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. Daniel Greif, MD is board certified in Cardiovascular Disease.
- He has special expertise in 4 areas:
- Acute Coronary Syndrome (ACS)
- Heart Block
- High Blood Pressure (Hypertension)
- Unstable Angina
Education & Awards
Dr. Greif graduated from University of California at San Francisco.
Dr. Greif has 2 hospital affiliations:
- Mills-Peninsula Health Services
- Yale-New Haven Hospital