Our Providers

Elizabeth C. Lessner, MD, MPH


Dr. Lessner is a proud native Texan, and has called North Texas home for most of her life.  She graduated from Rhodes College in Memphis, Tennessee, and obtained a Masters of Public Health at Emory University in Atlanta.  Her medical school education was at Texas Tech University Health Sciences Center, and she completed her pediatric training at Children’s Mercy Hospital in Kansas City, Missouri. 

She is board certified in pediatrics, and has been caring for children in McKinney since 2010.  Providing every patient and family with empowering, personalized, evidenced based medical care is her passion.

Dr. Lessner lives in McKinney with her family.  She is an active member of her church and community, and enjoys music, being outdoors, and exploring new places and cultures.  When not caring for patients, you can find her cooking, gardening, or cheering for her children at one of their many activities.

Vijeta Salunkhe, MD, MHA, MBA


Dr. Salunkhe completed her pediatric residency from Baylor Scott and White, Temple, Texas in 2021 and graduated from Grant Medical College. She is passionate about promoting health and wellness of children in our community.

Dr. Salunkhe is married and has a loving son and a daughter. In her free time, she enjoys spending time with family, playing ping pong, travelling, and volunteering at community events.

Gita Viswam, MD, MPH


Dr. Viswam’s parents immigrated from India in the 1970s. She was humbly raised to appreciate hard work, selfless service, and family. These values are what drove her to pursue a career in Pediatrics. After graduating from Robert Wood Johnson Medical School in New Jersey, she completed her residency in Philadelphia at St. Christopher’s Hospital for Children.

Dr. Viswam began her career at Plano Children’s Medical Clinic, and soon after was the primary pediatrician at the Wylie location of PCMC. Since then she has worked at Children’s Health Pediatric Group in McKinney and most recently Prosper Pediatrics. She feels fortunate to have spent the majority of her work life doing what gives her the most happiness – caring for vulnerable children. Dr. Viswam is so excited to be a part of the Pediatric Clinic at the Family Health Center on Virginia, a safe and joyful place where every family’s story is worthy of being heard.

Dr. Viswam is married and has two boys. Her own personal experiences with illness has taught her to appreciate the importance of treating the body as a whole being. She loves all things holistic and enjoys focusing her clinical practice on integrative wellness and the mind – body connection.

Brock Pierce, M.D.

OB/GYN Physician

Brock Pierce, M.D. graduated with his Bachelor of Art from Southwestern University in Georgetown, Texas where he graduated Cum Laude. He earned his Medical Doctorate from the University of Texas Medical School in San Antonio, Texas, and is now pursuing a Masters of Counseling from Southern Methodist University in Plano, Texas.  Dr. Pierce has over 15 years of experience as an OB/GYN Physician. He has experience in evaluating, managing and delivering infants of high-risk obstetric patients. He has earned awards including Physician Electronic Health Record Champion and Outstanding Resident and Teaching Award.

Larry Pierce, M.D.

OB/GYN Physician

Bruce Rajala, D.O.

OB/GYN Physician

Bruce Rajala, D.O., an OB/GYN Physician at Women’s Health Center of McKinney, followed his father’s dream of being a Physician. After graduating with honors from Lake Forest College he continued his medical studies at the Prestigious Chicago College of Osteopathic Medicine. Upon graduation he was named Outstanding Graduate in the fields of Obstetrics and Gynecology.

 Dr. Rajala entered the U.S. Army immediately to begin a four-year internship and residency in his chosen fields of Obstetrics and Gynecology. His assignment to Brooke Army Medical Center at Fort Sam Houston led him to Texas.

 During his career Dr. Rajala has written, published and presented information in professional journals and meetings.

 Dr. Rajala is a Board-Certified Physician by the American Board of Obstetrics and Gynecology. He is also a Fellow of the American College of Obstetrics and Gynecologist.

Megan Thibodeaux, M.D.

OB/GYN Physician

Alisha McCullough, D.N.P., C.N.M., A.P.R.N.

Nurse Midwife

Ning Huang, F.N.P.-C.

Board Certified Family Nurse Practitioner

Ning Huang, BSN, MSN, FNP, is a Board-Certified Family Nurse Practitioner through the American Association of Nurse Practitioners. She completed her Bachelor of Science in Nursing in China and received her Master of Science in Nursing from the University of Texas Health Science Center at San Antonio. She provides comprehensive medical care to patients of all ages and treats a broad range of health conditions, from wellness and prevention to sick visit and chronic disease management. She is also a preceptor providing clinical training for students. She is excited to continue working with health centers and providing patient-centered healthcare services to the McKinney community. In her spare time, she loves spending time with her family. They enjoy traveling, being outdoors, and hiking.

Akosua Norgbey, F.N.P.-C.

Board Certified Family Nurse Practitioner

Akosua Norgbey, FNP-C, a family nurse practitioner, received her Bachelor of Science in Nursing with honors from the University of Akron in Ohio.  She went on to complete her Master of Science in Nursing from the University of Cincinnati. She is a member of Sigma Theta Tau International Honors Society of Nursing. As a board-certified Family Nurse Practitioner, Akosua Norgbey is experienced in caring for all ages across the lifespan from newborn to the elderly. Akosua provides patient-centered healthcare services, including well child pediatric and adult visits, sick visits, management of chronic illnesses and women’s health. In her leisure time, Akosua Norgbey loves to cook and enjoys traveling with her family.

Lacy Patterson, D.M.D.

Family Dentist

Dr. Patterson grew up in Waco, Texas. She received her undergraduate degree in Biomedical Science at Texas A&M University. She then went on to complete her dental degree at Arizona School of Dentistry and Oral Health. After completing dental school, she returned to Texas to complete a residency in advanced education in general dentistry at Baylor College of Dentistry. She is a member of the American Dental Association (ADA), Texas Dental Association (TDA), and North Texas Dental Society. Dr. Patterson is certified for child-friendly First Dental Home.

Dr. Patterson is a proud mom to Lucky Boone, her golden retriever, and a proud aunt to Duckie and Henry, her fur niece and nephew. She enjoys morning coffee, running, baking, fishing, being outdoors, and spending time with her loved ones. She is actively involved with the Golden Retriever Rescue of North Texas.

Dr. Patterson is excited to continue her work with community health centers and to improve the oral health of the McKinney community.

Kristi Karrington, D.M.D.

Family Dentist

Dr. Karrington received her bachelor’s degree from Texas A&M University and went on to complete her dental degree at Arizona School of Dentistry & Oral Health. She returned home to Texas where she completed an advanced education in General Dentistry residency at Baylor College of Dentistry. She is a member of the American Dental Association (ADA), Texas Dental Association (TDA), and North Texas Dental Society. Dr. Karrington is certified for child-friendly First Dental Home.

Dr. Karrington is actively involved with the Golden Retriever Rescue of North Texas. She and her husband have two tots together – Henry a twelve year old Bichon and Duckie a Boykin Spaniel bird dog. She enjoys traveling, running, fishing, and being outdoors with her husband.

Susann Eirosius, L.C.S.W.

Behavioral Health Counselor

Susann Eirosius received her bachelor’s degree from the University of Mary Hardin-Baylor, and went on to complete her master’s degree at Texas State University. She continued her learning experience as chief social worker, obtaining her clinical license at North Texas State Hospital where she helped facilitate mental health services for children & adolescents. She has also provided services for adults with mental illness at Red River Hospital for Behavioral Health and Drug Addiction Rehab. Susann has also provided instruction for Midwestern State University Social Work students as an adjunct instructor of Human Diversity. Susann’s mission is to enhance human well-being and help meet the basic human needs of all people, in particular with the underserved.