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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. Stephen Thacker:

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Education & Awards

Dr. Thacker graduated from A.T. Still University - Kirksville.


Dr. Thacker has 4 hospital affiliations:

  • Whittier Hospital Medical Center 
  • Downey Regional Medical Center 


  • Spanish

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Additional Information
Dr. Stephen William Thacker DO is a male Family Practitioner, has 33 years of experience and practices in Family Medicine.
Where does Dr. Stephen W. Thacker practice?
Dr. Stephen Thacker has 1 office location.
Dr. Stephen Thacker practices Family Medicine near Brea, CA.
See Brea Primary Care Doctors.