Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Gregory B Buck, MD

Individual provider Internal Medicine Physician · NPI 1417989641

Gregory B Buck, MD is an Internal Medicine Physician in Wauwatosa, Wisconsin. Licensed in Wisconsin. Registered with an NPI since 2006.

Licensed in
WI
In the registry since
2006
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

3289 N Mayfair Rd
Wauwatosa, WI 53222-3203
Phone: (414) 771-7900
Fax: (414) 607-6336
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Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 25211 (WI)

Record details

NPI number1417989641
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 7, 2006
Last updated in NPPESSeptember 23, 2010
Mailing address3003 W Good Hope Road, Milwaukee, WI 53209

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