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Meet the ISDPA Board

ISDPA Mission Statement

The ISDPA is organized to promote the professional and personal development of Physician Assistants in the State of Illinois in the practice of quality, cost effective, and accessible health care in the medical specialty of dermatology. The ISPDA will also promote the Physician/PA relationship of the health care team in the practice of patient centered medical care.

Introducing the ISDPA Board of Directors

Jang-Mi Johnson, PA-C

Vice President
Andrew Mastro, PA-C

Sarah Anderson, PA-C

Director at Large
Jordan Stemer, PA-C

“JangMi Johnson graduated from the Cook County Hospital/Malcolm X College PA program in 2002.  She began her career in general surgery working for the underserved at Provident Hospital of Cook County.  She honed her surgical skills that would take her to the next level of practice, Dermatology!  In 2005, she started her first dermatology job and has continually worked in the field, minus a short stint in NYC for pandemic relief work in 2020.  Her professional interests include leadership, psoriasis, skincare for BIPOC patients, hair loss, aesthetic dermatology, and anything that grows in/on the skin or makes one itchy.

In her free time, she takes epic roadtrips with her family, sews formal wear for women, and is working to bring an elegant skincare line to market, in the near future.”

Andrew is a board-certified Physician Assistant (PA), completing his Master of Science in physician assistant studies at Rush University College of Health Sciences, Chicago. He completed his Bachelor of Science at Indiana University, graduating with honors. He is a guest lecturer and trains PA students at Rush University while serving in the same capacity at Northwestern University.

Andrew holds executive board positions as the acting Vice President of the Illinois Society of Dermatology Physician Assistants (ISDPA), as a Rising Editor on the Editorial Board of the Journal of Dermatology Physician Assistants (JDPA) and is a committee member of the Society of Dermatology Physician Assistants (SDPA). In addition to clinical dermatology, Andrew serves as both a consultant and speaker for numerous pharmaceutical entities, and a sub investigator in multiple active clinical trials. He joined DeNova research in 2019, focusing on advancing treatment within the inflammatory landscape. Andrew has a special interest in atopic dermatitis and psoriasis, though his practice spans medical, surgical, and cosmetic dermatology.

Andrew is an artist, triathlete, and avid live music fan outside the clinic. He also spends many of his “vacations” on hiking expeditions and adventure trips.

Andrew M. Mastro, M.S., PA-C
Vice President, Illinois Society of Dermatology Physician Associates
IDI | Loop, Chicago
Hello! My name is Sarah Anderson, and I am the current Secretary/Treasurer for the ISDPA. After attending Indiana University and Midwestern University for my education, I started my career in dermatology, and have been working in this speciality ever since. I became an ISDPA member in 2019, then joined the ISDPA Board of Directors in 2021. In addition, I am both an AAPA and SDPA member, and became an SDPA Diplomate Fellow in 2020. 
I am grateful to have the opportunity to practice in this specialty and serve on the ISDPA Board of Directors. I believe advocacy for one’s career is important, and I am excited to continue to work with the ISDPA to represent and support dermatology physician assistants. I have found my membership with ISDPA and my position on the board to be beneficial both academically and professionally; I have been able to learn tips and tricks to incorporate into my daily practice, as well as network with many professional colleagues. I look forward to continuing to serve on the board and work with all ISDPA members! 

Jordan Stemer-Miranda is a certified physician assistant with more than a decade of clinical dermatology experience. Since 2010, she has been practicing dermatology in Munster and Schererville, Indiana. She’s an expert in treating a wide array of skin conditions as well as a skilled cosmetic dermatology provider, specializing in non-surgical, anti-aging solutions and overall aesthetics. Through her career, Jordan has earned the trust and respect of her diverse community through her comprehensive care, approachable bedside manner and ability to communicate fluently in English and Spanish.

Jordan is a native Northwest Indiana resident and a graduate of Indiana University-Bloomington with degrees in Healthcare Administration and Biology. She completed her Masters of Medical Sciences at Rosalind Franklin University and was certified as a physician assistant in 2010. Jordan became a Diplomate Fellow of the Society of Dermatology Physician Assistants in 2020 and was honored to become elected as Director at Large of the Illinois Society of Dermatology Physician Assistants in 2023.

Jordan spends her free time with her husband and two daughters at her Valparaiso home. She enjoys traveling, wine tasting, and entertaining.