Dr. Corey Maas, MD
New Patients

Dr. Corey Maas, MD


Ear, Nose, and Throat | Male

Maas Clinic 2400 Clay St San Francisco, CA 94115 Get Directions


Dr. Corey Maas, MD is an ear, nose, and throat doctor who practices in San Francisco, CA. He is 56 years old and has been practicing for 31 years. Dr. Maas is affiliated with California Pacific Medical Center - Pacific Campus.

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Dr. Maas' Experience

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Board Certifications

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Conditions Treated

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Procedures Performed

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Languages Spoken

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Memberships & Professional Affiliations

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Visiting Dr. Maas

Affiliated Hospitals

Hospital Quality
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Dr. Maas' Reviews

Likelihood of recommending Dr. Maas to family and friends
based on 7 total surveys (4 with reviews)
Dr. Maas' Performance
  • Trustworthiness
  • Explains condition(s) well
  • Answers Questions
  • Time well spent
Office & Staff Performance
  • Scheduling
  • Office environment
  • Staff friendliness
  • Average wait time
    10 to 15 minutes
Patient Reviews (4)
Fairfax, CA |
Very knowledgeable
in San Francisco, CA |
Dr. Maas is easily the best surgeon in SF. Easily. I've had two procedures plus IPL, and he has changed my life for the better. Way better in many ways. I've seen some negative reviews on him, and I must admonish you to NOT believe them . I think they were written by imposters. The negativity they talk about is just not possible or real. Go visit his office yourself for a consult. You will see first hand the professionalism and trust in that office. I've been a patient for ten years.
in san francisco |
Dr. Maas was able to show me what my post surgery outcome would look like via a computer program in his office. This really helped to decide on the size and shape. Other doctors I consulted with did not have this technology.
in Tahoe City, CA |
Dr. Maas exceeded my expectations on every level. My lower face lift and upper eye lift have a completely natural appearance. The compliments on my appearance following my procedures - without anyone knowing I had surgery - were innumerable. I was treated with great sensitivity and respect from my first visit through my last post surgical appointment. I vetted Dr. Maas thoroughly and my research work paid off! I cannot recommend Dr. Maas highly enough!
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Dr. Maas' experience matches your search based on the following criteria:

  •  Based on total number of patients treated over the last 12 months
  •  Specializes in Ear, Nose, and Throat
  •  Board certified in Otolaryngology
  •  No malpractice claims found
  •  No sanctions found
  •  No board actions found

Awards & Recognition

  • Awards & Honors
    • Healthgrades Honor Roll
    What is a recognized doctor
  • Media & Publications

    Dr. Maas has no media or publications listed.

Background Check

  • 0
    Malpractice Claims

    No malpractice history found for California.

    What is medical malpractice
  • 0

    No sanctions history found for the years that Healthgrades collects data.

    What is a sanction or disciplinary action
  • 0
    Board Actions

    No board actions found for the years that Healthgrades collects data.

    What are board actions

Board Certifications

Why It Matters: Dr. Maas' Board Certifications

Board certification should be one of your top considerations when choosing a doctor. Board certification is an official recognition given to doctors who have met specific requirements set by national medical specialty boards in the... More

  • Otolaryngology

Conditions Treated

  • Cancer


  • Medical School
    University Of Florida

    Graduated in 1986

  • Internship Hospital
    Saint Louis University Hospital
  • Residency Hospital
    Saint Louis University Hospital
  • Fellowship Hospital
    Ucsf Medical Center

Languages Spoken

  • English
  • Spanish

Memberships &
Professional Affiliations

Dr. Maas does not have any memberships or affiliations listed. If you are Dr. Maas and would like to add memberships or affiliations, please update your free profile.


  • Ear, Nose, and Throat

Procedures Performed

Dr. Maas does not have any procedures listed. If you are Dr. Maas and would like to add procedures you perform, please update your free profile.