and high-net-worth client service. He is also a private foundation trustee with experience in investment management, grantmaking, and board governance. Chris attended the University of Pennsylvania and The Wharton School as an undergrad and earned an MBA from New York University's Stern School of Business. Chris enjoys traveling with his family and coaching youth soccer and basketball. Chris and Jennifer are active members within the Shelton and Parish Episcopal school communities and volunteer their time to many charitable efforts close to their hearts. • D Magazine Top Producer 2016-2019 • Multi-Million Dollar Producer • Current or former Board Member, Lymphoma Leukemia Society, Turtle Creek Conservancy, and Wipe Out Kids’ Cancer. https://www.sothebysrealty.com/eng Business201 Home

Business 201 Faculty < Back Mary Nix Partner Mary Goodrich Nix is a Partner at LPHS with 25 years of experience handling complex commercial litigation. She frequently handles non-compete and trade secret litigation for publicly traded and privately held companies, including Fortune 500 , middle market companies, and startups in a variety of industries. Ms. Nix has extensive courtroom experience, including multiple jury trials, bench trials and injunction evidentiary hearings. She has arbitrated numerous cases throughout Texas and in other parts of the country. Mary is frequently called upon to assist companies when key employees move between competitors. In her work related to confidential information and trade secret protection, she advises clients in the identification of confidential information, trade secrets and other intellectual property assets and options for protection. Ms. Nix is Board Certified in Labor and Employment Law by the Texas Board of Legal Specialization. She has worked successfully with the U.S. Equal Employment Opportunity Commission (EEOC) , the U.S. Department of Labor (DOL) , the Texas Workforce Commission (TWC) and several other federal, state and local government agencies when a client is the subject of a complaint. Advocacy in this area includes responding to the complaint, negotiating where appropriate and advocating for her clients in administrative hearings. Frequent matters she handles include allegations of breach of contract, breach of fiduciary duty, tortious interference claims, Title VII claims, claims related to discrimination, harassment, retaliation and alleged violations of Americans with Disabilities Act (ADA), Fair Labor Standards Act (FLSA), Family and Medical Leave Act (FMLA), Families First Coronavirus Response Act (FFCRA), Age Discrimination in Employment Act (ADEA), Equal Pay Act (EPA) and alleged Occupational Safety and Health Act (OSHA) violations. https://www.lynnllp.com/ Business201 Home

Lawrence Eichenfield, MD < Back Lawrence Eichenfield, MD Faculty Dr. Eichenfield is chief of pediatric and adolescent dermatology at Rady Children's Hospital-San Diego and professor of dermatology and pediatrics and vice-chair of the department of dermatology at UC San Diego School of Medicine. He is board certified in dermatology, pediatric dermatology and pediatrics. After earning his medical degree from Mount Sinai School of Medicine in New York, Dr. Eichenfield was a pediatric resident and chief resident at Children's Hospital of Philadelphia. He then completed his dermatology residency at the Hospital of the University of Pennsylvania. Along with longstanding expertise in atopic dermatitis, acne, psoriasis and other inflammatory skin conditions, Dr. Eichenfield has interests in neonatal dermatology, vascular lesions, laser surgery and rare skin disorders. He has authored more than 400 journal articles, chapters, abstracts and books, and has served as the senior editor of "Neonatal and Infant Dermatology," published by Elsevier, as well as "The Eczemas." He served as editor-in-chief of Pediatric Dermatology for 12 years and currently serves on the editorial boards of multiple journals and periodicals. Dr. Eichenfield has held multiple leadership positions, including co-founder and co-chair of the Pediatric Dermatology Research Alliance, co-chair of the American Academy of Dermatology Guidelines for Atopic Dermatitis, co-chair of the American Acne and Rosacea Society/American Academy of Pediatrics Pediatric Acne Recommendations for Diagnosis and Treatment, member of the Expert Panel Member of the NIAID Guidelines for Diagnosis and Management of Food Allergy, Scientific Advisory Board of the National Eczema Association, and director of the Rady Children's/UC San Diego Eczema and Inflammatory Skin Disease Center. Additionally, he has served in leadership roles on guidelines and consensus statements for multiple dermatological conditions, including acne, rosacea, atopic dermatitis and psoriasis. Dr. Eichenfield enjoys running, reading, and skiing. PS Home

Kim Campbell < Back Kim Campbell Educational Consultant Kim Campbell is the Founder of Dermatology Authority and ClubDerm.com . She has established a medical communications agency focused on collaborations with key opinion leaders, publications, leading societies, and industry partners within the dermatology market. Kim holds a Master's degree in Health Education and Administration, bringing a blend of expertise in healthcare and education to the agency. Dermatology Authority has become a trusted resource delivering high-quality educational programs and partnerships that benefit the dermatology profession. DOD Home

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Here's a list of must-have dermatopathology educational textbooks. Educational Must Have Items Dermatopathology Dermatopathology is a specialized branch of pathology in which there has been great progress as new techniques have become available to evaluate the pathology of the skin. Many of the advances in our knowledge and understanding of the skin and the diseases that affect it have been made by people with experience of both diagnostic pathology and clinical dermatology. With significant numbers of large textbooks available, there is a need to provide practical clinical information and concise criteria for pathologic diagnosis for pathologists and dermatologists looking for up-to-date diagnostic and management options. Check Price Lever's Dermatopathology: Histopathology of the Skin - Twelfth Edition Used by generations of physicians who encounter patients with dermatological diseases, Lever’s Dermatopathology: Histopathology of the Skin comprehensively covers skin disease in which histopathology plays an important role in diagnosis. The updated 12th Edition, edited by Drs. David E. Elder, Rosalie Elenitsas, George F. Murphy, Misha Rosenbach, Adam I. Rubin, John T. Seykora, and Xiaowei Xu, maintains the proven, clinicopathologic classification of cutaneous disease while incorporating a “primer” on pattern-algorithm diagnosis. It features larger images throughout, as well as thoroughly revised content with new diseases and new information on pathophysiology and molecular pathogenesis—all in an easy-to-navigate, highly readable format. Check Price Dermatopathology: Expert Consult - Third Edition Offering a unique combination of expert online lectures, vast image collections both in print and online, and an easy-to-use print atlas, Dermatopathology, 3rd Edition, helps you master the complexities of this challenging and fast-changing subspecialty. Dr. Elston and his colleagues make dermatopathology easier to understand, leading you to efficient, accurate diagnoses of the most important common dermatologic findings seen in practice. Check Price Practical Dermatopathology - Third Edition Written from the perspective of both the histopathologist and clinician, Practical Dermatopathology, 3rd Edition, allows you to search by disease or pathologic feature to quickly locate key criteria and a differential diagnosis. Practical and portable, Practical Dermatopathology is your ideal high-yield microscope companion! Check Price Dermatology: Illustrated Study Guide & Comprehensive Board Review - Second Edition A fully-illustrated, note-packed volume of information, Dermatology: Illustrated Study Guide and Comprehensive Board Review fulfills a real need for a single study guide for the Dermatology Board Exam. Written by a previous Chief Resident of Dermatology at the University of Illinois at Chicago Medical Center, the text focuses on presenting comprehensive information in an easy-to-understand, easy-to-remember format. Check Price

Melissa Costner, MD Melissa Costner, MD Faculty A Texas native, Dr. Melissa Costner began her journey as a Dermatologist at UT Southwestern Medical Center, where she completed her training as a resident in dermatology. It was here, at UT Southwestern, where she developed an early and enduring interest in the skin manifestations of autoimmune disease. Dr. Costner welcomes self-referrals for skin problems such as acne, rosacea, and screening for melanoma and other skin cancers. As a D-Magazine ‘Best Doctor’ in 2025 and for the last 15 years, and recipient of the prestigious Legacy Award, Dr. Costner brings decades of experience to her patients. She values the lasting relationships she develops with her patients, many of whom she has helped for over 20 years. With her sharp clinical skills, and compassionate collaborative care, Dr. Costner goes the extra mile to ensure that they get the best possible care. PS Winter Home

Brion Hurley < Back Brion Hurley Faculty Mr. Brion Hurley is an independent Lean Six Sigma consultant helping organizations save money, improve quality and safety, mitigate risks, and enhance operational flow. My approach leads to higher employee, customer, and stakeholder satisfaction. Proven ROI: Organizations that apply Lean Six Sigma through improvement projects can recoup their training costs in under 3 months! With 25+ years of experience working in Aerospace, Food and Beverage, Healthcare, Automotive, Logistics and the Nonprofit sectors, I’ve helped organizations achieve the Triple Bottom Line (People, Planet, and Profit) by integrating process excellence with sustainability. Brion is also the author of "Lean Six Sigma for Good" and editor of "Lean Six Sigma for Good: Lessons from the Gemba," sharing insights on using improvement principles for social and environmental impact. Vision: To establish volunteer Lean and Six Sigma consulting support for nonprofits and NGOs in every city worldwide. Passions & Focus Areas: Clean Air and Water Zero Waste & Food Waste Reduction Vegan & Sustainable Lifestyles Solar Energy & Renewable Solutions PS Home

Darrell Rigel, MD, MS < Back Darrell Rigel, MD, MS Faculty Darrell Rigel, MD MS is an internationally acclaimed leader in the field of Dermatology with a focus on Melanoma, Skin Cancer, and Prevention. He has presented over 1000 lectures nationally and internationally on these subjects to physicians, government agencies, pharma, and the public. He regularly appears on CNN, Fox, ABC, and NBC, and his views are quoted in the New York Times, Wall Street Journal, and USA Today and he is the Team Dermatologist for the New York Yankees. He is a graduate of MIT with a BS in Management Information Science and an MBA (SM) from the MIT Sloan School of Management. While working as a research fellow at the National Cancer Institute, he obtained his MD from George Washington University. He completed an internship at New York Hospital-Cornell and a Dermatology residency and Dermatologic Surgery fellowship at New York University and currently serves as a Clinical Professor of Dermatology at the Mt. Sinai Icahn School of Medicine. Dr. Rigel has been a leader in Dermatology for over 3 decades having been selected by his peers to lead them as President of the American Academy of Dermatology, American Society for Dermatologic Surgery, and American Dermatological Association. He also served as Vice-President of the American Board of Dermatology during his 13 years of service there. Dr. Rigel is actively involved in national public health and healthcare economic policy initiatives serving as a consultant to government and industry. He is regularly called on for his expertise on these issues by White House administrations and has testified multiple times before Congress and the FDA. He also serves as the Scientific Co-Chair of the Fall and Winter Clinical Dermatology Conferences leading the effort to provide clinical education annually to over 2000 of his colleagues. In addition, he maintains a University-based practice at the Mount Sinai Icahn School of Medicine in Manhattan focusing on Melanoma, Skin Cancer, and related dermatological issues. 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