Browse Health
Neurologist (brain, nervous system)
19 years of experience
Accepting new patients
Video profile
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).

Patient Reviews

Patient comments (5)

The overall average patient rating of Dr. Karen Frei is Average. Dr. Frei has been reviewed by 8 patients who have provided 5 comments. The rating is 2.5 out of 5 stars.

Patient Ratings
Ease of Appointment 2.8
Promptness 2.0
Courteous Staff 2.0
Accurate Diagnosis 3.1
Bedside Manner 2.6
Spends Time with Me 2.7
Follows Up After Visit 1.7

Specialties & Research

Dr. Karen Frei, MD is board certified in Neurology.

  • She has special expertise in 7 areas:
  • Alzheimer's Disease
  • Epilepsy
  • Essential Tremor
  • Migraine Disorders
  • Movement Disorders
  • Multiple Sclerosis (MS)
  • Parkinson Disease

Education & Awards

Dr. Frei graduated from Thomas Jefferson University, Philadelphia.


Dr. Frei has 24 hospital affiliations:

  • Fountain Valley Regional Hospital & Medical Center 
  • St. Vincent Medical Center 


  • Spanish
  • English
  • French
  • Vietnamese

Similar doctors nearby

Dr. Nguyen Thong

46 years experience
Fountain Valley, CA

Dr. Daniel Truong

37 years experience
Fountain Valley, CA

Dr. Stephen Jenkins

38 years experience
Fountain Valley, CA

Dr. Mindy Bixby

Fountain Valley, CA

Dr. Ignacio Carrillo-Nunez

27 years experience
Fountain Valley, CA

Dr. George Perrine

50 years experience
Huntington Beach, CA
Search All Similar Doctors
Additional Information
Dr. Karen Phyllis Frei MD is a female Neurologist, has 19 years of experience and practices in Neurology.
Where does Dr. Karen P. Frei practice?
Dr. Karen Frei has 2 office locations.
Dr. Karen Frei practices Neurology near Fountain Valley, CA.
Additional practice locations include: Long Beach, CA.
See Fountain Valley Neurologists.