Atul K. Singhal, MD
Medical Director
Dr. Singhal is Board-Certified in Rheumatology and has over 30 years of clinical experience. He earned his medical degree from the All India Institute of Medical Sciences in New Delhi. He then completed a residency in Internal Medicine at State University of New York at Stony Brook and fellowship training in Rheumatology and Geriatric Medicine at the University of Pennsylvania. Dr. Singhal has served as an Attending Physician at various hospitals on the East Coast and in Texas, and he founded his practice in Mesquite in 1997. He has a keen interest in clinical research, and he has overseen and participated in over 150 clinical research trials.
Dr. Singhal is married with four children and has lived in Dallas since 1995.
Carmen Campbell, MD
Physician
Dr. Campbell is Board-Certified in Internal Medicine and Rheumatology. She earned her medical degree from the University of Arizona in Tucson. She then completed her Internal Medicine residency followed by a year as Chief Resident at the University of Wisconsin in Madison. She subsequently completed her Rheumatology fellowship at the University of Wisconsin in Madison. Following fellowship, she moved to Dallas with her family and shortly thereafter joined Southwest Rheumatology in November 2015. Her areas of special interest include Systemic Lupus Erythematous (SLE) and Antiphospholipid Syndrome. In her free time, she enjoys spending time with her husband, two young sons, and dogs.
Mei-An Ty-Arias, MD
Physician
Dr. Ty-Arias is a Board-Certified physician in Internal Medicine and Rheumatology. She earned her medical degree from the University of Santo Tomas Faculty of Medicine and Surgery in the Philippines. She then completed Internal Medicine residency at Harlem Hospital Center in affiliation with Columbia University in New York. She subsequently completed her Rheumatology fellowship at Drexel University College of Medicine in Philadelphia, PA. Following two years of rheumatology practice in Beaumont, TX, Dr. Ty-Arias relocated to Dallas in 2019 to join Southwest Rheumatology. Her areas of special interest include spondylitis, rheumatoid arthritis, and osteoporosis. She is married with a son, and in her free time she enjoys gardening and cooking.
Pedro Castillo, MD
Physician
Dr. Castillo is Board-Certified in Internal Medicine and Rheumatology. He earned his medical degree at the University of Texas Southwestern, where he was an Alumni Scholarship recipient. He completed his Internal Medicine training and Rheumatology fellowship at University of Texas Southwestern. While completing his fellowship training, Dr. Castillo worked as a nocturnist at Clements, Zale Lipshy, Dallas VA, and Vibra hospitals. His special interests in rheumatology include scleroderma and rheumatoid arthritis. He is married and has two children. In his free time, he enjoys spending time with family, reading, board games, and watching football.
Meshell Austin
Office Manager
Meshell has worked at Southwest Rheumatology since 2007. Along with her management duties, she also coordinates clinical trial contracts and budgets, assists with infusion patients, and helps patients enroll in copay assistance programs. Meshell has two children and one granddaughter.
Nancy De La Cruz, CCRC
Certified Clinical Research Coordinator
Nancy began her medical career in 2004 as a medical assistant, and she has been involved with clinical research since 2007. Throughout her career as a clinical research coordinator, she has earned certifications from the Association of Clinical Research Professionals (2013) and National Health Career Association (2014). Nancy has extensive experience in rheumatology, internal medicine, asthma/allergy, immunology, and oncology.
Guadalupe Cindo, NRCMA
Clinical Research Coordinator
Lupe has worked at Southwest Rheumatology since 2015. She began her medical career in 2004 as a Certified Medical Assistant, and she has been involved with clinical research since 2011. She has extensive experience with Phase I-IV clinical trials. Her therapeutic expertise includes rheumatology, cardiovascular comorbidities, endocrinology, mental health disorders, GI disorders, pulmonology, chronic pain, sleep disorders and autoimmune disorders. In her free time, she enjoys camping outdoors, hiking, and spending time with her family.
Nancy Rosales, CRC
Clinical Research Coordinator
Nancy has 16 years of clinical research experience, and she joined Southwest Rheumatology as a clinical research coordinator in February 2019. She is a member of The Society of Clinical Research Associates. She has expertise in the following therapeutic areas: rheumatology, gastroenterology, hepatology, cardiovascular, endocrinology, oncology and allergy. She has experience with Phase I - IV studies. On her time off she enjoys spending time with her husband, 2 sons and 2 grandchildren.
Joan Mendoza
Pharmacy Coordinator
Joan has worked at Southwest Rheumatology since September 2015, with roles in both pharmacy and regulatory. She became certified as a National Licensed Pharmacy Technician in 2004 and had nearly a decade of pharmacy experience when she joined our team. Joan is a wife and mother of five beautiful children, and she loves to spend time with her family.
Amy Vongphakdy
Pharmacy Coordinator
Amy has been with Southwest Rheumatology since August 2019. She became a licensed pharmacy technician in 2016, with previous experience in both retail and specialty pharmacies. Amy loves to spend time with family, travel, and watch football.
Ryan Murphy, ACRP-CP
Regulatory Coordinator
Ryan joined the Southwest Rheumatology team in October 2018, and he is returning to the medical field after several years of working in operations for corporate meetings and events. He is a 2012 graduate of UCLA’s School of Medicine, and he is now transitioning to an administrative role in clinical research. In his spare time, he enjoys digital photography, classic cars, going to concerts and spending time with his family and pets.
Marta Lopez
Research Assistant
Marta has worked in the medical field for 18 years as both an x-ray tech and a medical assistant. She had 8 years of rheumatology experience when she joined Southwest Rheumatology in October 2017. Marta enjoys being busy, and she works tirelessly to support the clinical research team.
Teresa Hernandez
Lab Coordinator
Teresa has worked in the medical field for nearly 18 years, and she joined Southwest Rheumatology in March 2019. She has extensive experience in laboratory procedures and phlebotomy, and she has worked in a dental lab and orthopedics practice in the past. In her spare time, Teresa loves spending time with her family and friends and she is a huge Cowboys fan.
Jodi Williams
Patient Recruitment Specialist
Jodi is an experienced patient recruiter with a long career in the medical field and a strong commitment to helping patients. She is a wife of over 28 years, a mom to 3 wonderful adult children, and she is very proud of her 3 dogs, 1 cat, and 5 grand-dogs. Jodi is very active in her church, where she runs the video ministry for media streaming outreach. In her spare time, she enjoys family time, game nights, and cookouts.
Steve Macofsky, LMRT
X-Ray Technician
Steve has worked at Southwest Rheumatology since 2009. He has had a long career in the medical field since graduating from x-ray school in 1979. In addition to his x-ray duties, Steve serves as the joint assessor for most of our research studies. Steve is a people person who loves to discover humor and joy in all aspects of life. His hobbies include travel and marine reef aquarium keeping.