Daniel C. Kreatsoulas, MD
Neurosurgeon
Areas of expertise – primary, metastatic and skull base tumors; pituitary tumors; awake craniotomy, minimally invasive craniotomy; endoscopic skull base surgery; laser ablative tumor therapy; robotic cranial surgery; minimally invasive spine surgery, including laminectomy, discectomy, fusion; clinical trials for brain tumors
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Education
- Undergraduate: Bachelor of Science, Biology, Youngstown State University, 2014
- Graduate: Bioethics certificate, Northeast Ohio Medical University, College of Graduate Studies, Rootstown, 2018
- Medical School: Northeast Ohio Medical University, College of Medicine, Rootstown, 2018
- Residency: Neurosurgery, The Ohio State University, Columbus, 2018-2025
- Fellowship: Neurosurgical Oncology, University of Miami Hospitals, 2026
Board Eligible
American Board of Neurological Surgery
Experience
- Mayfield Brain & Spine, Cincinnati: Neurosurgeon, 2026-present;
Primary hospital affiliations*
St. Elizabeth Healthcare Edgewood Hospital, The Jewish Hospital – Mercy Health, Mayfield Spine Surgery Center
*Mayfield is affiliated with most major hospitals in Cincinnati and Northern Kentucky
Professional memberships
- American Association of Neurological Surgeons
- Congress of Neurological Surgeons
- Society for Neuro-Oncology
- Gold Humanism Honors Society
- Alpha Omega Alpha
Publications
View Dr. Kreatsoulas's publications in the PubMed database.
Dr. Bailey's Care Team

Brittany Riley, NP
Nurse Practitioner
Areas of expertise – advanced practice provider for patients with spine disorders (herniated discs, back pain, trauma) and brain disorders (tumors, head injury); orders testing and reviews imaging; patient education; postoperative follow up.
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Education
- Bachelor of Science, Nursing, Eastern Kentucky University, Richmond, 2011
- Master of Science, Nursing, University of Cincinnati, 2017
Certification
- Family Nurse Practitioner, American Academy of Nurse Practitioners
- Registered Nurse: Kentucky and Ohio
- Additional certification: Basic Life Support
Experience
- Mayfield Brain & Spine, Cincinnati: Nurse Practitioner, 2021-present
- The Little Clinic, Cold Spring, Kentucky: Family Nurse Practitioner, 2017-2021
- University of Cincinnati Medical Center: Registered Nurse, Neurosurgical Nursing Unit, 2015-2017
- St. Elizabeth Healthcare, Ft. Thomas, Kentucky: Registered Nurse, Cardiac Transitional Care Unit, 2011-2015
- Galen College of Nursing, Cincinnati: Adjunct Clinical Faculty, 2013-2014
Professional memberships
- American Academy of Nurse Practitioners
Related links
Provider spotlight: Brittany Riley, NP

Holly Sullivan, NP
Nurse Practitioner
Areas of expertise – advanced practice provider for patients with spine disorders (herniated discs, back pain, trauma) and brain disorders (tumors, head injury); orders testing and reviews imaging; patient education; postoperative follow up
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Education
- Associate of Science, Nursing, Bethesda School of Nursing, 2009
- Bachelor of Science, Nursing, Ohio University, Athens, 2016
- Master of Science, Nursing, Ohio University, 2019
Certification
- Family Nurse Practitioner, American Academy of Nurse Practitioners
- Registered Nurse, Ohio
- Additional certifications: Basic Life Support, Advanced Cardiac Life Support
Experience
- Mayfield Brain & Spine, Cincinnati: Nurse Practitioner, 2023-present
- Best Surgery & Therapies: Orthopaedic/Spine Nurse Practitioner and Clinic Manager, 2022-2023
- Ohio Advanced Medical: Family Nurse Practitioner, 2020-2022
- Cincinnati Children's Hospital Medical Center: Registered Nurse, Newborn Intensive Care Unit, 2017-2020
- Mercy Health: Registered Nurse, Orthopaedic and Oncology, 2014-2017
Professional memberships
- American Association of Nurse Practitioners
Office Location
Mayfield Brain & Spine | Crestview Hills, KY
544 Centre View Boulevard
Crestview Hills, Kentucky 41017
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