Meet Our Team

  • Tanya S. Dixon, D.O.


    Dr. Dixon is one of approximately 100 neurosurgeons nationally who are fellowship-trained in both endovascular and microsurgical techniques for the treatment of aneurysms, vascular malformations, carotid artery stenosis and other vascular diseases. She completed her fellowship training at the Mayo Clinic and her neurosurgery residency at Ohio University COM-Riverside Methodist/Grant Medical Center in Columbus. She […]

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  • Yves J. Meyer, M.D.


    Dr. Meyer has spent more than 20 years in private practice diagnosing and treating neurological disorders, and is board-certified by the American Board of Neurological Surgery. He completed a research fellowship in neurosurgery at The University of Texas Southwestern Medical Center in Dallas and gained additional training through his general surgery internship and neurological surgery […]

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  • Gregory H. Smith, D.O., F.A.C.O.S.


    Dr. Smith is board-certified by the American Board of Osteopathic Surgery (Neurosurgery) and a Fellow of the American College of Osteopathic Surgeons. He brings more than 20 years of practical experience to North Texas Neurological & Spine Center. Smith earned his medical degree from Kirksville College of Osteopathic Medicine in Kirksville, Mo. He completed his […]

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  • Cyrus Wong, M.D.


    Dr. Cyrus Wong completed his residency in neurosurgery and fellowship training in spinal surgery at Vanderbilt University Medical Center in Nashville. He received his medical degree from the Johns Hopkins University School of Medicine in Baltimore, Md., where he played a part in the development of a novel brainstem tumor model. His unique expertise in […]

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  • Farhan Siddiq, M.D.


    Dr. Siddiq earned his medical degree at Rawalpindi Medical College in Pakistan before coming to the United States. Once in the states, he completed his internship in internal medicine at the University of North Dakota in Fargo and his general surgery internship at the University of Minnesota Medical Center in Minneapolis. He then went on […]

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  • Olaide O. Ajayi, M.D.


    Dr. Ajayi completed his Neurosurgery residency as well as a Complex and Minimally Invasive Spine Fellowship at Loma Linda University Medical Center in Southern California. He also received his Medical Doctorate from the same institution. Dr. Ajayi’s surgical training includes a Visiting Fellowship at the acclaimed Swedish Neuroscience Institute in Seattle, Washington. He has authored […]

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  • Ahmed R. Shakir, M.D.


    Dr. Shakir brings in-depth clinical and teaching experience in neurosurgery to North Texas Neurosurgical & Spine Center. He is board-certified by the American Board of Neurological Surgery and is fellowship-trained in spine surgery from Vanderbilt University Medical Center in Nashville. Dr. Shakir received his medical degree from The University of Texas Southwestern Medical School at […]

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  • Adrian Timothy Harvey, D.O.

    Adrian Harvey, D.O.

    Dr. Harvey is a board-certified neurosurgeon with fellowship training in complex spine surgery. He also completed a one-year fellowship in neurosurgical oncology at The University of Texas MD Anderson Cancer Center in Houston. Dr. Harvey’s area of special focus is the treatment of brain and spine tumors with additional interests in pediatric neurosurgery and spinal […]

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  • John Laurence, P.A.-C


    Mr. Laurence is a certified physician assistant with 13+ years’ experience in surgical sub-specialty practice.

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  • Susan Hobbs, R.N.-B.C., F.N.P.-B.C.


    Ms. Hobbs is a board-certified family nurse practitioner. She received her B.S. in nursing at the University of Missouri at Kansas City.

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  • Kristina Ng, C.R.N.P.


    Ms. Ng is a certified registered nurse practitioner. She earned her nursing degree from the University of Pennsylvania in Philadelphia.

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  • Brie Woods, P.A.-C, M.S., R.D., L.D.


    Ms. Woods received her Master of Physician Assistant Studies from University of North Texas Health Science Center, and is a registered/licensed dietitian.

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  • Melanie Jones, P.A.-C


    Certified physician assistant Melanie Jones began her career in the neurosurgical field in 2013, working as a physician assistant at Ochsner Medical Center in New Orleans, La. She received her Master of Physician Assistant Studies from the Massachusetts College of Pharmacy and Health Sciences in Worcester.

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  • Anna L. Brown, A.G.A.C.N.P., F.N.P.-B.C.


    Anna Brown is certified as a family nurse practitioner, critical care registered nurse and neuroscience registered nurse. Her extensive experience includes providing collaborative care in cardiac and thoracic surgical, rapid response, stroke, intensive care and neurosurgical settings. She comes to North Texas Neurosurgical & Spine Center, a Texas Health Physicians Group practice, from Baylor University […]

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  • Kacie Johnson, C.C.R.N., A.G.A.C.N.P.


    Kacie Johnson is a certified adult-gerontology acute care nurse practitioner and critical care registered nurse. She began her career in the medical field in 2009. Most recently, she served as a neurological ICU nurse involved in the care of critically ill patients facing neurological diseases and illnesses. Johnson graduated with honors with a bachelor’s degree […]

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  • Christopher Mascio, P.A.-C


    Christopher Mascio served as an airborne paratrooper and Staff Sergeant in the United States Army for more than seven years. During his time in the military, he received three commendation medals and six achievement medals. After completing his tour of duty, Christopher worked as an emergency medical technician before joining The American Center for Spine […]

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  • Jessica Rachal, M.S.N., F.N.P.-C, C.C.R.N.


    Jessica Rachal is a critical care nurse and certified family nurse practitioner. She began her career in medicine in 2008 and has spent much of her time in the field working with trauma, critically ill and post-neurosurgical patients. Rachal received her bachelor’s degree in nursing from Louisiana State University Health Sciences Center in New Orleans […]

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  • Shiny Joice, R.N., F.N.P.-B.C.


    Shiny Joice earned her undergraduate degree in nursing in 1998 while living in India. She came to the United States in 2005, after working for years in the areas of emergency medicine, intensive care and open heart surgery recovery. She then spent more than a decade working in trauma intensive care and cardiac care in […]

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  • Eucharia Scroggins, P.A.-C


    Eucharia Scroggins earned a Bachelor of Science degree in Psychology from the University of Houston and a Bachelor of Science degree in Biology from Texas A&M University in Texarkana. She went on to graduate from the Master of Physician Assistant Studies program at Harding University in Searcy, Ark., before returning to the south Texas area […]

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