Meet Our Nurse Practitioners & Physician Assistants

Tonia K. Ackerman, MSN, ARNP

Tonia K. Ackerman, M.S.N., A.R.N.P.
Tonia is a state licensed Advanced Registered Nurse Practitioner. She is board certified in Family Practice by the American Nurses Credentialing Center. Tonia graduated in 2002 with a Masters of Science degree in Nursing-Family Nurse Practitioner from Clarkson College in Omaha, NE. She also earned her Bachelor of Science in Nursing from Grand View College in 1999, and an Associate degree in Nursing(RN) in 1990 from Marshalltown Community College. She has over 18 years of experience in several areas of nursing. Tonia is a member of the Iowa Nurse Practitioner Society, American Nurses Association, and the Society of Dermatology Physician Assistants.

   
Sonja Baer

Sonja Baer, P.A.-C.
Sonja is a state licensed Physician Assistant accredited by the NCCPA. She has a Masters degree in Physician Assistant studies from Des Moines University. Sonja also has a Masters degree from Drake University in higher education and a Bachelors degree from Iowa State University in Physical education with a minor in Exercise science. As a Physician Assistant Sonja has worked in Orthopedics and also has 15 years experience as a certified athletic trainer and certified strength and conditioning specialist. She is currently a member of the Society of Dermatology Physician Assistants.

   
Lindsey Engbers
Lindsey Engbers, P.A.-C.
Lindsey is a state licensed Physician Assistant accredited by the National Commission on Certification of Physician Assistants (NCCPA).  She earned a Masters of Science in Physician Assistant Studies from Des Moines University after receiving her Bachelor degree from the University of Northern Iowa.  Lindsey earned Dean’s list and Cum Laude honors in college and is a member of multiple Physician Assistant societies.  The physicians and staff welcomed Lindsey to Dermatology, P.C. in July 2013.
   
Emily Erickson
Emily Erickson, P.A.-C.
Emily is a state licensed Physician Assistant accredited by the National Commission on Certification of Physician Assistants (NCCPA). She earned a Masters of Physician Assistant Studies from the University of Iowa after receiving her Bachelor of Arts degree from the University of Northern Iowa. Emily is a member of multiple professional organizations and has also worked as a mentor for pre-Physician Assistant students. Prior to joining Dermatology, P.C. she worked in Urgent Care and Emergency Room settings. Emily joined Dermatology, P.C. in August 2013.
   
Amy. S. Aschweiler

Amy S. Eschweiler, P.A.-C.
Amy is a state licensed Physician Assistant accredited by the NCCPA. Amy graduated Summa Cum Laude with a degree in Biology from the University of Northern Iowa and also received a Bachelor of Science degree-Physician Assistant from the University of Osteopathic Medicine and Health Sciences. Amy has worked in the Dermatology profession since 1999 and is a member of the following professional organizations: American Academy of Physician Assistants, the Society of Dermatology Physician Assistants, and the Iowa Physician Assistants.

   
Megan Ferguson, A.R.N.P.

Megan Ferguson, A.R.N.P., D.C.N.P.
Megan is a state licensed Advanced Registered Nurse Practitioner. She is board certified in Family Practice by the American Academy of Nurse Practitioners (AANP). Megan graduated with highest distinction and honors with her Bachelor of Science degree from the University of Iowa in 2005. She then continued at the University of Iowa to receive her Masters degree as a Family Nurse Practitioner in 2009. She recently obtained her certification as a Dermatology Nurse Practitioner (DCNP) from the Dermatology Nurses Association. She is a member of the American Academy of Nurse Practitioners, Dermatology Nurses Association, and the Society of Dermatology Physician Assistants.

   
Jennifer A. Vandivier

Jennifer A. Vandivier, P.A.-C.
Jennifer is a state licensed Physician Assistant accredited by the NCCPA. She graduated in 2002 from Des Moines University with a Bachelor of Science in Physician Assistant studies after achieving her Bachelor of Science-Nursing from Mount Mercy College. Jennifer has been practicing dermatology in our clinic since that time. Along with her impressive volunteer work, she is an active member of the following professional societies: The Iowa Physician Assistant Society, The American Academy of Physician Assistants, and the Society for Dermatology PA’s.