Prashant Singri, MD

Dr. Singri was born and raised in Ohio. He received his undergraduate degree from Youngstown State University and completed his medical training at Northeastern Ohio Universities College of Medicine. After internship at Rush Presbyterian St. Luke’s Medical Center, he completed a two year research fellowship at Northwestern University investigating therapies in the treatment of skin diseases such as psoriasis, atopic dermatitis, cutaneous lymphoma, vitiligo, and actinic keratosis (“precancers”). He completed his dermatology residency at the Department of Dermatology at Northwestern University, Feinberg School of Medicine.  After working at Northwestern for 7 years with a special interest in psoriasis and inflammatory diseases, he has now turned to focusing his efforts in Schaumburg full time. He continues to be a member of the faculty at Northwestern. He also continues to be involved in clinical trials research here in Schaumburg, investigating promising therapies for skin diseases. He is board certified by the American Board of Dermatology.

Dr. Singri and his family are proud supporters and volunteers at Kids Against Hunger – Fox Valley.


Dr. Singri is currently on staff at:

  • Northwestern Memorial Hospital (Chicago)
  • Alexian Brothers Medical Center (Elk Grove Village)


Nimisha Singri, MD

Nimisha Singri, MD
Dr. Nimisha completed her medical school training at the Autonomous University of Guadalajara and New York Medical College. She than went on to complete an internal medicine residency at Advocate Christ Medical Center in 2003. After practicing internal medicine for 4 years, she underwent training in cosmetic medical procedures including IPL/laser, chemical peels, microdermabrasion, Botox, and dermal fillers (Juvederm/Restylane).


Sarah Mahoney, MMS, PA-C

Sarah Hainzinger, MMS, PA-C
Sarah is a board certified and licensed Physician Assistant practicing Medical Dermatology. Sarah was born and raised in the south suburbs of Chicago and received her Bachelor of Science degree in Psychology (Summa Cum Laude) at Denison University in Ohio in 2005. She then went on to complete a Master of Medical Science degree (MMS) in Physician Assistant Studies at Midwestern University in Downers Grove, IL. After graduating in 2008, she worked as a Physician Assistant in primary care for 3 years, serving both pediatric and geriatric patients. In that family practice setting, she treated a wide variety of common dermatologic conditions. Sarah is excited to be a part of the team at Schaumburg Dermatology, and she works closely with Dr. Singri in providing Medical Dermatology care to children and adults. She has a special interest in treating acne, warts, rosacea, eczema, and psoriasis. Sarah is an active member of the Society of Dermatology Physician Assistants (SDPA) and the Illinois Society of Dermatology Physician Assistants (ISDPA).


Sonal V. Patel, MMS, PA-C

Sonal Vatel, MMS, PA-C

Sonal was was born in Chicago, raised in Schaumburg, Illinois and attended James B.Conant High School. She received her undergraduate degree with Honors from University of Illinois at Chicago in Medical Technology. She then went on to complete a Master of Medical Science degree (MMS) in Physician Assistant Studies at Cornell University Medical School’s Surgically Focused Physician Assistant Program in New York City. Sonal has been a Physician Assistant since 2002 and started her career in surgery doing cardiothoracic and vascular surgery for majority of her career and neurosurgery for over 10 years. She also worked at a mesotherapy clinic learning techniques in weight and cellulite reduction. Sonal has a very strong interest in surgical, medical and aesthetic dermatology.

She joined Schaumburg Dermatology in 2016,  but prior to this she has been a patient at the clinic for many years. She considers herself fortunate to have had an excellent doctor, mentor, and leader in Dr. Prashant Singri. She is also delighted to be able to serve in the community in which she grew up.

Sonal’s medical interests include acne, warts, eczema, psoriasis, skin cancer treatment and surgical procedures.

She also enjoys travel, fitness, yoga, meditation and spending time with her big Indian family especially her two daughters. Sonal is fluent in speaking Gujarati and speaks conversational Hindi and Spanish.


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