Dr. Corey Warner, MD

Dr. Corey Warner, MD

Internal Medicine  ·  
Male  ·  
49 y/o

Accepting new patients

Dr. Corey Warner, MD is an internal medicine specialist in Hidden Valley Lake, CA and has been practicing for 21 years. He specializes in internal medicine, endocrinology, diabetes & metabolism, and more.

St. Helena Medical Specialties

18990 Coyote Valley Rd Ste 10

Hidden Valley Lake, CA 95467
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Insurance Accepted

  • Accepts most major Health Plans. Please contact our office for details.
  • Medicaid of California

Learn about Dr. Warner

Be confident in your decisions by checking out your provider's top areas of care, education, patient reviews and more. Learn about finding the right doctor for you.

Dr. Warner's Experience

Dr. Warner's experience matches your search based on the following criteria:
  • Based on total number of patients treated over the last 12 months
  • Specializes in Internal Medicine
  • Board certified in Internal Medicine
  • No malpractice claims found
  • No sanctions found
  • No board actions found

Care Philosophy

This content was provided by Dr. Warner "Treatment of the whole person, including mind, body & spirit"

5  Specialties

  • Internal Medicine
  • Diabetes Medicine
  • Endocrinology, Diabetes & Metabolism
  • Family Medicine
  • Obesity Medicine

1  Board Certifications

  • Internal Medicine
    Accredited by: American Board of Internal Medicine*

62  Conditions Treated

Read Less

1  Procedures

  • Diabetes Counseling

Background Check

0 Malpractice Claims

No malpractice history found for California.

0 Sanctions

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

0 Board Actions

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


  • Oregon Health and Science University School Of Medicine
    Medical School | Graduated 1997
  • Legacy Emmanuel Hospital and Med Center
    Residency Hospital | Completed

Awards & Recognition

Awards & Honors
  • Healthgrades Honor Roll
Media & Publications

Dr. Warner has no media or publications listed.

Languages Spoken

  • English

Memberships & Professional Affiliations

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

Dr. Warner's Reviews

Likelihood to recommend Dr. Warner


Based on 29 reviews

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Average Wait Time
  • 10 – 15 minutes
Dr. Warner's Performance
  • Trustworthiness
  • Explains condition(s) well
  • Answers questions
  • Time well spent
Office & Staff Performance
  • Scheduling
  • Office environment
  • Staff friendliness
What People Say About Dr. Corey Warner, MD
Dr Warner is professional great bedside manner. Considerate, well knowledged Is perceptive of patients needs. Attentive to patient care. Would definitely recommend him to friends and family.
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Deborrah in Clearlake,Ca – May 17, 2018
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There is no doctor anywhere who could compare to Dr. Warner. He is knowledgable, but without any guile or arrogance. He is caring, attentive to a fault and treats his patients as if they were family. I trust him completely and consider myself privileged to be among his patients.
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shirley hunter in clearlake, ca – Apr 01, 2017
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Dr. Warner is patient, lighthearted, and a great listener.
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CEShore in Kelseyville, CA – Sep 19, 2016
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He has been my doctor for 3 yrs. and is the best doctor ever. He is respectful and very careful and conscientious in prescribing meds, tests and treatments. He is approachable and friendly while keeping a profound level of professionalism. I would recommend him as a Primary Physician.
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Diane Roger in Kelseyville, CA – May 10, 2016
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He has a warm bedside manner and he is a good listener. Also, he maintained his professionalism, even when I was being difficult. I was impressed.
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Atlanta, GA – May 04, 2016
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