Portrait of Philip V. Theodosopoulos
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Philip V. Theodosopoulos, MD

NeurosurgeryDirector, Skull Base Tumor Program
Neurosurgery Parnassus
415-353-7500
Portrait of Philip V. Theodosopoulos
Portrait of Philip V. Theodosopoulos
ucsf logo

Philip V. Theodosopoulos, MD

NeurosurgeryDirector, Skull Base Tumor Program
Neurosurgery Parnassus
415-353-7500

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About me

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 & training

Board certification

  • Neurological Surgery, American Board of Neurological Surgery

Fellowship

  • Brigham and Womens Hospital GME

Residency

  • Neurosurgery, UCSF Graduate Medical Education

Internship

  • General Surgery, UCSF Graduate Medical Education

Degree

  • MD, Stanford University School of Medicine

My expertise

Locations

    Reviews

    Average rating

    4.8
    4.8 out of 5 Stars
    276 ratings
    About provider reviews

    Showing 1-6 of 52 reviews

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    • 4.8 out of 5 Stars
      January 28, 2026

      The doctor answered all my questions and I feel confident in his knowledge and experience. He explained risks and benefits and the procedure well.

    • 5 out of 5 Stars
      January 27, 2026

      My questions were all answered and Dr. Theo was very attentive about my future care.

    • 3.9 out of 5 Stars
      January 11, 2026

      I was left with a lot of questions

    • 4.8 out of 5 Stars
      January 9, 2026

      Very grateful for the caring of treatment and keeping in touch after the surgery. Also amazed as how everything is explained and covered in the I structions.

    • 5 out of 5 Stars
      January 6, 2026

      Follow up care to be decided

    • 5 out of 5 Stars
      October 4, 2025

      The doctor went over test results, provided excellent recommendations and listened to my concerns and situation

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