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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- Currently 2.5 of 4 stars
The overall average patient rating of Dr. William Klein is Good.
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Specialties & Research
Dr. William Klein, FAAD, MD is board certified in Internal Medicine and Pulmonary Disease.
- He has special expertise in 7 areas:
- Acne Rosacea
- Hair Diseases
- Skin Cancer
Education & Awards
Dr. Klein graduated from State University of New York Downstate, Brooklyn.
Dr. Klein has 15 hospital affiliations:
- Long Beach Memorial Medical Center
- Fountain Valley Regional Hospital & Medical Center
Accepted Insurance Plans
Dr. Klein accepts these health insurances in at least one office:
- United Healthcare - 16 plans
- Blue Shield of California - 93 plans
- Unicare - 2 plans
- Anthem Blue Cross - 2 plans
- Evercare - 2 plans
- Cigna - 3 plans
- Humana - 3 plans
- CaIOPTIMA - 3 plans
- Aetna - 3 plans
- Oxford Health Plans - 3 plans