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. Alison Leff:
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- Currently 4 of 4 stars
The overall average patient rating of Dr. Alison Leff is Excellent.
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Specialties & Research
Dr. Alison Leff, DO is board certified in Internal Medicine.
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Education & Awards
Dr. Leff graduated from Philadelphia College of Osteopathic Medicine. She has 1 awards.
Dr. Leff has 2 hospital affiliations:
- Griffin Hospital
- Norwalk Hospital
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- Additional Information
- Where does Dr. Alison J. Leff practice?
Dr. Alison Leff practices Internal Medicine near Norwalk, CT.
See Norwalk Internists.