Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. William M. McCormack, MD

Individual provider Infectious Disease Physician · NPI 1366436008

Dr. William M. McCormack, MD is an Infectious Disease Physician in Brooklyn, New York. Licensed in New York. Registered with an NPI since 2005.

Licensed in
NY
In the registry since
2005
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

450 Clarkson Ave Ste A
Brooklyn, NY 11203-2056
Phone: (718) 270-1432
Fax: (718) 270-4123
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Infectious Disease Physician (primary) Taxonomy 207RI0200X · Licence 092245-1 (NY)

Record details

NPI number1366436008
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 8, 2005
Last updated in NPPESJuly 13, 2026

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