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. John Freitas:
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Specialties & Research
Dr. John Freitas, MD is board certified in Internal Medicine and Nuclear Medicine.
- He has special expertise in 3 areas:
- Adrenal Gland Diseases
- Thyroid Cancer
- Thyroid Diseases
Education & Awards
Dr. Freitas graduated from University of Michigan Medical School, Ann Arbor.
Dr. Freitas has 16 hospital affiliations:
- St. Mary Mercy Hospital
- ProMedica North Region-Herrick Campus
Accepted Insurance Plans
Dr. Freitas accepts these health insurances in at least one office:
- Blue Cross Blue Shield of Michigan - 3 plans
- Blue Cross Blue Shield of Illinois - 2 plans
- Humana - 2 plans
- Aetna - 2 plans