Robert S. Marks, M.D.

robert_marksDr. Marks graduated with high honors from The University of Texas at Austin. Subsequently, he completed his medical school training at The University of Texas Medical Branch at Galveston, followed by two years of General Surgery residency and a three year residency in Anesthesiology at Texas Tech University Health Sciences Center. Dr. Marks culminated his formal medical training with a one-year Pain Management fellowship at the prestigious International Pain Center at Texas Tech University Health Sciences Center, one of the top Pain Management fellowships in the country where Dr. Marks was trained by the internationally renowned Dr. Gabor Racz and Dr. Miles Day. Dr. Marks is currently board certified by the American Board of Anesthesiology in Pain Medicine and Anesthesiology.

Prior to practicing in Austin, Dr. Marks was an Assistant Professor at Texas Tech University Health Sciences Center who enjoyed teaching residents & medical students the fundamentals of Anesthesiology and Pain Management. Dr. Marks has presented at national and international meetings including the Texas Pain Society, International Anesthesia Research Society, American Society of Anesthesiologists, and the Gulf Atlantic Anesthesia Residency Research Conference. He continues to give guest lectures at outside institutions. Dr. Marks was twice the recipient of the University Medical Center Safe Surgeon Award.

As proud native Texans, Longhorns, & childhood sweethearts, Dr. Marks and his wife, Amanda, have followed their long-time dream of moving back to Austin. When not treating patients, he enjoys playing with his three children, running, chess, reading books about quantum physics, and playing the piano.

Sauman A. Rafii, M.D.

Dr. Rafii is board certified by the American Board of Anesthesiology in both Anesthesiology and Pain Medicine.  He completed a combined 6 year B.S/M.D program through Kent State University and the Northeast Ohio Medical University.  He then went on to complete his residency in anesthesiology at New York University, which has been consistently ranked by US News and World Report as one of the top hospitals in the nation.  Furthermore, his Pain Medicine fellowship was completed at the Center for the Study and Treatment of Pain at New York University, which has been awarded the coveted Center of Excellence by the American Pain Society.

Dr. Rafii is a member of the Spine Intervention Society (SIS) and the American Society of Anesthesiologists (ASA).  His interests with regards to the field of Pain Medicine include interventional spine procedures, neuromodulation and the benefits of mindfulness based meditation in the reduction of chronic pain.  He is a firm believer in a multidisciplinary approach to chronic pain management.  In addition to treating pain,  Dr. Rafii values the importance of improving function and quality of life.

In his spare time, Dr. Rafii enjoys being outdoors, playing soccer, and watching Ohio State football.

John R. Gburek, M.D.

Dr. John GburekDr. Gburek was as born in Buffalo, NY and spent his elementary school years as a Bee Cave Bobcat in the Austin suburbs. The remainder of his childhood was spent all throughout the Midwest including in Minnesota, Illinois, and Michigan. Dr. Gburek’s education includes completing a combined Bachelor of Science (BS)/ Doctor of Medicine (MD) Medical Scholars Program at Michigan State University. He completed residency in Anesthesiology at Rush University Medical Center (RUMC) in addition to Fellowship in Chronic Pain Medicine at RUMC under the mentorship of Timothy Lubenow, MD and Asokumar Buvanendran, MD.

In his free time, he likes to participate in water sports, golf, and travel to visit friends and family. Professionally, in addition to ultrasound and fluoroscopically guided injections, Dr. Gburek is interested in management of chronic pain through use of neurostimulation. He employs a biopsychosocial model to pain management and as an actively practicing Catholic is willing to discuss Christian spirituality in relation to mental and emotional health with those who desire. Dr. Gburek’s want to utilize his skills to empower his patients to return to both their careers and family obligations.

Charlotte Loflin, MSN, NP-C

Charlotte Loflin MSN, NP-C has been a nurse since 2007. She received her Bachelors of Science in Nursing from University of Texas at Arlington with honors, and she received her Masters in Adult/Gerontology Nurse Practitioner and Masters of Science in Nursing from Kaplan University, also with honors. Charlotte has extensive critical care experience and spent a majority of her nursing career in the hospital setting. She is board certified by the American Academy of Nurse Practitioners (AANP) and an active member of the American Academy of Pain Medicine.

She has been involved in the Pain Management arena for since 2013, and prior to moving to Austin she was the OR Director for two interventional pain management surgery centers. During her time at the surgery center, Charlotte developed a passion for caring for chronic pain patients.

She spends her free time with her husband, daughter, and three dachshunds.


Lydia Cortez, MSN, NP-C

Lydia Cortez MSN, NP-C is a board certified nurse practitioner by the American Academy of Nurse Practitioners (AANP) who joined Diagnostic Pain Center to focus on managing chronic pain to improve quality of life. She has an extensive background in Primary Care as well as Wound Care. She received her Bachelors of Science in Nursing from Texas A&M-Corpus Christi with honors and her Masters of Science in Nursing, family nurse practitioner, from Texas Tech University with honors.

Lydia is originally from Florida and moved to Texas during high school.  She moved to Austin for college where she earned a Bachelors of Fine Arts degree from The University of Texas at Austin. She and her husband have two children.

In her free time she enjoys hiking, painting/drawing, jewelry making and spending time with her family.




Staff Photo

Our staff is compassionate and well-trained having many years of experience specifically with pain management.