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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).

Learn more about Dr. Siobain Horan:

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Education & Awards

Dr. Horan graduated from St. George's University, Bay Shore.


Dr. Horan has 6 hospital affiliations:

  • Community Memorial Hospital of San Buenaventura 
  • St. John's Regional Medical Center 


  • English

> > > > Dr. Siobain Horan, MD

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Additional Information
Dr. Siobain Horan MD is a female Family Practitioner, has 7 years of experience and practices in Adult Medicine.
Where does Dr. Siobain Horan practice?
Dr. Siobain Horan has 3 office locations.
Dr. Siobain Horan practices Adult Medicine near Ventura, CA.
Additional practice locations include: San Diego, CA and Oxnard, CA.
See Ventura Family Physicians.