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Thomas J. Gernon,

M.D.

Surgeon

4.9 (202 Ratings)
Biography photo
Location
City of Hope Comprehensive Cancer Center - Duarte
1500 East Duarte Road
Duarte, CA 91010
City of Hope South Pasadena
209 Fair Oaks Avenue
South Pasadena, CA 91030
Specialties
Otolaryngology Head and Neck Surgery
Education
Medical school:

Board Certifications

  • American Board of Otolaryngology
  • American College of Surgeons

Degrees

  • 2005, University of Washington School of Medicine, Seattle, M.D.
  • 1999, University of Washington, Seattle, B.S. in Zoology

Fellowship

  • 2010–2011, Fellowship in Head and Neck Surgery and Microvascular Reconstruction, Department of Otolaryngology, University of Washington, Seattle

Residency

  • 2005–2010, Head and Neck Surgery Resident, Department of Otolaryngology, University of Michigan Health System, Ann Arbor, MI

Internship

  • 2005–2006, General Surgery Intern, Department of Surgery, University of Michigan, Ann Arbor, MI

Professional Experience

  • 2016–present, Associate Clinical Professor, Division of Otolaryngology, Department of Surgery, City of Hope, Duarte, CA
  • 2011–2016, Assistant Professor, Division of Otolaryngology, Department of Surgery, University of Arizona College of Medicine, Tucson, AZ
Academic Appointments
  • Associate Clinical Professor, Division of Otolaryngology/Head and Neck Surgery, Department of Surgery
  • Head and Neck Surgeon
About Me

Thomas J. Gernon, M.D., is a board-certified otolaryngologist and an associate clinical professor of head and neck surgery at City of Hope® Cancer Center Duarte

Dr. Gernon has a strong commitment to community outreach and program development. During his time as an assistant professor in the Division of Otolaryngology at the University of Arizona College of Medicine in Tuscon, he was instrumental in creating and expanding the Head & Neck Oncology Program, serving as its co-director and as medical director of the Outpatient Surgical Specialty Clinics. Under his leadership, the program became a major referral hub in Southern Arizona for patients with advanced head and neck tumors. His clinical interests include diagnosing and managing cancers of the oral cavity, oropharynx, hypopharynx, larynx and salivary glands, with a particular emphasis on HPV-related head and neck cancers. Dr. Gernon’s work has been featured in peer-reviewed journals, and he has presented at both regional and national medical conferences. 

Dr. Gernon earned his undergraduate degree at the University of Washington (UW) in Seattle and went on to receive his medical degree from the UW School of Medicine. While in medical school, he was inducted into the Alpha Omega Alpha Honor Medical Society in recognition of his academic excellence. He began his medical training with a general surgery internship at the University of Michigan in Ann Arbor, where he also completed his residency in otolaryngology and head and neck surgery. He later completed a fellowship in head and neck surgical oncology and microvascular reconstruction at the University of Washington.

Patient reviews
The patient ratings and comments on this page are obtained from an external Press Ganey® outpatient survey provided to all eligible City of Hope patients within one to two weeks of their treatment occurrence. Raw data from the answers to the survey questions about our physicians are calculated by Press Ganey into a one- to five- star rating. In the spirit of transparency, all patient comments are posted as written by the patient, whether they are positive or negative. We only exclude comments if they are deemed to be slanderous or libelous, contain profanity or vulgar language, or do not relate to the patient's experience with the doctor involved. As a result, the comments are the views and opinions of the patients surveyed and are not endorsed by, and may not necessarily reflect the opinion of, City of Hope.
Apr 30, 2026
5.0
"Excellent service"
Apr 9, 2026
2.8
"Never called with results or returned messages"
Apr 7, 2026
5.0
"Provider always helps me make good decisions without providing pressure."
Apr 7, 2026
5.0
"Provider is best doctor ever! Gives me the best care possible and, if appropriate, recommends others who may be helpful."
Mar 31, 2026
5.0
"I find COH staff & volunteers to be, very respectful and kind. I would highly recommend COH to anyone needing medical assistance."
Mar 30, 2026
5.0
"Everyone is compassionate, caring, and professional."
Mar 30, 2026
5.0
"Dr Gernon is always clear and thorough in explaining my concerns."
Mar 25, 2026
5.0
"Dr. Gernon is the best"
Feb 24, 2026
5.0
"Dr. Gernon is an exceptional physician."
Feb 3, 2026
5.0
"Excellent service"
Jan 21, 2026
5.0
"Felt very comfortable from the minute he introduced himself!"
Jan 21, 2026
5.0
"Everyone from parking through the whole process were extremely nice and compassionate"
Jan 17, 2026
5.0
"Excellent care."
Jan 17, 2026
5.0
"Grateful I have City of Hope."
Jan 11, 2026
5.0
"Provider suggests additional treatment options and doctors when he thinks they may be appropriate. He's a surgeon but is happy to connect me with docs who provide other types of treatment to see if such treatments might be beneficial"
Jan 7, 2026
5.0
"Felt very well taken care of. Very Good."
Jan 7, 2026
5.0
"Good from everyone that took care of me good even the parking staff."
Jan 2, 2026
5.0
"All personally care about my wellbeing."
Dec 18, 2025
5.0
"Dr. Thomas is just excellent and has a very kind way of putting you at ease."
Dec 3, 2025
5.0
"[...] Doctor interaction was "Excellent "."
Nov 12, 2025
5.0
"I am recommending him to my cousin"
Oct 31, 2025
5.0
"Top notch team!"
Oct 31, 2025
5.0
"Thank God I found doctor!"
Oct 30, 2025
5.0
"[...] was instrumental in getting me an appointment w Dr Gernon in just one day. Very impressed and grateful"
Oct 30, 2025
5.0
"Excellent experience. Dr Gernon is a caring, thorough doctor."
Oct 28, 2025
5.0
"I feel it was a blessing that I did my surgery at City of Hope!"
Oct 28, 2025
5.0
"Dr. Gernon is amazing and basically a genius! He did such an amazing and successful surgery on me and it was much easier than we thought it would be, He is my hero!!"
Sep 23, 2025
5.0
"Dr Gernon very good dr and understanding and with heart"
Sep 23, 2025
5.0
"A well-known place with good doctors who specialize in treating and curing cancer. Excellent City of Hope"
Sep 4, 2025
5.0
"The whole staff works efficiently, effectively and caringly to get me the care I need. They are all pleasant and kind."
Sep 4, 2025
5.0
"This provider always shows concerns for all my health issues. He seeks help from others if I have a problem that is not specifically related to what he does. He explains options to me clearly and encourages me to make good health decisions. He also offers me the freedom to change my mind if I choose."
Aug 29, 2025
5.0
"Good"
Aug 29, 2025
5.0
"Good"
Aug 22, 2025
5.0
"Very kind. We did not feel rushed. Dr. Gernon took his time and was very open and candid with the questions I was asking."
Aug 13, 2025
5.0
"I wish Dr. Gernon were my primary care doctor. He manifests two characteristics rarely found to his extent- humility and concern. He has always shown a level of care that COH should be fortunate to have on staff."
Aug 1, 2025
5.0
"Dr. Gernon is an excellent, caring surgeon."
Aug 1, 2025
5.0
"Good"
Aug 1, 2025
5.0
"Good"
Jul 3, 2025
5.0
"My doctor explained everything in detail about hos plan and the risk involved. I feel very comfortable in the dr plans"
Jul 3, 2025
5.0
"This is my second time with city of hope for cancer treatment and they go above and beyond to take care of me and my family"