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Meet our Team

The Doctors, Nurses and Office Representatives

The Doctor & Providers

Choosen for their knowledge, experience and dedication.

Dr. Pienkowski, M.D., P.h.D.

Founded his medical practice in East Tennessee in 1984. In the prior decade, Dr. Pienkowski honed his research and clinical interests in distinguished institutions such as The Wistar Institute at the University of Pennsylvania, Henry Ford Hospital, and the Johns Hopkins University School of Medicine. When Dr. Pienkowski became ready to set out on his own, he was motivated to practice medicine where people needed him and his colleauges the most.

Curriculum Vitae

Personal Publications


 Wiki Page

Sarah Belcher, FNP-Allergy

Sarah has worked alongside Dr. Pienkowski for seven years and has extensive experience in the field of Allergy, Asthma & Immunology. You will find Sarah working at our Clinics in the Tri-Cities.

Jonathan Pleasant, Physician Assistant

Jonathan is experienced in multiple medical disciplines including Allergy, Asthma & Immunology, Dermatology, and Emergency Medicine. He and his family moved to East Tennessee from Texas in 2010 after falling in love with the area on family vacations.

Medical & Administrative Staff.



Sarah Pierce, LPN

Joye Bussen, LPN
Dawn Whaley, CPhT

Administrative :

Brianne Harmon, Officer Manager
Kristie Cook, Office Representative
Blake Huggins, Practice Administrator



April McKee, Office Representative

Christan Turner, LPN
Mary Ann Walsh, LPN

Administrative :

April McKee, Office Representative



Heather Horton, LPN

Administrative :

Christie Magnus, Office Representative

Johnson City


Sabrina Ellis, LPN
Amy Morton, LPN

Administrative :

Debbie Clabough, Office Representative



Heather Mullikin, LPN

Administrative :

Barbara Stephenson, Office Representative