Thomas Russell, M.D.
Dr. Russell founded the dermatology practice in 1973; the practice became Affiliated Dermatologists,
S.C. in 1981. He has been recognized by Milwaukee Magazine's "Top Docs" in four consecutive surveys and
by Best Doctors in America. Dr. Russell is affiliated with Froedtert Memorial Lutheran Hospital, the VA
Hospital, St. Luke's Medical Center, Columbia St. Mary's and Elmbrook Memorial Hospitals. He is Board
Certified in Dermatology.
Dr. Russell is a Clinical Professor at the Medical College of Wisconsin (MCW) and has received
teaching awards from MCW and the Dermatology Foundation, a national educational organization. Among his
professional activities are numerous leadership positions with organizations including the Wisconsin
Dermatological Society, Milwaukee Academy of Medicine, American Academy of Dermatology and Noah Worcester
He served as the dermatologist and allergist at Barksdale Air Force Base, Shreveport, Louisiana, after
completing his residency in dermatology at the Mayo Clinic. He earned his medical degree from the
Marquette University School of Medicine and served his internship at Minneapolis General Hospital (now
Hennepin County General Hospital). His bachelor's degrees in chemistry and philosophy are also from
Dr. Russell has four adult children, including James P. Russell, M.D., who joined the practice in
2005. His personal interests include photography, traveling and family history.
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Glenn Sondag, M.D.
A co-founder of Affiliated Dermatologists, S.C., Dr. Sondag has been in practice since 1980. He is
affiliated with Froedtert Memorial Lutheran Hospital, the VA Hospital, Elmbrook Memorial Hospital and St.
Luke's Medical Center.
Dr. Sondag is Board Certified by the American Board of Internal Medicine and the American Board of
Dermatology. He is a member of numerous local, state and national professional organizations.
Dr. Sondag served his dermatology residency at the Medical College of Wisconsin and his residency in
internal medicine at the Mayo Graduate School of Medicine in Rochester, Minnesota. He earned his medical
degree from Northwestern University, Evanston, Illinois. His bachelor's degree is from the University of
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Kathleen S. Stokes, M.D.
Named three times as one of Milwaukee Magazine's "Top Docs" and every year since 1996 named in Who's
Who in American Medicine, Dr. Stokes is recognized as one of southeast Wisconsin's most outstanding
dermatologists. She has practiced with Affiliated Dermatologists, S.C. since 1991.
In addition to her practice, she is an Associate Clinical Professor of Dermatology at the Medical
College of Wisconsin. She has presented on a wide range of dermatological topics. Dr. Stokes
travelled to Shanghai China in 2006 and 2010, presenting on Dermatology and Systemic Disease as well as
Cosmetic Dermatology. Most recently, in 2013, she presented in Arizona for the 47th Annual Clinical
Conference for the Medical College of Wisconsin.
Dr. Stokes is affiliated with Froedert Hospital, Elmbrook Hospital, the VA Hospital and St Luke's
Medical Center. She is certified as a Diplomate of the American Board of Dermatology. She has held
leadership roles with the Wisconsin Dermatological Society, the Medical College of Wisconsin Alumni
Board, and the Dermatology Foundation. In addition, she is a member of the American Academy of
Dermatology, The American Medical Association, the Milwaukee Academy of Medicine, TEMPO, and the Alpha
Omega Alpha Honor Society in Medicine.
Dr. Stokes completed her dermatology residency at the Medical College of Wisconsin (MCW). She
served as chief resident in Dermatology in 1990-91. Her medical degree is from MCW and her Master's
degree and bachelor's (magna cum laude) degrees from the University of Utah. Her interests in
Dermatology include diagnosis and treatment of melanoma and skin cancer, and cosmetic dermatology.
Dr. Stokes is married and has three sons. She enjoys dance, travel and skiing.
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Gretchen Zirbel, M.D.
Dr. Zirbel joined Affiliated Dermatologists, S.C. in 1994. In addition to general dermatology, she
contributes her expertise in pediatrics to the practice. She is an Assistant Clinical Professor at the
Medical College of Wisconsin (MCW) and a Guest Lecturer at Marquette University. She is affiliated with
Froedtert Memorial Lutheran Hospital, the VA Hospital, Elmbrook Memorial Hospital and St. Luke's Medical
She is certified as a Diplomate of the American Board of Dermatology and a Diplomate of the National
Board of Medical Examiners. She is a member of local, state and national professional organizations. Her
research publications and presentations reflect her interest in pediatric dermatology. She has also
practiced in Kenya and Hondures in volunteer positions.
Dr. Zirbel became Chief Resident, Dermatology, at MCW in 1993, the third year of her residency. She
served her Medical/Pediatric internship at Grady Hospital of Emory University, where she received her
medical degree, magna cum laude. Prior to becoming a physician, Dr. Zirbel earned was a Physicians'
Assistant working in cardiothoracic surgery.
She is a cellist and performs with the concord chamber orchestra, as well as playing piano and
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Bradley Straka, M.D.
Recognized by Milwaukee Magazine's "Top Docs" as an "up and comer," Dr. Straka is building a
reputation for his astute diagnostic skills, with expertise in complex contact dermatitis. He is known
for his enthusiasm and ebullient personality. The partners of Affiliated Dermatologists, S.C. brought him
into the practice in 2002, immediately following his residency at the Medical College of Wisconsin (MCW).
Dr. Straka is Board Certified in Dermatology.
Dr. Straka is a member of several professional organizations and he is also the team dermatologist for
the Milwaukee Brewers.
He rose to Chief Resident, Dermatology, at MCW. He served his internship in Transitional Medicine at
St. Luke's Medical Center. His medical degree, with honors, is from the University of Illinois, where he
was first in his class and was inducted into the Alpha Omega Alpha Honor Society. His Bachelor of Science
degree in Biology is from the University of Illinois.
Dr. Straka is married and has two sons. An avid antique collector and painter, he and his wife are
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Kristina Kleven, M.D.
The practice welcomed Dr. Kleven in 2005. Board Certified in Dermatology, she is committed to the care
of patients of all ages with a variety of skin conditions. In addition, she brings special interest and
expertise in the special dermatologic needs of children and adolescents and surgical dermatology.
She is an Assistant Clinical Professor at the Medical College of Wisconsin (MCW), and she has
published a number of dermatology studies. Dr. Kleven is active in several local and state
Dr. Kleven was Chief Resident in Dermatology at MCW and completed her internship at St. Luke's Medical
Center. She attended MCW where she earned numerous accolades, including induction into the Alpha Omega
Alpha Honor Society and the AOA Service Project Award. Dr. Kleven served as director of the Isaac Coggs
Free Clinic in Milwaukee and received the Clinical Excellence Award.
She is married and enjoys spending time with her three young daughters. She also enjoys painting in
acrylics and oils.
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James Russell, M.D.
After serving as Chief Resident in the Mayo Clinic Department of Dermatology, Dr. Russell joined his
father at Affiliated Dermatologists, S.C. in 2005. Board Certified in Dermatology, he is committed to the
philosophy that the patient comes first, and he tries to embody that commitment with each individual
patient. He is an active endurance athlete, and although he enjoys treating patients with a wide variety
of skin conditions, Dr. Russell has a special interest in dermatological aspects of sports medicine and
While training at the Mayo Clinic, Dr. Russell received the O'Leary Award for Clinical Excellence and
the Roy S. Rogers Award for Excellence in Patient Care. He has published several dermatological studies
and is an Assistant Clinical Professor at the Medical College of Wisconsin.
Dr. Russell has a number of active hobbies including triathlons, road and mountain biking, cross
country and downhill skiing, running and traveling. Dr. Russell is married and has two children. He also
enjoys playing the guitar and singing in an acoustic band, Rimbender.
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Sun Young "Sunny" Ruggeri, M.D.
Dr. Ruggeri is a Board Certified in Dermatologist who treats a range of skin disorders from kids to
She focuses primarily on medical dermatology but also has significant training in pediatric
dermatology and cutaneous surgery.
Dr. Ruggeri graduated from medical school at Baylor College of Medicine in Houston, Texas, and
completed her residency in dermatology at the Medical College of Wisconsin in 2007 where she is an
Assistant Clinical Professor.
Dr. Ruggeri and her physician husband have two young children.
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Courtney Papp, PA-C
Courtney Papp received her Master's of Medical Science degree from the Physician Assistant program at
Midwestern University in Downers Grove, Illinois in 2003. Prior to beginning her education as a Physician
Assistant, she received an undergraduate degree in biology from the University of Dayton in Dayton,
She began her medical career working in internal medicine; however, she then chose to work in the
specialty of dermatology. Before joining Affiliated Dermatologists, S.C., Courtney worked for a
dermatology practice in La Grange, Illinois for four years.
She has also received recognition as a Diplomate from the Society of Dermatology Physician Assistants,
given after completing a specialty certification on dermatology.
Her areas of interest include acne, atopic dermatitis, psoriasis and skin cancer screenings.
Courtney is married and has one child
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