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Office
1825 4th St
San Francisco, CA 94143Phone+1 415-885-7528Fax+1 415-885-7711- Is this information wrong?
Education & Training
- Stanford Health Care-Sponsored Stanford UniversityResidency, Otolaryngology - Head and Neck Surgery, 2005 - 2010
- Stanford Health CareInternship, Transitional Year, 2005 - 2006
- Stanford University School of MedicineClass of 2005
Certifications & Licensure
- CA State Medical License 2006 - 2024
- American Board of Otolaryngology - Head and Neck Surgery Otolaryngology
Awards, Honors, & Recognition
- CMS Meaningful Use Stage 1 Certification EpicCare Ambulatory EMR, Epic Systems Corporation, 2012-2013
- Fellow (FACS) American College of Surgeons
Publications & Presentations
PubMed
- Comparison of Chronic Sialadenitis Symptom Burden in Patients With Sialolithiasis Versus Stenosis Before and After Sialendoscopy.Amrita Bhat, William R Ryan, Jolie L Chang, Arushi Gulati> ;Otolaryngology--Head and Neck Surgery. 2024 Apr 19
- Rate of occult metastasis in lip squamous cell carcinoma: A systematic review and meta-analysis.Evrim Oral, Indrani Sarkar, Sagar Kansara, Vlad Sandulache, Rula Mualla, Rohan R Walvekar, William Ryan, Patrick Ha> ;Head & Neck. 2024 Mar 18
- Prognostic risk factors of buccal squamous cell carcinoma: A case-control study.Eltawil, Y., Callander, J., Souza, S., El-Sayed, I., George, J., Ha, P., Ryan, W., Xu, M., Heaton, C.> ;Head & Neck. 2024 Feb 27
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Journal Articles
- A Natural Killer–Dendritic Cell Axis Defines Checkpoint Therapy–Responsive Tumor MicroenvironmentsPatrick K Ha, William R Ryan, Nina Bhardwaj, Vincent Chan, Michael D Alvarado, Adil I Daud, Joy Hsu, Nature
- Shorter Interval Between Radiation Therapy and Salvage Laryngopharyngeal Surgery Increases Complication Rates Following Microvascular Free Tissue TransferEric J Formeister, Ivan El-Sayed, William R Ryan, Chase M Heaton, American Journal of Otolaryngology
Authored Content
- Shorter Interval Between Radiation Therapy and Salvage Laryngopharyngeal Surgery Increases Complication Rates Following Microvascular Free Tissue TransferJune 2018
Professional Memberships
- Member
Hospital Affiliations
- UCSF Medical CenterSan Francisco, California
- Zuckerberg San Francisco General Hospital and Trauma CenterSan Francisco, California
- San Francisco VA Medical CenterSan Francisco, California
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