Skip to Main Content

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
    297 Ratings
    About our process
    Oct 25, 2023
    Oct 07, 2023
    He seemed a bit rushed this visit- but I get it.
    Sep 21, 2023
    Was very thoughtful
    Aug 26, 2023
    Could not be happier with this doctor. He is so nice and such a good listener.
    Aug 17, 2023
    I think I am in awe of how well i am treated at UCSF. Wow!
    Jul 31, 2023
    I feel so fortunate to have Dr. Theo as my neurologist- he is the best!!
    Jul 29, 2023
    Dr. Theo is an outstanding provider in every way. He is highly knowledgeable a great communicator has a warm and caring approach and personality and really makes me feel heard with questions or health concerns I have. I can't thank him enough for all he does for so many people.
    Jul 22, 2023
    This visit went very well I am very pleased and am so happy Dr. Offered tele visit it worked so nice for me. Thank you
    Jul 02, 2023
    Simply outstanding. Gave me great comfort and confidence.
    Jul 01, 2023
    Jun 30, 2023
    This visit was more satisfying than the last. I felt the doctor listened to my statements and questions and responded accordingly. I would have liked a little more discussion about the doctor's opinion of my symptoms . I felt he could have tuned in to my concerns with more explanation . Overall I was satisfied and confident with the interaction.
    Jun 06, 2023
    Good doctor but I have always insisted his P A ( or whatever) be available because she can clarify questions I have etc.
    Jun 01, 2023
    My Surgeon doctor are excellent also my Shunt doctor. I highly recommend .
    May 30, 2023
    The provider is polite pleasant and willing to help me in my problems.
    May 09, 2023
    Very caring and compassionate care provider. I feel very lucky to have been referred to him 10 years ago for my surgery.
    May 06, 2023
    Excellent quality of service.
    Apr 27, 2023
    Loved Dr. Theo who was kind and funny. Very knowledgeable. Informed us is an easy to understanding manner. Made us feel at ease.
    Apr 20, 2023
    I am new to Dr T and seeing him for follow up to previous surgery/radiations with other doctors so not much to judge by except reputation as my case is currently stable
    Apr 19, 2023
    The team didn't check my materials pre-visit. MRI scans were limited to 1.5 scans; Appt. Instructions did not include sending the 2 most recent scans and reports (a mistake limiting to scans in last 3 or 6 months--consider the benign tumor patients please as we don't always get our scans every 8 weeks); not sure doctor read the report of latest scan. This visit should have been postponed/re-scheduled based upon the lack of MRI images.
    Mar 30, 2023
    Dr. Theo was very thorough and easy to talk to. I appreciate his patience with me and my wife and we feel that he is more than qualified to do the job. Thank you Dr.Theo your a blessing to us.
    Mar 30, 2023
    Dr Theo was great
    Mar 21, 2023
    I am SO lucky that Dr. Theo leads my neuro team! Not only does he perform amazing world-class neurosurgery he is also kind thoughtful responsive and a good listener.
    Mar 07, 2023
    Dr. Theo is great. Loved his glasses he was on time if not even early and he was clear with the likelihood nothing more can be done.
    Feb 18, 2023
    Even though the provider met with me. I felt he was cold and this appointment was beneth him.
    Feb 12, 2023
    Very. Good
    Feb 07, 2023
    Always has been a wonderful experience with Dr T and UCSF
    Feb 06, 2023
    I had a pressing concern about the area of closure of my surgery wound from two years ago. There was a piece moving and clicking. I told the doctor and asked him about it and he never responded to that question.
    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