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Philip V. Theodosopoulos


Residency Program Director, Neurological Surgery
Director, Skull Base Tumor Program

Dr. Philip Theodosopoulos is director of the Skull Base Tumor Program and vice chair of neurological surgery at UCSF. Before joining UCSF, he served as director of skull base surgery at the University of Cincinnati for 10 years.

Theodosopoulos cares primarily for patients with skull base lesions, particularly malignancies and acoustic neuromas – noncancerous tumors that grow on nerves near the ear. His expertise includes endoscopic treatment of pituitary adenomas and chordomas as well as minimally invasive approaches to the skull base.

Theodosopoulos has been a pioneer in the development of new surgical approaches to the skull base. He served as co-principal investigator for the largest prospective multicenter trial of surgical treatment for acoustic neuromas, and he currently serves on the Acoustic Neuroma Association's medical advisory board.

He also has extensive expertise in research on patient outcomes. As a resident at UCSF, he completed the full curriculum for outcomes research and clinical epidemiology, and he continues to be involved in outcomes research at both the local and national levels.

Theodosopoulos earned his undergraduate degree at the Massachusetts Institute of Technology and completed medical school at Stanford University. He completed his neurosurgical training at UCSF, followed by a fellowship in cerebrovascular and skull base surgery at the Brigham and Women's Hospital, an affiliate of Harvard Medical School.

Theodosopoulos has been on the faculty for more than 50 national and international surgical courses. He serves on the education committee for the Congress of Neurological Surgeons. He serves as residency program director for neurological surgery at UCSF.

  • Education

    Stanford University School of Medicine, 1996

  • Residencies

    UCSF Medical Center, Neurosurgery, 2002

  • Fellowships

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

  • Board Certifications

    Neurological Surgery, American Board of Neurological Surgery

  • Academic Title


Where I see patients (3)

    My reviews


    Overall Experience
    299 Ratings
    About our process
    Jan 17, 2023
    I still don't know what my side affects of the radiation treatment that I will be facing.
    Dec 15, 2022
    So grateful for my surgery and care from Dr. Theodosopoulos as well as his advice and monitoring going forward.
    Dec 13, 2022
    Dr. Theodosopoulos is wonderful. He has always been very professional thorough and personable with me.
    Dec 08, 2022
    Very professional
    Dec 04, 2022
    Dr. Philip Theo is great thorough knowlegable friendly & patient.
    Nov 10, 2022
    Dr. Theo was super knowledgeable caring and directed the meeting to portray a clear picture of what was going on how to treat it with care and compassion.
    Sep 22, 2022
    I was in the hospital from a brain bleed at the time of our visit and the Dr addressed that as well as the brain tumor our conversation was scheduled to discuss.
    Sep 17, 2022
    We highly recommend UCSF and the staff!!!
    Sep 08, 2022
    First time meeting Dr. Theo. He is very nice.
    Sep 06, 2022
    My concerns were not addressed and suggestions for symptom relief were not made. The doctor seemed bored and not interested in helping.
    Aug 29, 2022
    Jul 23, 2022
    My doctor Dr. Theodosopoulos is absolutely brilliant kind knowledgeable. I trust him implicitly.
    Jun 11, 2022
    Literally exceeded my highest expectations absolutely every single day. The entire team was absolutely incredible!
    Jun 05, 2022
    This is my second visit with Dr. Theo. Always professional informative caring. I can tell when a Doctor cares about a patient and I could tell the Dr. Theo cared about me and my situation.
    Jun 04, 2022
    My meeting with the provider lasted 6 minutes. I am sure there is more to be said about my condition and that there are questions I should have asked but the provider didn't have time to go much beyond a statement that my condition hadn't changed. Again really good news and I didn't need more but given how hard it was to get to that result I would have liked more explanation.
    May 25, 2022
    Dr Theo !!!! Thank you from all my heart.
    May 07, 2022
    Mar 17, 2022
    Excellent doctor!!
    Mar 10, 2022
    Very satisfied with the doctor and staff.
    Mar 01, 2022
    I found him condescending and inconvenienced by my questions.
    Feb 24, 2022
    Good Experience
    Jan 25, 2022
    He was obviously tired. I am sorry he appeared to be overworked and at the very end of his patience.
    Dec 21, 2021
    Outstanding skills!
    Dec 09, 2021
    Doctor is having a meeting with his partners to decide corse of action
    Nov 09, 2021
    Dr. Theo is the best.
    Oct 28, 2021
    Dr. Theo is a neurosurgeon. His bedside manner is...not warm or fuzzy. I know that and I didn't retain him for his bedside manner or patient interface. He needed to perform brain surgery and he did so brilliantly. That said I do wish his team's ship ran a bit more on time.
    Sep 19, 2021
    I had brain tumor surgery that Dr. Theo and his staff operated on and have come back for my regular checkups (I wasn't able to make it last year due to covid but thankful that I was able to come in this year). Dr. Theo and team has always taken good care of me and I feel lucky that everything has been working out. I want to express my appreciation and thanks for everything that he and the team has done!
    Sep 16, 2021
    Zoom visits aren't great for human connection but Dr. Theodosopoulos is obviously a rock star surgeon and that's what you want.
    Aug 18, 2021
    Very professional but also kind and personable
    Aug 10, 2021
    He is an excellent neurosurgeon and a kind man. His communication skills are better when with his PA.
    Jun 18, 2021
    Very professional and caring.
    Jun 09, 2021
    great doctor and his staff are amazing
    Jun 04, 2021
    I feel lucky to have dr. Theo as my no. 1
    Jun 03, 2021
    May 27, 2021
    Still waiting to get information about next steps expected a phone call by now to schedule surgery. Kinda disappointing
    May 25, 2021
    As this was my first visit with Dr. Theo I was pleasantly surprised at his command of my situation professionalism and patience.
    May 25, 2021
    I like my provider.
    May 25, 2021
    Dr. Theodosopoulos is always very thorough and this appointment was no different.
    Apr 20, 2021
    I explained that I am a Healthcare attorney and therefore had read my medical records carefully from Highland Hospital and had googled a few of the terms on which I needed some explanation and his response was "DON'T GOOGLE!" I thought that from professional to professional I didn't get much respect. He was dismissive about my questions about my subdural hematoma which to me were very importnat.
    Apr 15, 2021
    The communication was excellent and we always felt informed.
    Apr 06, 2021
    I am not tech friendly. My teenage neighbor had to set the process up for me. Everything went very smoothly.