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. David Letzer:
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Specialties & Research
- He has special expertise in 1 area:
- Antiphospholipid Syndrome (APS)
Education & Awards
Dr. Letzer graduated from Michigan State University , East Lansing.
Dr. Letzer has 19 hospital affiliations:
- Wisconsin Heart Hospital
- Oconomowoc Memorial Hospital
Accepted Insurance Plans
Dr. Letzer accepts these health insurances in at least one office:
- Humana - 2 plans
- United Healthcare - 15 plans
- Medica Health Plans - 5 plans
- Cigna - 4 plans