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34 years of experience
License & Identifications

A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).

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Education & Awards

Dr. Semmler graduated from University of Missouri at Columbia.


Dr. Semmler has 1 hospital affiliations:

  • Napa State Hospital 

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Additional Information
Dr. Kathleen Gay Semmler MD is a female Psychiatrist, has 34 years of experience and practices in Psychiatry.
Where does Dr. Kathleen G. Semmler practice?
Dr. Kathleen Semmler has 1 office location.
Dr. Kathleen Semmler practices Psychiatry near Fairfield, CA.
See Fairfield Psychiatrists.