Our Medical Providers

Robert S. Marks M.D.

Robert S. Marks, M.D.

Dr. Marks graduated with high honors from The University of Texas at Austin. From the moment he left Austin, he couldn’t wait to get back. 

After completing his medical school training at The University of Texas Medical Branch at Galveston, he spent two years in a General Surgery residency. The next three year residency was in Anesthesiology at Texas Tech University Health Sciences Center. 

Dr. Marks rounded out 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. There, he was trained by the internationally renowned Dr. Gabor Racz and Dr. Miles Day. 

He’s now board certified by the American Board of Anesthesiology in both Pain Medicine and Anesthesiology. Prior to practicing in Austin, Dr. Marks was an Assistant Professor at Texas Tech University Health Sciences Center. There he enjoyed teaching residents and medical students the fundamentals of Anesthesiology and Pain Management. 

Today, Dr. Marks also dedicates time to presenting 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 and is a two-time recipient of the University Medical Center Safe Surgeon Award.As proud native Texans, Longhorns and 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 horsing around with his three children, running, chess, reading books about quantum physics and playing the piano.

Sauman A. Rafii, M.D.

Sauman A. Rafii, M.D.

Dr. Rafii is board certified by the American Board of Anesthesiology in both Anesthesiology and Pain Medicine. His academic journey started with a combined six-year Bachelor of Science (BS) and Doctor of Medicine (MD) 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 is consistently ranked by US News and World Report as one of the top hospitals in the nation. 

Next came a Pain Medicine fellowship at New York University’s Center for the Study and Treatment of Pain, a program the American Pain Society has awarded its coveted Center of Excellence designation.

Today, Dr. Rafii is a member of the Spine Intervention Society (SIS) and the American Society of Anesthesiologists (ASA). His interests within 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 that chronic pain management requires a multidisciplinary approach. 

Most importantly, Dr. Rafii believes in improving function and quality of life while making a positive impact on each patient he encounters.

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

John R. Gburek, M.D.

John R. Gburek, M.D.

Dr. Gburek was born in Buffalo, NY but spent his elementary school years as a Bee Cave Bobcat in the Austin suburbs. The remainder of his childhood was a tour of the Midwest: Minnesota, Illinois and Michigan. But he never forgot those mild Austin winters. 

In his higher education years, Dr. Gburek combined a Bachelor of Science (BS) and Doctor of Medicine (MD) from the Medical Scholars Program at Michigan State University. He completed a residency in Anesthesiology at Rush University Medical Center (RUMC), in Chicago, Illinois, with a Fellowship in Chronic Pain Medicine.

Professionally, Dr. Gburek is highly trained in neurostimulation, an option for patients to control their chronic pain when the root cause cannot be removed or repaired. He also specializes in ultrasound and fluoroscopically guided injections, but that’s only part of his wheelhouse. 

Taking a holistic approach to pain management, Dr. Gburek also welcomes discussion around spirituality, as well as mental and emotional health with those who desire. Ultimately, he wants to utilize his skills to empower his patients to focus on the people and things they care about, not their pain.In his free time, he likes to participate in water sports, play golf and travel with his friends and family.

Charlotte Loflin, MSN, NP-C

Charlotte Loflin, MSN, NP-C

Charlotte Loflin MSN, NP-C has served as a dedicated nurse since 2007. She received her Bachelors of Science in Nursing from University of Texas at Arlington with honors and her Masters in Adult/Gerontology Nurse Practitioner as well as a Masters of Science in Nursing from Kaplan University, also with honors. Charlotte has extensive critical care experience and spent the 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’s made Pain Management and helping patients find relief her focus since 2013. Prior to her Austin move she was the Operating Room Director for two interventional pain management surgery centers. It was her time there that really solidified her passion helping chronic pain patients get the care and comfort they need.

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

Lydia Cortez, MSN, NP-C

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 helping patients manage chronic pain and improve their 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. After having spent time here, she knew it was the right place for she and her husband to raise their two children.

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