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Invited Faculty

The following esteemed faculty have been invited to lecture at the AMIFAS Cadaver Lab Seminar February 22-24, 2023 in Orlando.


Dr. TJ Ahn is a first-generation Korean immigrant who came to America alone when he was only 19 without any connections or ability to speak English. Determined to live the American Dream, Dr. Ahn spent the next 30 years honing his medical and business skills such as medical marketing and building a hybrid-concierge model practice.

Dr. Ahn has established a successful podiatry practice specializing in minimally invasive foot & ankle surgeries in the Chicago area. As a leader in his industry, Dr. Ahn has spoken at many lectures, conferences and seminars sharing his knowledge, experience and vision for the future. He is an active Associate Professor at the Academy of Minimally Invasive Foot & Ankle Surgery. 

He also has taught students at Rosalind Franklin University/Scholl College of Podiatric Medicine as a surgical lab instructor.

Fernando Sancho Barroso, MD

  1. Orthopedic surgeon

  2. Director and professor of Minimally Invasive Surgery Courses at the National University of Mexico

  3. Professor of Percutaneous Surgery Courses in Barcelona Spain

  4. Former President and Professor of the Ibero-American Group of MIS Surgery

  5. Professor of AMIFAS

  6. International member of AAOS

Richard Cowin, DPM

Dr. Richard M. Cowin, DPM, is the director of Laser Foot Surgery Specialist of Orlando, Florida. He is an acclaimed lecturer, practitioner, and pioneer in the field of Minimally Invasive and Laser Foot Surgery. Dr. Cowin has been board certified by the Minimally Invasive Foot & Ankle Surgery Division of The American Board of Multiple Specialties in Podiatry, The American Board of Ambulatory Foot Surgery, The American Academy of Pain Management, and The American Board of Quality Assurance & Utilization Review Physicians. He is also a Fellow of The Academy of Minimally Invasive Foot & Ankle Surgeons (formerly the Academy of Ambulatory Foot & Ankle Surgery) and has served as a board member, president, vice-president, treasurer, secretary, scientific chairman, and has chaired the Standards of Care and Preferred Practice Guidelines Committee. In 2006, this fine organization honored Dr. Cowin by presenting him with their prestigious Hall of Fame Award. Dr. Cowin has lectured extensively in the United States and abroad. You may have seen some of Dr. Cowin’s many television appearances as a podiatric medical expert on Weekend Edition, QVC, American Medicine Today, HSN, Meet The Doctors and “AskDrRich.”

Ali El Kohen, MD

Dr Ali EL KOHEN is an orthopedic surgeon, graduate of University of Marseille (France) in 1993 and private practice in Casablanca (Morocco) over 25 years of experience. He started MIS foot and ankle surgery since his first seminar in San Antonio (Texas) in 2009. He has been nominated by Stephen ISHAM as Regional Director for Morocco and Africa in 2011, participated at almost all AAFAS seminars and cadaver’s lab as lecturer and instructor. Dr Ali EL KOHEN is very passionate about percutaneous technique for foot disorders. He is board certified in a number of specialties and fellow of AAOS, AMIFAS, SICOT.

Michael Fanous, DPM, MS, MHA, FAMIFAS

Dr. Michael Fanous is a graduate of the Ohio College of Podiatric Medicine. He Completed his residency training at USC-County General Hospital in Los Angeles, California. Michael has a master’s degree in Health Administration and Gerontology from the University of La, Verne, California. He was a founder and former director of the residency training program and former Chief of Podiatric Surgery at Anaheim General Hospital, California. Dr. Fanous is a diplomat of the American Board of Multiple Specialties in Podiatry.

He is board-certified in Podiatric Surgery. Reconstructive Rearfoot Surgery, and Primary Care in Podiatric Medicine. Michael is a Fellow, Professor, and Member of AMIFAS. He also served as past President of AMIFAS.

Thomas Goldman, DPM

Dr. Thomas Goldman is a practicing NYC podiatrist since 1998. Doctor Goldman started out in private practice in midtown Manhattan, and eventually opened his own Park Avenue office, where he established himself. He then developed a strong rapport with local affiliated integrated medical doctors who appreciated his less invasive approach to podiatric medicine. Having realized the benefit to their patient population, these Doctors sought out Dr. Goldman, and requested that he join their practice.

Dr. Goldman was then honored to become a part of the largest integrated medical facility in NY, and eventually assistant professor at Mount Sinai Hospital where he practices today. Dr. Goldman regularly teaches the four year Mount Sinai residents MIS techniques.

Dr. Goldman is a strong advocate of the academy and has been a fellow since 2014.

Georg Hochheuser, MD

Bio coming soon.

Stephen Isham, MD, DPM

Dr. Isham has devoted his career not only to practicing the minimal invasive techniques, but also as Professor of Surgery to teach these procedures at home and abroad. His influence is prominent in many Central American, South American, European and Asian countries.

He has pioneered and published articles on many of the minimally invasive surgical procedures currently in use, and several of these techniques bear his name. He has received numerous honors worldwide for his work in this field.

Lawrence Kales, DPM

Lawrence J. Kales, DPM is originally from Brooklyn, NY and attended SUNY Stony Brook receiving a BS in Biology 1972. He then attended the Illinois College of Podiatric Medicine receiving his DPM degree in 1977. Dr. Kales completed his residency in Podiatric Medicine and Surgery at Coney Island Hospital in 1979. He is proud to be in private practice in Hudson, Florida since 1979 for 43 years and has been practicing MIFAS since 1982.

Throughout the years Dr. Kales has previously served the Academy in multiple positions including past Board Member and Scientific Chairman as well as being an Academy Fellow since 1983.

Dr. Kales is Board Certified in Ambulatory Foot Surgery by the ABFAS, Minimally Invasive Foot and Ankle Surgery by the ABMSP, as well as a Diplomate of the American Board of Lower Extremity Surgery.

He is very much looking forward to presenting an updated version of Dr. Milton Roven’s 1979 Gold Award “Intermedullary Lesser Metatarsal Decompression with Plantar Condylectomy” at this seminar.

Beth Klawitter, DPM

Beth Klawitter, DPM is current President of AMIFAS, board certified by the American Board of Multiple Specialties in Podiatry in MIS, and a Fellow of AMIFAS. She has been performing minimally invasive foot surgery for over 20 years. Her father had performed the art for 33 years starting in 1960. She learned her skills from other MIS surgeons who were taught by him and watching her father perform these surgeries for 10 years when she was managing his office.

Dr. Klawitter graduated from the Des Moines College of Podiatric Medicine and Surgery in 1999 and finished her residency in Grand Blanc, MI in 2001 under Irvin Kanat, DPM. She is currently practicing in Omaha, Nebraska.

Larry Kobak, DPM, JD

Bio coming soon.

John Longobardo, DPM, MD

Bio coming soon.

Richard Mann, DPM

Dr. Mann is a Podiatric physician and surgeon from the US.  Over the past 30 years, Dr. Mann has specialized in the treatment of peripheral neuropathy.  He is responsible for the introduction of benfotiamine, a highly successful and innovative treatment of peripheral neuropathy, into the US, Canadian, and other countries.  His protocols on the treatment of peripheral neuropathy are followed by thousands of physicians in the US.  He is the founder and Chief Scientific Officer of Realm Labs, LLC. 

Dr. Mann has lectured and written extensively on the topics of peripheral neuropathy, polyneuropathy, neurodegeneration, lower limb amputation prevention, diabetic pathobiology, vitamin B1 deficiency, and benfotiamine.  Dr. Mann is an international lecturer.  He is a consultant to industry and the medical community on improving clinical outcomes in the treatment of peripheral neuropathy and lower extremity amputation prevention.  Dr. Mann authors a newsletter, which is followed by thousands of physicians, in which he discusses new clinical approaches to the treatment of neurological diseases of the lower extremities, diabetes and its effect on the lower extremities, as well as other topics.

Borys Markewych, DPM

Bio coming soon.

Bryan C. Markinson

Bio coming soon.

Frank Mattes, MD

  1. Orthopedic surgeon
  2. General surgeon
  3. Founder and Board member of the section for minimally invasive foot surgery (German society for footsurgery (Gffc)
  4. MIFAS Instructor for Percutaneous Surgery Courses in Barcelona and Madrid  Spain
  5. Instructor for Percutaneous Surgery Courses in Innsbruck            (Austria)
  6. Instructor for Percutaneous Surgery Courses in Augsburg (German)
  7. Author of the Book: Current Techniques in Minimal Invasive Foot Surgery
  8. International Member of the EFAS
  9. Founder of the InterAlpes Foot And Ankle Academy (Germany)

Brant McCartan, DPM, MBA, MS

Dr. Brant McCartan has preformed over 1,500 MIS bunion surgeries over the past five years. He does not use internal fixation and walks his patients out of the operating room. Dr. McCartan currently sits on the board of AMIFAS. He is board certified by the American Board of Podiatric Medicine and the American Board of Foot and Ankle Surgery in both Foot Surgery and Reconstructive Rearfoot/Ankle Surgery. 

He is a fellow of The Academy of Minimally Invasive Foot & Ankle Surgery as well as the American Academy of Podiatric Sports Medicine. He serves as the medical director of Northwest Surgery Center in Milwaukee, WI. Feel free to check out some of his before and after photos on Instagram@toepicasso

Steve McClain, MD

Bio coming soon.

Hartley Miltchin, DPM

Hartley Miltchin is a graduate of the Illinois College of Podiatric Medicine. He has practiced Minimally Invasive procedures, exclusively, for over 40 years. He is very passionate about MIS and enjoys sharing his extensive clinical experience.

He is Past President of the Ontario Podiatric Medical Association, Past Executive Director of the Canadian Podiatric Medical Association and is board certified in a number of specialties. Hartley still currently practices in Toronto Canada.

Carmen Naranjo-Ruiz, PhD

Dr. Naranjo-Rutz graduated from Complutense University at Madrid with a degree in podiatry. She furthered her education at the University of Alcala de Henares for a degree in Biomechanics and Podiatric Surgery. Carmen holds a Masters’ Degree in clinical Medical Research from the University of Miguel Hernandez UMH in Alicante, Spain. She completed her Surgical Fellowship Program from the Ohio college of Podiatric Medicine. Dr. Naranjo-Ruiz is a fellow of AMIFAS and a Associate Professor.

Currently She is a Professor at the Catholic University of Valencia San Vicente Martir for MIS. Carmen is past president of AEMIS (Spanish Association of Minimally Invasive Foot Surgery). She has lectured on MIS in Spain and Abroad. Her private practice is located in Madrid, Spain.

Sheldon Nadal, DPM

Sheldon Nadal, DPM is a past president and professor of surgery of the AMIFAS. He has been performing minimally invasive foot surgery is his Toronto, Canada office since 1980. He has lectured in the United States, Canada, Spain, Italy and Israel on MIS and has written chapters on bunion surgery for three textbooks on minimally invasive foot surgery.


Dr. Beth Pearce graduated with honors from Ohio College of Podiatric Medicine in 1982 and after her PSR-1 residency, remained in Northeast Florida. She was a governor-appointed member of the Florida Board of Podiatric Medicine from 1999-2012.

Dr. Pearce is a fellow of the “Academy”, at present proudly holds the position of Vice President and serves on the AMIFAS executive committee. She is a Diplomate of ABPM. Dr. Pearce is also board certified by ABMSP (Foot and Ankle surgery, Primary Medicine, DFW and MIFAS. Aligning with fellow members of “The Academy” (AMIFAS) in 2018, she helped to establish the portfolio certification pathway for Minimally Invasive Foot and Ankle Surgery and continues her work today expanding this new and exciting sub-specialty recognition.

Her professional interests include minimally invasive foot surgery, wound resolution, as well as pain management intervention of the lower extremity.

She practices in St. Augustine, Florida as she has since 1984 and continues to bring her enthusiasm to the field of Podiatric Surgery and Medicine.

Lluis Castillo Sanchez, PhD

Dr. Lluís Castillo studied Podiatry at the University of Barcelona (1993) and received his PhD from the UVic-UManresa and the University of Barcelona. He trained in Minimal Incision Surgery of the Foot at the American University LSU Health New Orleans through the AAFAS (American Association of Foot and Ankle Surgery) of which he is Associate Professor. He has been President of AEMIS (Spanish Association of Minimal Invasive Foot Surgery between 2012-2016).

He is currently a professor of Surgery in the Degree in Podiatry at Manresa-Uvic, in the Official Master’s Degree in Integral Foot Surgery of the University of Barcelona and in the Official Master’s Degree in MIS Surgery of the Catholic University of Valencia.

Anthony Spitz, DPM

Bio coming soon.

Jordan Sullivan, DPM

Dr. Sullivan has a patient first approach to foot care and believes in minimizing disturbances to the lifestyle of the patient. His approach blends new techniques and technology with the innate ability of the body to heal, to get patients back to their normal lives as quickly as possible. 

Dr. Sullivan graduated from Scholl college in 2016 and completed his residency at Columbia St. Mary’s in Milwaukee, WI.  He practices in Denver, CO with a specialty in minimally invasive foot and ankle surgery.  He is board certified by the American Board of Podiatric Medicine.

Michael G. Warshaw, DPM, CPC

Michael G. Warshaw, DPM, CSFAC, CPC, CPODCS, COCS, CMSCS is a practicing podiatrist and a Certified Professional Coder with over 25 years of successful coding, management, and training experience for podiatric practices.

His local and national views come from active participation as a practicing podiatrist, having the distinction of being a Certified Professional Coder, and years of serving as a national lecturer concerning coding issues.

Dr. Warshaw’s experience is unique and comprehensive. He has had the additional advantage of participating in all facets of the Medicare Appeals Process, including Redeterminations, Reconsiderations, and Administrative Law Judge Hearings, as well as the appeals processes of most commercial insurance companies and state Medicaid programs. Dr. Warshaw has also served as an expert witness in the actual court system, at both the federal and state levels.

Dr. Warshaw is also the author of THE Podiatry Coding Manual, a comprehensive coding manual specific for podiatry that is updated on an annual basis.

This unique prospective provides Dr. Warshaw with the ability to provide solutions to insurance and coding problems from ‘real world’ experience.

Dr. Warshaw is committed to assist practices in learning to code appropriately, obtain the proper reimbursement, and to avoid the wrath of the carriers by coding and billing in an appropriate fashion.