Meet Our Team


Dr. Luis Melgar

Internal Medicine
Allergist & Immunologist

Luis Melgar, MD was born in El Paso, TX. He graduated from Texas Tech University in 1983 with a degree in Bachelor of Science.  He graduated Medical School from Universidad Autonoma De Guadalajara in 1988 and he completed his Internal Medicine Residency at Mt. Vernon Hospital, NY in 1992. Dr. Melgar completed his Fellowship in Asthma, Allergy and Immunology at the State University of New York at Buffalo in 1995.

Dr. Melgar started in private practice with Medical Associates Southtowns, a multi-specialty group from 1995-1998. He founded Southtowns Asthma & Allergy Center in 1998. Over the past numerous years, Dr Melgar has become the premier Asthma, Allergy & Immunology specialist in the Southtowns.  In 2006 he was elected President of Buffalo Asthma and Allergy Society.  He served two terms, during his presidency he was able to make significant educational strides on the behalf of local allergists.

Dr. Melgar started flying airplanes at age 13 and soloed at 14 years old. He received a private pilot license at 17 years old. Now he is a Radio Control Model Airplane Enthusiast.

While traveling or not at work, Dr. Melgar enjoys the company of his beautiful wife and best friend Melissa. Dr. Melgar has two very lovely daughters Niyla and Elaina. He is very proud of them both and loves them very much. 

Our Staff

Your Medical Professionals


Madonna M. Reddington, FNP

Family Nurse Practitioner

Madonna has been practicing as a nurse practitioner for almost 10 years now. She has a background in nursing for 25 years with experience in surgical/trauma, school nurse, nurse recruiter, and professor of nursing at the baccalaureate level. 

Interests in medicine: allergy & immunology, asthma/COPD, cardiology, endocrinology, and orthopedics. 

"I believe in delivering quality patient care and truly value the patient's perspective in addressing the holistic needs of the patient with an individualized approach to patient care." 

Our AWESOME office staff

Cheryl has been in the medical field for 24 years. She has 2 sons who are her world. She enjoys going on her boat and fishing for walleye. She also works as a court clerk for the town of Persia. In her spare time Cheryl enjoys spending time with her family and friends!


Marge Roberts

Front Office Staff Manager/Biller

Marge has worked in the medical field for 30 years. She is a certified medical coder and biller. Outside work she enjoys her two multi poos and Buffalo sports.

Our AMAZING nursing staff

Beverly Ring, LPN

Beverly graduated from the LPN Program at Cattaraugus-Allegany BOCES in Olean NY in 2007, and she started working at the practice in April 2017. Beverly has experience in geriatric and rehab care as a charge nurse. She and her husband enjoy spending time with family and friends as well at watching the Buffalo Bills.


Bonita Heltz, LPN

Bonita is our "office tomboy!"  A 1991 graduate of Erie One Boces. 

She enjoys spending her free time with her loving husband, in the  outdoors, boating & fishing and cheering on the New York Yankees!


Gianna is a 2014 graduate of Lackawanna High School.  She has been working in the medical field for over six years. She enjoys spending her free time with 2 daughters Janiyah and Jaylani, her family, and being a role model for her two little sisters.


Gianna Giangrosso

Cheryl Matern