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

Dr. Robert B. Geller, MD

Individual provider Hematology & Oncology Physician · NPI 1861673121

Dr. Robert B. Geller, MD is a Hematology & Oncology Physician in Berlin, Wisconsin. Licensed in Wisconsin. Registered with an NPI since 2007.

Licensed in
WI
In the registry since
2007
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

225 Memorial Dr Ste 1600
Berlin, WI 54923-1243
Phone: (920) 361-6360
Fax: (920) 361-5324
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hematology & Oncology Physician (primary) Taxonomy 207RH0003X · Licence 43939 (WI)

Record details

NPI number1861673121
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedNovember 15, 2007
Last updated in NPPESMay 6, 2014

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