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

Charles Rosenbaum MD PC

Organization Medical Oncology Physician · NPI 1538285564

Charles Rosenbaum MD PC is a Medical Oncology Physician in Marlborough, Massachusetts. Licensed in Massachusetts. Registered with an NPI since 2007.

Licensed in
MA
In the registry since
2007
What do these letters mean?
PC — Professional corporation
A form of business registration, not a clinical qualification.

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Practice location Address checks out

65 Fremont St
Marlborough, MA 01752-1271
Phone: (508) 481-4213
Fax: (508) 481-7841
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Medical Oncology Physician (primary) Taxonomy 207RX0202X · Licence 36848 (MA)

Record details

NPI number1538285564
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Charles Rosenbaum — Owner · (508) 481-4213
NPI enumeratedMarch 21, 2007
Last updated in NPPESFebruary 19, 2008
Mailing address65 Fremont St, Marlborough, MA 01752-1271

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