Welcome to

Dermatology Associates

Professional Skin Care in Tinley Park & Palos Heights

Regardless of age, the health of your skin can affect you physically and emotionally. Heredity, hormones, sun and the passage of time all make your skin vulnerable to changes. We know your comfort and appearance greatly impacts how you feel and how others feel about you.


At Dermatology Associates our goal is to not only make you more comfortable in your own skin, but also help you take back what time has stolen. From the youngest most delicate skin to the oldest most fragile skin, our medical staff is here to diagnose, treat and consult with you on the best treatments for your ultimate results. Come in and see what expertise and technology can do for you.


Skin Cancer

At Dermatology Associates we provide the most comprehensive and technologically advanced options currently available for the treatment of skin cancers. Dermatology Associates is the only practice in the area that offers noninvasive superficial radiotherapy as an option for surgical treatment in carefully selected cases.

Mohs or Microscopically Controlled Surgery
Superficial Radiotherapy (SRT)


Vivek Iyengar, M.D.

Vivek Iyengar, MD is a board-certified dermatologist and fellowship-trained Mohs surgeon who specializes in skin cancer management and reconstructive surgery and started his practice in 2003.

Dr. Iyengar completed his undergraduate education at Johns Hopkins University and obtained his medical degree at the University of Miami. He completed his dermatology residency at Baylor College of Medicine in Houston, Texas where he served as chief resident.

Dr. Iyengar had a unique fellowship training experience in completing a Mohs, laser, and cosmetic surgery fellowship in Boston, Massachusetts under the direction of faculty from Boston, Yale, Dartmouth, and Harvard Universities.

Dr. Iyengar has lectured nationally and published numerous journal articles and book chapters in the fields of Mohs, laser surgery, and cosmetic surgery. Dr. Iyengar is also a Clinical Associate Professor at the University of Chicago, Section of Dermatology.

Manuel Mesirow, M.D.

Manuel Mesirow, MD is a graduate of the University of Michigan medical school. He completed his dermatologic training at the University of Chicago in 1980. Before relocating his practice to Tinley Park, Dr. Mesirow was in private practice in Flossmoor for over 20 years. He has been a member of the staff at Advocate South Suburban Hospital and St James-Franciscan Alliance Hospital campuses in Chicago Heights and Olympia Fields for many years.

Dr. Mesirow is board certified by the American Board of Dermatology and is an active member of the American Academy of Dermatology as well as the Chicago Dermatologic Society. He is available to treat general dermatology patients at the Tinley Park location.

Tia M. Pyle, M.D.

Tia M. Pyle, MD is a dermatologist who completed her medical training in the Philadelphia area at Cooper University Hospital after graduating from Drexel University College of Medicine. After obtaining her undergraduate degree at DePauw University, she left her home state of Indiana to pursue her medical training and has now returned closer to home with her husband and two boys to practice dermatology.

Dr. Pyle’s interests are broad as a general dermatologist and range from skin cancer screening, surveillance, and surgical treatment to the treatment of common inflammatory conditions of the skin including acne, rosacea, psoriasis and extending to skin conditions in children such as atopic dermatitis, common skin infections and rashes of childhood.

Ralph Fiore II, D.O.

Dr. Ralph Fiore II is a Board Certified Dermatologist specializing in medical and surgical Dermatology with an emphasis on the detection and treatment of premalignant and malignant conditions of the skin.

A Chicago native, Dr. Fiore received his undergraduate degree in Sports Medicine form Aurora University, as well as his Bachelor of Medical Sciences in Physician Assistant Studies from Midwestern University in Downers Grove, IL. While working as a Physician Assistant, Dr. Fiore returned to Midwestern University to earn his Doctor of Osteopathic Medicine.

During his training he was awarded the Department of Family Medicine Award for Academic Excellence and the Dr. Lowell Goldberg Memorial Scholarship for Clinical Excellence. Dr. Fiore completed his Rotating Internship at Illinois Masonic Medical Center in Chicago, and his Dermatology Residency at Nova Southeastern College of Osteopathic Medicine / Largo Medical Center in Largo, Florida. Throughout his training, Dr. Fiore authored medical articles that were published in well-known Dermatological Journals as well as presented at national conferences.

Dr. Fiore is a Fellow of the American Osteopathic College of Dermatology, were he currently serves on the Board of Trustees as an executive, currently holding the position of vice president.

When not at work, Dr. Fiore enjoys traveling with his family, and spending time on the golf course with his kids.

Michelle Ovando, P.A.-C.

Michelle Ovando, PA-C, joined our staff in 2005 as a board-certified physician assistant. She is a health professional licensed by the state of Illinois since 2003, with national certification to practice medicine under the direction of a physician. Michelle graduated from and completed her physician assistant education at, the Rutgers University of Medicine and Dentistry of New Jersey.

She received specialized dermatology training under Dr. Joseph Eastern in Newark, New Jersey. Additionally, Michelle was previously in practice at a dermatology practice in Downers Grove, IL. Michelle’s practice encompasses general dermatology and skin surgery. Her cosmetic services include BOTOX, Voluma, Juvederm, and Radiesse as well as V Beam laser, Dermapen, sclerotherapy injections for spider veins, chemical peels, and microdermabrasion. Patients may schedule directly with her at our Tinley Park location for any of these services.

Trina Brucato, P.A.-C.

Trina Brucato, PA-C is a board-certified physician assistant. She is a health professional who first joined our staff in 1996 as a registered nurse. In 2008, she took a leave of absence to pursue her physician assistant certification. Having completed her training at Midwestern University and with a background in dermatology, Trina is available to serve our general dermatology patients at both the Tinley Park and Palos Heights locations.

In addition to general dermatology, Trina’s cosmetic services include chemical peels and Dermapen. Appointments may be scheduled directly with her at both locations.

Mary Kate Mineman P.A.-C

Mary Kate Mineman is a board-certified physician assistant who received her specialized dermatology training here at our practice under Dr. Vivek Iyengar.

Mary Kate received her master’s in physician assistant studies through Marist College in New York and completed her undergraduate studies at the University of Illinois. She is an active member of the American Academy of Physician Assistants (AAPA), Illinois Academy of Physician Assistants (IAPA) and the Society of Dermatology Physician Assistants (SDPA).
Prior to joining Dermatology Associates, Mary Kate worked in an emergency department where she developed a solid foundation of medicine and a further passion for helping others. Her top priority is to provide high quality, patient centered care to both children and adults.

Mary Kate enjoys teaching patients skin care regimens that will help them put their best face forward. Her interests are broad and range from skin cancer screening, and hands on procedures such as biopsies and injections, to the treatment of common dermatological conditions such as acne, rosacea, eczema and psoriasis.

Outside of providing dermatology care to children and adults, Mary Kate finds joy in playing and coaching volleyball as well as spending time with her newly adopted puppy named Bosley.

Mary Kate is practicing at both the Tinley Park and Palos Heights locations. For an appointment with Mary Kate Mineman, please contact our office at (708) 444–8300.

Jennifer Dudak P.A.-C.

Jennifer Dudak is a board-certified physician assistant specializing in dermatology.
She received her degree through Southern Illinois University-Carbondale and is an active member of the Society of Dermatology Physician Assistants (SDPA), the American Academy of Physician Assistants (AAPA) and the Illinois Society of Dermatology Physician Assistants (IL SDPA).
Prior to obtaining her degree, Jennifer served as a Medical Laboratory Technician in the United States Air Force.  While serving, she was awarded the Achievement Medal given to those for outstanding or meritorious service. 
Jennifer has been practicing dermatology in and around the southwest suburbs since 2003.
Her focus is in general dermatology skin conditions with special interest in acne, warts, psoriasis, eczema and full body skin exams.
Jennifer’s goal is to provide both children and adults’ comprehensive dermatologic care.
When she is not practicing, Jennifer enjoys reading fiction, cooking and spending time with her family and dog Lily Beans.
To schedule an appointment with Jennifer Dudak, PA-C at either of our locations please call 708.444.8300.

Alexis Fischl, LE

Alexis Fischl is a licensed esthetician who received her training through Paul Mitchell School. After receiving her license, she attended the National Laser Institute where she became certified in laser therapies, IPL (intense pulsed light therapy) and micro needling.

Alexis’s passion for skin care began with her own skin story. As with many young adults, Alexis struggled with acne and tried different therapies including various face washes and creams to improve the look and health of her skin. With seeing little change in her skin’s overall health, she sought the care of Michelle Ovando PA-C, a physician assistant here at Dermatology Associates. After seeking her professional care Alexis’s skin began to clear and her confidence grew. Realizing the impact that healthy skin had on her she decided to pursue a career as an esthetician to help others improve the health of their skin and gain confidence too.

Alexis joined Dermatology Associates in 2018 and offers the following services at our Tinley Park location:

  • Custom facials
  • Chemical peels
  • Microdermabrasion
  • Laser Hair removal
  • Tattoo removal
  • Carbon peel laser
  • Q switch
  • Pharos
  • Photodynamic therapy
  • For a free consultation with Alexis or to receive more info
Scott Tuffle, MD

Scott Tuttle, MD

Scott Tuttle, MD is a dermatologist specializing in both medical and surgical dermatology. He completed medical school at the University of Pennsylvania School of Medicine. Scott went on to finish his dermatology residency at the Mayo Clinic in Rochester, Minnesota, where he served as the Chief Resident. Dr. Tuttle understands the importance of putting the needs of his patients first and is excited to be joining Dermatology Associates to continue providing patient centric care. He has multiple publications in leading journals in both surgical and medical dermatology.

Before starting his career in medicine, Scott grew up in Wisconsin and attended Northwestern University where he studied biomedical engineering as an undergraduate. While at Northwestern, he was the cadet commander of Chicago Army ROTC and commissioned as an engineer officer in the US Army. Dr. Tuttle spent 4 years on active duty, including a deployment to Afghanistan as the Chief Engineer for a Special Operations Task Force. He rose to the rank of Captain before leaving the military to pursue his dream of becoming a physician. Dr. Tuttle and his family have moved to the south suburbs and he looks forward to serving patients in New Lenox and Tinley Park.