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Hilarie C. Tomasiewicz, MD, PhD, is a functional neurosurgeon who specializes in the surgical treatment of movement disorders, epilepsy and pain. She joined the Wellstar Neurosurgery Group in November 2022 after serving as an assistant professor of Neurosurgery, Neurology and Neuroscience at Mount Sinai Hospital in New York City.
Dr. Tomasiewicz obtained her bachelor’s degree in biology from the Massachusetts Institute of Technology (MIT) in Cambridge, MA. She received both her medical degree (MD) and her doctorate in neuroscience (PhD) from the Mount Sinai School of Medicine in New York, where she was elected to the Alpha Omega Alpha Medical Honor Society. Dr. Tomasiewicz completed her neurosurgical residency training at New York-Presbyterian Hospital/Weill Cornell Medical Center and Memorial Sloan Kettering Cancer Center Hospital in New York, NY. She then completed a fellowship in stereotactic and functional neurosurgery and surgical epilepsy at Emory University Hospital in Atlanta, GA.
Dr. Tomasiewicz has specific expertise in caring for patients with movement disorders, seizures and chronic pain.
Areas of Focus
Dr. Tomasiewicz is trained in stereotactic & functional neurosurgery and is an expert in the current techniques of functional neurosurgery such as deep brain stimulation (DBS), selective laser ablation for epilepsy, robotic-assisted stereotactic EEG as well as advanced procedures for chronic pain.
Conditions treated:
Dystonia
Epilepsy
Essential tremor
Normal pressure hydrocephalus (NPH)
Obsessive compulsive disorder (OCD)
Pain
Cancer/palliative
Chronic pain
Facial pain
Trigeminal neuralgia
Parkinson’s disease
Post-laminectomy syndrome
Seizures
Spasticity
Tourette’s Syndrome
Specialties
Neurosurgery
Education & Training
Icahn School of Medicine at Mount Sinai
Degree
Doctor of Medicine
Residency
New York-Presbyterian Hospital (Cornell Campus)
Fellowship
Emory University School of Medicine
Hospital Affiliations
Wellstar Kennestone Hospital
Languages spoken
English
Patient Reviews
Overall patient rating
4.7
Based on 51 patient ratings
I'd recommend this provider to family and friends
I'd recommend this practice to family and friends
Earned my trust
Listened to me carefully
Shared the right amount of information
All reviews have been submitted by patients after seeing the provider.For more information about the review system, check out this Learn more about our review system.
Patient Reviews
5
The doctor was warm and friendly, I love that she shook our hands (sanitizing before and when leaving the office). She was knowledgeable, obviously enjoys her job and made us feel confident in her ability to handle the procedure which she has done many times.
March 31, 2025
2
The doctor was very kind and very accommodating, and I like how she handled my son. I have a special needs son, and it's extremely important to me that people are comfortable in dealing with him. He made me feel very comfortable. I would recommend her to anyone. Thank you.
March 26, 2025
5
Really grateful for the outstanding care and support from Dr. Thomasiewicz and her staff.
March 19, 2025
5
Dr. Tomasiewicz was on call the morning of my surgery and had
March 2, 2025
5
Thank you to Dr. T and her staff for expediting my son's procedure.
January 22, 2025
5
She's Excellent!!!!
January 21, 2025
5
I left with a with the understanding of what will happen the entire time of surgery and what to expect once I get home
January 19, 2025
5
So efficient in the office. The doctor was very reassuring. Wonderful experience.
January 19, 2025
4
I believe you're overusing the MyChart. I do not need all these texts that are coming in that are redundant. This last appointment you're trying to set up, I got calls about it before I even got home. I got calls in the evening, calls during my dinner. You're overusing this. We discussed what the process was when I was there at the office. Thank you.
December 6, 2024
5
I've never had a doctor like Dr. T. She spent so much time with me and my husband. She is awesome!
November 25, 2024
5
It was a very good appointment, everyone was so nice especially the doctor .
November 25, 2024
5
Everyone were so friendly and helpful especially the doctor. She was amazing.
October 22, 2024
5
Dr T is wonderful
October 20, 2024
5
The Doctor was exceptional, in her warm manner, understanding, and knowledge. I look forward to our next visit.
October 20, 2024
5
Dr. Tomasiewicz was very pleasant, helpful, and enthusiastic. She took the time to listen to my questions and to answer them at the level of detail I wanted.
October 5, 2024
5
Great people Friendly caring Dr T is wonderful and knowledgeable very informative to your care
September 29, 2024
5
Dr. T is wonderful. Life changing what her surgery did for me.
September 29, 2024
5
The Drs. Are phenomenal, as is the entire staff
September 27, 2024
5
I was very impressed by the Doctors Professionalism and Personage.
June 14, 2024
5
Dr. and staff very knowledgeable, professional, and courteous
May 26, 2024
5
The office staff and Dr. T. are always so very friendly, polite and supportive... Dr. T. is one of my favorite people (in general-great personality) as well as one of my favorite healthcare providers, she makes me feel very special and I know I'm in the best hands/care possible regarding my neurological health!
May 15, 2024
5
The doctor was warm and friendly, I love that she shook our hands (sanitizing before and when leaving the office). She was knowledgeable, obviously enjoys her job and made us feel confident in her ability to handle the procedure which she has done many times.
March 31, 2025
5
Really grateful for the outstanding care and support from Dr. Thomasiewicz and her staff.
March 19, 2025
5
Dr. Tomasiewicz was on call the morning of my surgery and had
March 2, 2025
5
Thank you to Dr. T and her staff for expediting my son's procedure.
January 22, 2025
5
She's Excellent!!!!
January 21, 2025
5
I left with a with the understanding of what will happen the entire time of surgery and what to expect once I get home
January 19, 2025
5
So efficient in the office. The doctor was very reassuring. Wonderful experience.
January 19, 2025
5
I've never had a doctor like Dr. T. She spent so much time with me and my husband. She is awesome!
November 25, 2024
5
It was a very good appointment, everyone was so nice especially the doctor .
November 25, 2024
5
Everyone were so friendly and helpful especially the doctor. She was amazing.
October 22, 2024
5
Dr T is wonderful
October 20, 2024
5
The Doctor was exceptional, in her warm manner, understanding, and knowledge. I look forward to our next visit.
October 20, 2024
5
Dr. Tomasiewicz was very pleasant, helpful, and enthusiastic. She took the time to listen to my questions and to answer them at the level of detail I wanted.
October 5, 2024
5
Great people Friendly caring Dr T is wonderful and knowledgeable very informative to your care
September 29, 2024
5
Dr. T is wonderful. Life changing what her surgery did for me.
September 29, 2024
5
The Drs. Are phenomenal, as is the entire staff
September 27, 2024
5
I was very impressed by the Doctors Professionalism and Personage.
June 14, 2024
5
Dr. and staff very knowledgeable, professional, and courteous
May 26, 2024
5
The office staff and Dr. T. are always so very friendly, polite and supportive... Dr. T. is one of my favorite people (in general-great personality) as well as one of my favorite healthcare providers, she makes me feel very special and I know I'm in the best hands/care possible regarding my neurological health!
May 15, 2024
4
I believe you're overusing the MyChart. I do not need all these texts that are coming in that are redundant. This last appointment you're trying to set up, I got calls about it before I even got home. I got calls in the evening, calls during my dinner. You're overusing this. We discussed what the process was when I was there at the office. Thank you.
December 6, 2024
2
The doctor was very kind and very accommodating, and I like how she handled my son. I have a special needs son, and it's extremely important to me that people are comfortable in dealing with him. He made me feel very comfortable. I would recommend her to anyone. Thank you.
March 26, 2025
2
The doctor was very kind and very accommodating, and I like how she handled my son. I have a special needs son, and it's extremely important to me that people are comfortable in dealing with him. He made me feel very comfortable. I would recommend her to anyone. Thank you.
March 26, 2025
4
I believe you're overusing the MyChart. I do not need all these texts that are coming in that are redundant. This last appointment you're trying to set up, I got calls about it before I even got home. I got calls in the evening, calls during my dinner. You're overusing this. We discussed what the process was when I was there at the office. Thank you.
December 6, 2024
5
The doctor was warm and friendly, I love that she shook our hands (sanitizing before and when leaving the office). She was knowledgeable, obviously enjoys her job and made us feel confident in her ability to handle the procedure which she has done many times.
March 31, 2025
5
Really grateful for the outstanding care and support from Dr. Thomasiewicz and her staff.
March 19, 2025
5
Dr. Tomasiewicz was on call the morning of my surgery and had
March 2, 2025
5
Thank you to Dr. T and her staff for expediting my son's procedure.
January 22, 2025
5
She's Excellent!!!!
January 21, 2025
5
I left with a with the understanding of what will happen the entire time of surgery and what to expect once I get home
January 19, 2025
5
So efficient in the office. The doctor was very reassuring. Wonderful experience.
January 19, 2025
5
I've never had a doctor like Dr. T. She spent so much time with me and my husband. She is awesome!
November 25, 2024
5
It was a very good appointment, everyone was so nice especially the doctor .
November 25, 2024
5
Everyone were so friendly and helpful especially the doctor. She was amazing.
October 22, 2024
5
Dr T is wonderful
October 20, 2024
5
The Doctor was exceptional, in her warm manner, understanding, and knowledge. I look forward to our next visit.
October 20, 2024
5
Dr. Tomasiewicz was very pleasant, helpful, and enthusiastic. She took the time to listen to my questions and to answer them at the level of detail I wanted.
October 5, 2024
5
Great people Friendly caring Dr T is wonderful and knowledgeable very informative to your care
September 29, 2024
5
Dr. T is wonderful. Life changing what her surgery did for me.
September 29, 2024
5
The Drs. Are phenomenal, as is the entire staff
September 27, 2024
5
I was very impressed by the Doctors Professionalism and Personage.
June 14, 2024
5
Dr. and staff very knowledgeable, professional, and courteous
May 26, 2024
5
The office staff and Dr. T. are always so very friendly, polite and supportive... Dr. T. is one of my favorite people (in general-great personality) as well as one of my favorite healthcare providers, she makes me feel very special and I know I'm in the best hands/care possible regarding my neurological health!
May 15, 2024
5
The doctor was warm and friendly, I love that she shook our hands (sanitizing before and when leaving the office). She was knowledgeable, obviously enjoys her job and made us feel confident in her ability to handle the procedure which she has done many times.
March 31, 2025
2
The doctor was very kind and very accommodating, and I like how she handled my son. I have a special needs son, and it's extremely important to me that people are comfortable in dealing with him. He made me feel very comfortable. I would recommend her to anyone. Thank you.
March 26, 2025
5
Really grateful for the outstanding care and support from Dr. Thomasiewicz and her staff.
March 19, 2025
5
Dr. Tomasiewicz was on call the morning of my surgery and had
March 2, 2025
5
Thank you to Dr. T and her staff for expediting my son's procedure.
January 22, 2025
5
She's Excellent!!!!
January 21, 2025
5
I left with a with the understanding of what will happen the entire time of surgery and what to expect once I get home
January 19, 2025
5
So efficient in the office. The doctor was very reassuring. Wonderful experience.
January 19, 2025
4
I believe you're overusing the MyChart. I do not need all these texts that are coming in that are redundant. This last appointment you're trying to set up, I got calls about it before I even got home. I got calls in the evening, calls during my dinner. You're overusing this. We discussed what the process was when I was there at the office. Thank you.
December 6, 2024
5
I've never had a doctor like Dr. T. She spent so much time with me and my husband. She is awesome!
November 25, 2024
5
It was a very good appointment, everyone was so nice especially the doctor .
November 25, 2024
5
Everyone were so friendly and helpful especially the doctor. She was amazing.
October 22, 2024
5
Dr T is wonderful
October 20, 2024
5
The Doctor was exceptional, in her warm manner, understanding, and knowledge. I look forward to our next visit.
October 20, 2024
5
Dr. Tomasiewicz was very pleasant, helpful, and enthusiastic. She took the time to listen to my questions and to answer them at the level of detail I wanted.
October 5, 2024
5
Great people Friendly caring Dr T is wonderful and knowledgeable very informative to your care
September 29, 2024
5
Dr. T is wonderful. Life changing what her surgery did for me.
September 29, 2024
5
The Drs. Are phenomenal, as is the entire staff
September 27, 2024
5
I was very impressed by the Doctors Professionalism and Personage.
June 14, 2024
5
Dr. and staff very knowledgeable, professional, and courteous
May 26, 2024
5
The office staff and Dr. T. are always so very friendly, polite and supportive... Dr. T. is one of my favorite people (in general-great personality) as well as one of my favorite healthcare providers, she makes me feel very special and I know I'm in the best hands/care possible regarding my neurological health!
May 15, 2024
5
The office staff and Dr. T. are always so very friendly, polite and supportive... Dr. T. is one of my favorite people (in general-great personality) as well as one of my favorite healthcare providers, she makes me feel very special and I know I'm in the best hands/care possible regarding my neurological health!
May 15, 2024
5
Dr. and staff very knowledgeable, professional, and courteous
May 26, 2024
5
I was very impressed by the Doctors Professionalism and Personage.
June 14, 2024
5
The Drs. Are phenomenal, as is the entire staff
September 27, 2024
5
Dr. T is wonderful. Life changing what her surgery did for me.
September 29, 2024
5
Great people Friendly caring Dr T is wonderful and knowledgeable very informative to your care
September 29, 2024
5
Dr. Tomasiewicz was very pleasant, helpful, and enthusiastic. She took the time to listen to my questions and to answer them at the level of detail I wanted.
October 5, 2024
5
The Doctor was exceptional, in her warm manner, understanding, and knowledge. I look forward to our next visit.
October 20, 2024
5
Dr T is wonderful
October 20, 2024
5
Everyone were so friendly and helpful especially the doctor. She was amazing.
October 22, 2024
5
It was a very good appointment, everyone was so nice especially the doctor .
November 25, 2024
5
I've never had a doctor like Dr. T. She spent so much time with me and my husband. She is awesome!
November 25, 2024
4
I believe you're overusing the MyChart. I do not need all these texts that are coming in that are redundant. This last appointment you're trying to set up, I got calls about it before I even got home. I got calls in the evening, calls during my dinner. You're overusing this. We discussed what the process was when I was there at the office. Thank you.
December 6, 2024
5
So efficient in the office. The doctor was very reassuring. Wonderful experience.
January 19, 2025
5
I left with a with the understanding of what will happen the entire time of surgery and what to expect once I get home
January 19, 2025
5
She's Excellent!!!!
January 21, 2025
5
Thank you to Dr. T and her staff for expediting my son's procedure.
January 22, 2025
5
Dr. Tomasiewicz was on call the morning of my surgery and had
March 2, 2025
5
Really grateful for the outstanding care and support from Dr. Thomasiewicz and her staff.
March 19, 2025
2
The doctor was very kind and very accommodating, and I like how she handled my son. I have a special needs son, and it's extremely important to me that people are comfortable in dealing with him. He made me feel very comfortable. I would recommend her to anyone. Thank you.
March 26, 2025
5
The doctor was warm and friendly, I love that she shook our hands (sanitizing before and when leaving the office). She was knowledgeable, obviously enjoys her job and made us feel confident in her ability to handle the procedure which she has done many times.
