Service to the community has long been a priority for Ken Nikaidoh. He served as an emergency medical technician before turning his focus to inpatient care in 2014. In addition to being a dedicated clinician in the Dallas area, Ken has made it a point to help underserved populations across the globe. His fluency in the Spanish language enabled him to serve as a translator between physicians and patients during his volunteer work in Honduras. He also delivered and fitted wheelchairs for communities in Havana, Cuba. Ken completed his post-baccalaureate pre-medicine coursework at The University of Texas at Arlington. He later earned his Master of Physician Assistant Studies at the UT Southwestern School of Health Professions in Dallas. His experience includes trauma care, surgical assistance for minimally invasive abdominal, oncological and gynecological procedures, pediatrics and wound care. Ken is certified as a physician assistant.

Edward Martinez began his medical career with Baylor University Medical Center in 1998. He provided surgical assistance for a variety of routine and complex surgical procedures across disciplines while at Baylor. Edward's experience also encompasses comprehensive family medicine care.He graduated from the University of Texas at Arlington with a bachelor's degree in biology. He also received a master's degree in physician assistant studies from the University of New England in Portland, Maine.

Elizabeth Diaz is a certified physician assistant. With more than 14 years of experience in the medical field, she brings expertise and experience to the patients of the Texas Center for Joint Replacement.Prior to joining the Texas Center for Joint Replacement, Diaz served as the director of physician assistants at North Shore University Hospital in Manhasset, N.Y., and supervising P.A. at St. Vincent's Hospital in NYC and North Shore University Hospital. She has extensive experience in providing pre- and post-operative care, as well as first assisting in various surgical cases. She also has many years of health care management experience.Diaz received her bachelor's degree of science in physician assistant studies from St. John's University in Queens, N.Y., and a master's degree in Public Administration from the Robert F. Wagner School of Public Service at New York University in New York City.She is a member of the American Academy of Physician Assistants and the Texas Academy for Physician Assistants. She is certified in Basic Life Support and Advanced Cardiac Life Support, and received her surgery certification from the National Commission of Certification of Physician Assistant.

Having a grandfather who was sick and bed-bound in his final days spurred Amy Tran’s interest in medicine. She went on to become certified as a physician assistant in 2006 so she could have an impact on the lives of others. Her extensive clinical experience has allowed her to work with patients of all ages and care for everything from primary care concerns and women’s health issues to minor injuries and chronic conditions such as ADHD, asthma, diabetes and hypertension.Amy earned her undergraduate degree in biology from The University of Texas at Austin. She received her Master of Physician Assistant Studies from The UT Medical Branch at Galveston. The positive impact that many of Amy’s patients make on her continually reaffirms her passion for medicine. She is a Fellow of the American Academy of Physician Assistants and a member of the Texas Academy of Physician Assistants. Amy speaks fluent Vietnamese. Her top area of expertise is Vitamin D Deficiency.

Erin Tenney is a certified physician assistant who graduated summa cum laude from Rice University in Houston with a degree in psychology. She also achieved excellence on the playing field while at Rice, gaining recognition as an Academic All-American women's soccer scholar athlete. She went on to graduate with honors as well from The University of Texas Southwestern Medical Center in Dallas with a Master of Physician Assistant Studies and earned the highest honor awarded by the UT Southwestern School of Health Professions, the Schermerhorn Scholarship Award.Erin's medical experience includes hospitalist care, internal medicine and clinical rotations in such areas as surgery, infectious disease and emergency medicine. She is a member of the Pi Alpha National Honor Society for Physician Assistants, American Academy of Physician Assistants and Texas Academy of Physician Assistants. Her top areas of expertise are Paroxysmal Supraventricular Tachycardia (PSVT), Atrioventricular Nodal Reentrant Tachycardia (AVNRT), Atrial Tachycardia, and Heart Failure with Preserved Ejection Fraction (HFpEF).

Sarah Loudermilk is a Physician Assistant in Dallas, Texas. Her top area of expertise is Protein Deficiency.

Karla Medrano has a passion for caring for a culturally diverse patient population and advocating through education, as is evident in her previous medical mission work in Latin America and her service to Spanish-speaking patients through the Good Shepherd Family Ministries of Oklahoma City. She places a priority on striving to make a positive difference in her patients’ lives every day. Karla has worked with heart patients since early 2021, supporting both clinical and interventional cardiologists as a certified physician assistant. Her areas of focus include coronary artery disease, cardiomyopathy, arrhythmias, peripheral artery disease, venous disease and valvular heart disease. Karla earned her bachelor’s degree in biology at the University of Oklahoma in Norman. She received her master’s degree in physician assistant studies from Methodist University in Fayetteville, N.C. Outside of work, Karla enjoys spending time with loved ones, hiking, traveling and cooking. Her top areas of expertise are Heart Failure with Preserved Ejection Fraction (HFpEF), Atrial Tachycardia, Atrioventricular Nodal Reentrant Tachycardia (AVNRT), and Paroxysmal Supraventricular Tachycardia (PSVT).

Kevin Mainz is licensed by the State of Texas as a certified physician assistant. He received his master's degree in physician assistant studies from the University of Texas Southwestern Medical Center in Dallas. Mainz received his undergraduate degree in exercise science from Texas Tech University, and then completed a master's in exercise physiology from the University of North Texas. He worked as an exercise physiologist at Texas Health Presbyterian Hospital Dallas, and served as cardiac rehab director for nine years, prior to attending P.A. school. Mainz also worked as a P.A. in general internal medicine prior to joining Presbyterian Heart & Vascular Group. He and his wife Kelli have three children. . His top areas of expertise are Heart Failure with Preserved Ejection Fraction (HFpEF), Atrial Tachycardia, Atrioventricular Nodal Reentrant Tachycardia (AVNRT), and Paroxysmal Supraventricular Tachycardia (PSVT).

Jordan Hughey has made a career of serving the health care needs of others. His service to the community first began in 2008, when he served as a medical mission volunteer in Peru. He then found himself volunteering in Ghana in 2012. More recently, Jordan has worked as a physician assistant in local homeless shelter clinics.Jordan graduated Summa Cum Laude with a bachelor's degree in biology from Union University in Jackson, Tenn. He earned his Master of Physician Assistant Studies from The University of Texas Southwestern Medical Center in Dallas. Jordan is a member of the American Academy of Physician Assistants and Texas Academy of Physician Assistants. His top area of expertise is Traumatic Brain Injury.

Scott Lee began his medical career working as an exercise physiologist in the area of cardiac rehab before becoming certified as a physician assistant in 2002. He went on to care for heart failure, stroke and critically ill patients and those with cardiovascular and cardiothoracic surgical care needs. He is experienced in general cardiology, electrophysiology and interventional cardiology, and has assisted in a variety of procedures to promote improved heart and vascular health. Scott graduated from Eastern Michigan University in Ypsilanti, Mich. with his bachelor’s degree in exercise science. He earned his master’s degree in physician assistant studies at Wayne State University in Detroit, Mich. Scott is a member of the American Academy of Physician Assistants and Texas Academy of Physician Assistants.

Peter Kunkel received his bachelor's degree from Kansas State University in 1988 and his master's degree in clinical physiology from Indiana University in 1991. In 2001, he completed his degree in physician assistant studies from the University of Texas Southwestern Medical Center and specializes in cardiology.Kunkel is active in teaching at the medical school as well as the Texas Health residency program, where he was named the </em>Teacher of the Year</em></em> in 2011. He and his wife Lisa have three children. In his spare time, he enjoys skiing, fly fishing and camping.

Kathleen Underwood has prioritized timely assessments, stabilization and inpatient management as a trauma surgery physician assistant since 2024. She has additional experience in acute care surgery as a certified physician assistant with special interests in the areas of traumatic brain injury care and ultrasound use in emergency medicine. Kathleen earned her bachelor’s degree in biology while attending The University of Texas at Dallas. She graduated with her master’s degree in physician assistant studies from the UT Health Science Center at San Antonio. Kathleen is a member of the American Academy of Physician Associates and Texas Academy of Physician Assistants.

Sara Ross is clinically trained in a variety of areas, including general and acute surgery, emergency medicine, cardiovascular ICU and internal medicine. She became certified as a physician assistant in 2022.Sara earned her bachelor’s degree in allied health Summa Cum Laude while attending Texas A&M University in College Station. She went on to earn her Master of Physician Assistant Studies from The University of Texas Southwestern Medical Center in Dallas. She is a member of the Texas Academy of Physician Assistants.

Jordan Stellato is a Physician Assistant in Dallas, Texas.

Certified physician assistant Lindsey Birch is clinically trained to provide surgical assistance for a variety of laparoscopic, robotic and open procedures. She is experienced in the areas of general, reconstructive plastic and gynecological surgery as well as comprehensive wound care. She places a priority on providing quality inpatient and outpatient surgical care to patients with burns, trauma injuries, tissue grafts, reconstruction, fractures and more. She is especially passionate about helping patients navigate their injuries and surgical experiences from beginning to end. Lindsey graduated from the University of California at Santa Barbara with her bachelor’s degree in biological sciences. She earned her Master of Physician Assistant Studies at The University of Texas Southwestern Medical Center in Dallas.

Nguyet Vo is a certified physician assistant who has always had a strong passion for helping others, which led her into the field of medicine. She has been a physician assistant since 2008, and finds the joy of helping others heal to be one of the most rewarding parts of her career.Vo earned a bachelor's degree in physician assistant studies from the University of Finlay in Ohio, and a master's degree in physician assistant studies from the University of Nebraska.Born in Vietnam, she moved to the United States when she was seven years old. While she has lived in Texas the majority of her life, she speaks Vietnamese fluently, which she has found to be a great asset with her job. During her spare time, Vo enjoys spending time with her family, decorating her house and staying active with bike riding and playing tennis.

Sonya Joseph has been focused on helping patients maintain their good health and manage their acute and chronic conditions since becoming certified as a physician assistant in 2020. She is experienced in the areas of primary care/internal medicine, urgent care and sleep medicine. Previously, she worked with adult patients in a busy internal medicine practice in the Dallas area, where she delivered evidence-based treatment plans tailored to each patient. Sonya holds a bachelor’s degree in biology from The University of Texas at Dallas. She completed her Master of Physician Assistant Studies while attending the University of North Texas Health Science Center in Fort Worth.

Keziah Babu became certified as a physician assistant in 2023. She has cared for patients at all stages of life and with diverse health needs. Keziah’s areas of special focus include acute and urgent care, heart and pulmonary health, and women’s services, for adolescents to moms-to-be and seniors. She made her way to North Texas from Georgia, where she previously served the urgent care needs of the Greater Atlanta community.Keziah graduated Magna Cum Laude with her bachelor’s degree in health science from City University of New York - York College in Jamaica, N.Y. She earned her Master of Physician Assistant also at CUNY in Jamaica. Keziah is a member of the American Academy of Physician Assistants.

Allison Whittlesey is a Physician Assistant and an Orthopedics provider in Dallas, Texas. Ms. Whittlesey is highly rated in 2 conditions, according to our data. Her top areas of expertise are Adolescent Idiopathic Scoliosis, Scoliosis, Spondylolisthesis, and Spinal Stenosis. Ms. Whittlesey is currently accepting new patients.

Jahvel Thompson is a Physician Assistant in Dallas, Texas. Mr. Thompson is highly rated in 1 condition, according to our data. His top areas of expertise are Byssinosis, Vitamin D Deficiency, Non-Alcoholic Fatty Liver Disease, and Eyelid Bump.

Doris Valle-Rayo is a Physician Assistant in Dallas, Texas. Ms. Valle-Rayo is highly rated in 1 condition, according to our data. Her top areas of expertise are Sunken Fontanelles, Herpangina, Scarlet Fever, and Congenital Athymia. Ms. Valle-Rayo is currently accepting new patients.

Zena Patel is a Physician Assistant in Richardson, Texas. Ms. Patel is highly rated in 1 condition, according to our data. Her top areas of expertise are Seasonal Affective Disorder (SAD) and Schizoaffective Disorder. Ms. Patel is currently accepting new patients.

Eric Graham is a Physician Assistant in Dallas, Texas. Mr. Graham is highly rated in 1 condition, according to our data. His top area of expertise is Seasonal Affective Disorder (SAD). Mr. Graham is currently accepting new patients.

Allan Avellanet is a Physician Assistant in Dallas, Texas. Mr. Avellanet is highly rated in 1 condition, according to our data. His top areas of expertise are Fractured Spine and Cervical Myelopathy. Mr. Avellanet is currently accepting new patients.

Stefani Alexander is a Physician Assistant in Dallas, Texas. Ms. Alexander is highly rated in 1 condition, according to our data. Her top areas of expertise are Seasonal Affective Disorder (SAD), Pseudobulbar Affect, and Oppositional Defiant Disorder (ODD).