
Michigan's Top Skin Health Experts
As Michigan’s leading dermatology experts, our team at Ganger Dermatology is dedicated to advancing the science of skin care with excellence. Our board-certified dermatologists are active members of the American Academy of Dermatology and the American Society of Dermatologic Surgery, continually embracing the newest, safest, and most effective practices in skin health. While we take pride in our credentials and accomplishments, we’re driven by an ongoing commitment to growth and exceptional care.
The ever-evolving field of dermatology inspires us to remain at the forefront, integrating the latest advancements in laser and injectable treatments to provide optimal patient care. At Ganger Dermatology, your skin health is our top priority. Learn more about our expert providers below or find a Ganger Dermatology location near you.
Laura Ganger

In addition to her medical practice, Dr. Ganger continues to teach students, residents, and practicing MD’s in various capacities. She is an expert in both general and cosmetic dermatology and is frequently asked to be a speaker on complex medical conditions and/or treatment options.
Angela Ferrell (Rondina)
Dr. Ferrell (Rondina) is a skin cancer specialist, who focuses on diagnosing and treating skin cancers, in addition to taking care of a full spectrum of medical dermatology concerns. She enjoys providing care for all age groups and is dedicated to educating her patients and the community on the importance of preventative skin care and sun protection.
Megan Iacco
Dr. Iacco practices at our location in Plymouth, MI, and specializes in medical dermatology. She is an expert in the diagnosis and treatment of skin cancer in addition to the full spectrum of general and complex dermatologic concerns. Dr. Iacco is committed to providing empathetic and excellent care for her patients.
Kathryn Michels
Dr. Michels is a board-certified dermatologist specializing in medical dermatology, with a focus on diagnosing and treating chronic skin conditions, complex rashes, and skin cancer with personalized care.
Thy Thy Do

Dr. Do joined Ganger Dermatology in the Fall of 2018. Dr. Do has extensive experience in general clinical dermatology, complex medical dermatology, skin cancer, clinical research and education. Dr. Do was an Assistant Professor of Dermatology at the University of Michigan where she completed her internship and residency.
Leela Hamp

Bio coming soon!
Allison Darland

Dr. Darland earned her medical degree from the University of Michigan Medical School, completed her transitional year at St. Mary Mercy Health System in Livonia, MI, and finished her dermatology residency at the University of Michigan. Dr. Darland brings extensive expertise in treating of a vast range of skin conditions and skin cancer.
Bonnie Mathai

Dr. Mathai received her medical degree from Wayne State University School of Medicine. She then completed a transitional year internship at St. John Hospital, followed by her dermatology residency at Henry Ford Hospital. Throughout her career, Dr. Mathai has held dermatology faculty appointments at the University of California, Los Angeles; the University of California, San Diego; and the University of Michigan Department of Dermatology.
Dana Sachs
Dr. Sachs is a board-certified dermatologist and fellowship-trained Mohs surgeon who sees patients in our Ann Arbor office on Thursdays. She spent more than seventeen years on the faculty of the University of Michigan Department of Dermatology, where she rose to Professor of Dermatology and served as Chief of Medical Dermatology and Medical Director at the Taubman Center. Before that, she practiced at Memorial Sloan Kettering Cancer Center in New York City.
Dr. Sachs completed her ACGME-accredited fellowship in Mohs Micrographic Surgery at the University of Michigan, where she trained under our former Mohs surgeon, Dr. Tim Johnson. She is a Fellow of both the American Academy of Dermatology and the American College of Mohs Surgery, and has been recognized in Best Doctors in America and the Guide to America’s Top Dermatologists. Her research on skin aging and non-invasive procedures has been published widely, and she brings that same precision to every Mohs case.
Bryan Sofen
Dr. Sofen is a board-certified dermatologist and fellowship-trained Mohs surgeon who performs Mohs surgery in our Ann Arbor office on Mondays. He is certified by the American Board of Dermatology in both dermatology and Mohs Micrographic Dermatologic Surgery, with a focus on skin cancer and aesthetics. He is a Fellow of both the American Academy of Dermatology and the American College of Mohs Surgery.
Dr. Sofen serves as Chief of Dermatology at Beaumont Hospital, Royal Oak, and is a Clinical Assistant Professor at both the Oakland University William Beaumont School of Medicine and the Wayne State University School of Medicine. He earned his medical degree from Wayne State and graduated with honors from the University of Michigan.
Krista McCarver

Krista has been a valued member of the Ganger Dermatology team since January 2017. Prior to joining the practice, she spent 12 years as a surgical Physician Assistant. She has a strong clinical interest in treating acne, warts, dermatitis, and other skin conditions. In addition to her clinical work, Krista serves as adjunct faculty at Mercy College of Ohio, where she teaches Physician Assistant students. Outside of work, she enjoys spending time with family and friends, traveling, and reading—often making her way through an impressive number of books each year.
Tony Diegel

Erin Turri

Bio coming soon!
Terri Squires

Leah Harris

Bio coming soon!
Kelley Reynolds

Bio coming soon!
Madison Williams

Bio coming soon!
Erika Nielsen

Erika is a Registered Nurse with an Associate’s Degree in Nursing from Monroe County Community College and a Bachelor of Science in Nursing from the University of Michigan. With over a decade of experience in dermatology, Erika works both as an aesthetic injector and as a Mohs surgical nurse. Outside of work, she is often found at the hockey rink, cheering on her three sons.
Appointments Available in Ann Arbor, Plymouth, and Wixom, MI
At our Ann Arbor, Plymouth, and Wixom locations, Ganger Dermatology goes beyond exceptional care by prioritizing compassion, precision, and the latest advancements in skin science. If you’re managing a persistent or complex skin condition, our experts are here to offer advanced, customized treatment options. Or, if you’re considering innovative cosmetic treatments like injectables, our board-certified specialists provide trusted guidance and expert care.
Schedule your appointment today to discover the Ganger Dermatology difference!