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).
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Specialties & Research
Dr. Joseph Greenberg, MD is board certified in Dermatology and Internal Medicine.
- He has special expertise in 4 areas:
- Acne Rosacea
- Psoriatic Arthritis
Education & Awards
Dr. Greenberg graduated from University of Minnesota, Twin Cities, Minneapolis.
Dr. Greenberg has 7 hospital affiliations:
- Sutter Memorial Hospital
- Marin General Hospital
Accepted Insurance Plans
Dr. Greenberg accepts these health insurances in at least one office:
- Aetna - 3 plans
- United Healthcare - 2 plans
- USA H & W Network - 1 plan
- Blue Shield of California - 88 plans
- Great-West Healthcare - 2 plans
- Unicare - 11 plans
- Anthem Blue Cross - 12 plans
- Cigna - 11 plans
- Humana - 6 plans