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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. Karen Fields:

View the full profile to get information on:

  1. Qualifications
  2. What's important to you

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Patient Reviews

Patient comments (1)

The overall average patient rating of Dr. Karen Fields is Good. Dr. Fields has been reviewed by 4 patients who have provided 1 comments. The rating is 4 out of 5 stars.

Patient Ratings
Ease of Appointment 5.0
Promptness 5.0
Courteous Staff 5.0
Accurate Diagnosis 5.0
Bedside Manner 5.0
Spends Time with Me 5.0
Follows Up After Visit 5.0

Specialties & Research

Dr. Karen Fields, MD is board certified in Internal Medicine.

Education & Awards

Dr. Fields graduated from University of Guadalajara, Mexico, San Antonio.


Dr. Fields has 3 hospital affiliations:

  • St. John's Hospital & Health Center 
  • St. John's Regional Medical Center 
  • St. John's Pleasant Valley Hospital 


  • English
  • Spanish

> > > > Dr. Karen Fields, MD

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Additional Information
Dr. Karen L Fields MD is a female Internist, has 27 years of experience and practices in Internal Medicine.
Where does Dr. Karen L. Fields practice?
Dr. Karen Fields has 2 office locations.
Dr. Karen Fields practices Internal Medicine near Oxnard, CA.
Additional practice locations include: Camarillo, CA.
See Oxnard Internists.