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Meet the Staff
Isela Cruz, Receptionist

Certified MA, certified CPR and FIRST AID. I am the head medical assistant and office manager to Dr. Tan. I'm on the floor with Dr. Tan all day, Monday through Thursdays. I love being hands on with patients and doing whatever I can to meet their medical needs. I enjoy working with Dr. Tan because he believes in treating all of our patients like they are a member of his own family. I have two kids, Nathaniel and Zoey. When I'm not chasing these two around, I am doing crafts.

Edward Castillo, EMG/NCV Tech
I am an RNCVT with 25 years in neurophysioliology performing, NCV, EMG, EEG, and Evoked Potential's.  I graduated from the school of Medicine at University of San Carlos in Guatemala City. I have been working with Dr. Tan for a few years and he is a very hard worker and conscientious.I have been married for 31 years and have three children. We love to have family cookouts!
Jessica, Medical Assistant
I am one of the back office nationally certified medical assistants for Dr Tan's medical staff. I will be handling your back office needs such as prescription refills, prior authorizations, referrals,appeals, fmla, disability, test scheduling and any questions you may have related to your health. In my free time I enjoy downtime with my family and making memories!
Shawn Gormley, EEG Tech
I have 16 yrs experience as an EEGT, PSGT and NCT. I have been working with Dr Tan for 12 years. Dr. Tan is special to me because of his work ethics. All of his patients share with me about how he listens to them and is sincere about finding an answer to their issue.  I am married to Bethany and we have two kids, Ellie and Ely.  We love doing anything outdoors and just being in the sun.
Meet Dr. Simon Tan, M.D.

Dr. Simon Tan is a neurologist in Southlake, Texas and Board certified in Neurology by the American Board of Psychiatry and Neurology.  He received his medical degree from The University of Sto Tomas in the Philippines and has been in practice for over 15 years. He feels very blessed to be able to do work that he truly enjoys every day. He believes neurology is the best career in the world. He loves having the opportunity to meet and get to know people of all ages and backgrounds and having the opportunity to provide a wonderful service to his patients that, in some cases, can be life changing.


Education & Medical Training

  • Graduate Bachelor of Science in

        Medical Technology at University of Sto Tomas

  • Graduate Doctor of Medicine at University of Sto Tomas

  • Post Graduate Residency Training in Internal Medicine                                                        
    Brooklyn Hospital Center

        Brooklyn, NY 

  • Post Graduate Residency Training in Neurology                                                                    University of Texas Southwestern                                                                                 
    Medical Center in Dallas, Tx.

  • Fellowship, Neuromuscular disorder/ EMG

    University of Texas Southwestern

    Medical Center of Texas Southwestern                                                                                  

  • Current: Private Practice-Simon S. Tan M.D. P.A. General Neurology/ NeuroMuscular Disease in Southlake, Tx.

  • Current : Assistant Clinical Professor in Neurology University of Texas Southwestern Medical Center in Dallas, Tx.


Awards, Honors & Recognition

Research and Publications:

  • Tan, SS, Wolfe, G, Nations, S “Amyloid Myopathy” abstract, Carrell Krusen Symposium in Dallas February 2002.

  • Tan, SS “Botulism: Different Electrodiagnostic presentation” abstract, Carrell Krusen

       Symposium at Dallas February 2002

  • Tan, SS, Wolfe, G, Mickey, B “ Polyneuropathy in NF2” abstract, Carrell Krusen 

       Symposium in Dallas February 2001

  • Tan, SS, Sinon J  “ Comparing NSS and PVP Iodine as Irrigating Solutions.”

        Makati Medical Center Proceedings, 1993


Professional Organizations:

  •  Member, American Academy of Neurology

  •  Member, Texas Neurology Society

  •  Member, American Medical Association

  •  Fellow, American Board of Disability Analysts

  • Diplomate of Neurology and Psychiatry

  •  Diplomate, Philippine College of Emergency Medicine and Acute Care

  •  Life Member, UST Medical Alumni Association

  •  Member, Makati Medical Center Alumni Association


Dr. Tan loves spending time with his wife Jennie and their two children, Ryan and Simone.

Dr. Tan and his wife, Jennie Tan.


A Physician who specializes in the diagnosis and nonsurgical management of disorders of the nervous system are called neurologist. 

Physicians in other disciplines will often consult a neurologist as the principal specialist involved in evaluating a patient with a suspected neurologic disorder.

Neurologists are experienced in carrying out and interpreting results of specialized neurologic tests, such as brain or spinal cord imaging, studies of the electrical activity of the brain (electroencephalography) or peripheral muscles and nerves (electromyography, nerve conduction studies), evaluations to identify problems during sleep (e.g., sleep-related movement or breathing disorders), and spinal fluid tests (spinal tap).

Once a diagnosis is reached, the neurologist’s role in patient care varies depending on the severity and complexity of the diagnosis.

For example, a neurologist may initially treat a patient who has suffered a head injury or stroke or who has newly diagnosed migraine and then may serve as a consultant on that patient’s ongoing treatment and management.

A neurologist may be the principal care provider for patients with uncommon or difficult-to-treat conditions or with disorders that require frequent care (e.g., epilepsy, multiple sclerosis, Parkinson’s disease).


Accepting New Patients

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