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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).

Patient Reviews

Patient comments (1)

The overall average patient rating of Dr. Derek Mafong is Excellent. Dr. Mafong has been reviewed by 6 patients who have provided 1 comments. The rating is 5 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. Derek Mafong, MD is board certified in Internal Medicine and Endocrinology, Diabetes & Metabolism.

  • He has special expertise in 7 areas:
  • Diabetes
  • Diabetes Mellitus
  • Diabetes
  • Lipid Metabolism Disorders
  • Obesity
  • Osteoporosis
  • Thyroid Diseases

Education & Awards

Dr. Mafong graduated from University of California at San Francisco. He has 2 awards.

Patients' Choice Award (2014)
Compassionate Doctor Recognition (2014)


Dr. Mafong has 5 hospital affiliations:

  • Kaiser Permanente San Diego Medical Center 
  • UC San Diego Health System 


  • Spanish

> > > > Dr. Derek Mafong, MD

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Additional Information
Dr. Derek Dwayne Mafong MD is a male Internist, has 10 years of experience and practices in Internal Medicine and Endocrinology, Diabetes & Metabolism.
Where does Dr. Derek D. Mafong practice?
Dr. Derek Mafong has 2 office locations.
Dr. Derek Mafong practices Internal Medicine and Endocrinology, Diabetes & Metabolism near Bonita, CA.
Additional practice locations include: Oceanside, CA.
See Bonita Internists and Bonita Endocrinologists.