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

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.

See every abbreviation used in this directory →

Practice location Address checks out

225 Memorial Dr Ste 1600
Berlin, WI 54923-1243
Phone: (920) 361-6360
Fax: (920) 361-5324
Show map & directions

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
Mailing address225 Memorial Dr, Suite 1600, Berlin, WI 54923-1243

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