OrganizationActive
Charles Rosenbaum MD PC
NPI 1538285564 · Medical Oncology Physician · Marlborough, MA
Provider details
- NPI number
- 1538285564
- Entity type
- Organization
- Primary specialty
- Medical Oncology PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Charles Rosenbaum, Owner(508) 481-4213
- License
- 36848 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(89/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
65 Fremont St
Marlborough, MA 01752-1271
Phone: (508) 481-4213
Fax: (508) 481-7841
Street-level locationGet directions
Mailing address
65 Fremont St
Marlborough, MA 01752-1271
Registry dates
- Enumerated
- 2007-03-21
- Last updated
- 2008-02-19
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.