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Philip Theodosopoulos, M.D.


Dr. Philip Theodosopoulos is director of the Skull Base Tumor Program and a professor and vice chairman of neurological surgery at UCSF. Before joining UCSF, Theodosopoulos served as the director of Skull Base Surgery at the University of Cincinnati for 10 years.

Theodosopoulos' primary clinical interests involve the treatment of skull base lesions, particularly acoustic neuromas and malignancies, as well as minimally invasive approaches to the skull base. He served as the co-principal investigator for the largest prospective multi-center trial of the surgical treatment of acoustic neuromas, and currently serves on the Medical Advisory Board of the Acoustic Neuroma Association. Theodosopoulos also has extensive expertise in the endoscopic treatment of pituitary adenomas and chordomas and has been a pioneer in the development of new surgical approaches to the skull base.

Theodosopoulos completed his undergraduate work at MIT and medical school at Stanford University. He completed his neurosurgical training at UCSF and a fellowship in cerebrovascular and skull base surgery at the Brigham and Women's Hospital, Harvard University.

He has been faculty on more than 50 national and international surgical courses and serves on the Congress of Neurological Surgeons Education Committee. Theodosopoulos also has extensive expertise in the field of outcomes research, having completed the UCSF Outcome Research and Clinical Epidemiology full curriculum as a resident and having remained involved in outcomes research at the local and national level.


California Center for Pituitary Disorders
400 Parnassus Ave., Eighth Floor
San Francisco, CA 94143
Phone: (866) 559-5543
or (415) 353-7500
Fax: (415) 353-2889

Hours: Monday to Friday
8 a.m. – 5 p.m.

Neuro-Oncology Clinic
400 Parnassus Ave., Eighth Floor
San Francisco, CA 94143
Phone: (415) 353-2966
Fax: (415) 353-2167

Hours: Monday to Friday
8 a.m. – 5 p.m.

Neurosurgery Clinic
400 Parnassus Ave., Eighth Floor
San Francisco, CA 94143
Phone: (415) 353-7500
Fax: (415) 353-2889

Hours: Monday to Friday
8 a.m. – 4:30 p.m.

More about Philip Theodosopoulos


Stanford University School of Medicine 1996


UCSF Medical Center, Neurosurgery 2002


Brigham and Women's Hospital , Cerebrovascular and Skull Base Surgery 2003

Selected Research and Publications

  1. Kurbanov A, Zimmer LA, Theodosopoulos PV, Leach JL, Keller JT. Letter: An Endoscopic Roadmap of the Internal Carotid Artery. Neurosurgery. 2015 Jul; 77(1):E153-4.
  2. Theodosopoulos PV, Ringer AJ. Measuring outcomes for neurosurgical procedures. Neurosurg Clin N Am. 2015 Apr; 26(2):265-9, x.
  3. Anaizi AN, Gantwerker EA, Pensak ML, Theodosopoulos PV. Facial nerve preservation surgery for koos grade 3 and 4 vestibular schwannomas. Neurosurgery. 2014 Dec; 75(6):671-7.
  4. DePowell JJ, Froelich SC, Zimmer LA, Leach JL, Karkas A, Theodosopoulos PV, Keller JT. Segments of the internal carotid artery during endoscopic transnasal and open cranial approaches: can a uniform nomenclature apply to both? World Neurosurg. 2014 Dec; 82(6 Suppl):S66-71.
  5. Cebula H, Kurbanov A, Zimmer LA, Poczos P, Leach JL, De Battista JC, Froelich S, Theodosopoulos PV, Keller JT. Endoscopic, endonasal variability in the anatomy of the internal carotid artery. World Neurosurg. 2014 Dec; 82(6):e759-64.
  6. Taylor CI, Kurbanov A, Zimmer LA, Keller JT, Theodosopoulos PV. Comparing operative exposures of the le fort I osteotomy and the expanded endoscopic endonasal approach to the clivus. J Neurol Surg B Skull Base. 2015 Feb; 76(1):29-34.
  7. Grewal SS, Kurbanov A, Anaizi A, Keller JT, Theodosopoulos PV, Zimmer LA. Endoscopic endonasal approach to the maxillary strut: anatomical review and case series. Laryngoscope. 2014 Aug; 124(8):1739-43.
  8. Son HJ, Karkas A, Buchanan P, Giurintano JP, Theodosopoulos P, Pensak ML, Samy RN. Spontaneous cerebrospinal fluid effusion of the temporal bone: repair, audiological outcomes, and obesity. Laryngoscope. 2014 May; 124(5):1204-8.
  9. Kerr RG, Tobler WD, Leach JL, Theodosopoulos PV, Kocaeli H, Zimmer LA, Keller JT. Anatomic variation of the optic strut: classification schema, radiologic evaluation, and surgical relevance. J Neurol Surg B Skull Base. 2012 Dec; 73(6):424-9.
  10. Gurgel RK, Theodosopoulos PV, Jackler RK. Subtotal/near-total treatment of vestibular schwannomas. Curr Opin Otolaryngol Head Neck Surg. 2012 Oct; 20(5):380-4.
  11. Theodosopoulos PV, Ringer AJ, McPherson CM, Warnick RE, Kuntz C, Zuccarello M, Tew JM. Measuring surgical outcomes in neurosurgery: implementation, analysis, and auditing a prospective series of more than 5000 procedures. J Neurosurg. 2012 Nov; 117(5):947-54.
  12. De Battista JC, Zimmer LA, Theodosopoulos PV, Froelich SC, Keller JT. Anatomy of the inferior orbital fissure: implications for endoscopic cranial base surgery. J Neurol Surg B Skull Base. 2012 Apr; 73(2):132-8.
  13. Sun GH, Shoman NM, Theodosopoulos PV, Kendler A, Pensak ML. Intravascular papillary endothelial hyperplasia of the internal auditory canal. Laryngoscope. 2012 Jan; 122(1):212-5.
  14. De Battista JC, Zimmer LA, Rodríguez-Vázquez JF, Froelich SC, Theodosopoulos PV, DePowell JJ, Keller JT. Muller's muscle, no longer vestigial in endoscopic surgery. World Neurosurg. 2011 Sep-Oct; 76(3-4):342-6.
  15. Theodosopoulos PV, Pensak ML. Contemporary management of acoustic neuromas. Laryngoscope. 2011 Jun; 121(6):1133-7.
  16. Guthikonda B, Tobler WD, Froelich SC, Leach JL, Zimmer LA, Theodosopoulos PV, Tew JM, Keller JT. Anatomic study of the prechiasmatic sulcus and its surgical implications. Clin Anat. 2010 Sep; 23(6):622-8.
  17. Theodosopoulos PV, Leach J, Kerr RG, Zimmer LA, Denny AM, Guthikonda B, Froelich S, Tew JM. Maximizing the extent of tumor resection during transsphenoidal surgery for pituitary macroadenomas: can endoscopy replace intraoperative magnetic resonance imaging? J Neurosurg. 2010 Apr; 112(4):736-43.
  18. Guthikonda B, Pensak ML, Theodosopoulos PV. Delayed facial palsy after the anterior petrosal approach: case report and review of the literature. Neurosurgery. 2010 Apr; 66(4):E845-6; discussion E846.
  19. Theodosopoulos PV, Guthikonda B, Brescia A, Keller JT, Zimmer LA. Endoscopic approach to the infratemporal fossa: anatomic study. Neurosurgery. 2010 Jan; 66(1):196-202; discussion 202-3.
  20. Burkart CM, Theodosopoulos PV, Keller JT, Zimmer LA. Endoscopic transnasal approach to the clivus: a radiographic anatomical study. Laryngoscope. 2009 Sep; 119(9):1672-8.

Publications are derived from MEDLINE/PubMed and provided by UCSF Profiles, a service of the Clinical & Translational Science Institute (CTSI) at UCSF. Researchers can make corrections and additions to their publications by logging on to UCSF Profiles.