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Robert Schlossman, MD
NPI 1326001215 · Medical Oncology Physician · Boston, MA
Robert Schlossman, MD is a Medical Oncology Physician provider in Boston, MA (NPI 1326001215).
Provider details
- NPI number
- 1326001215
- Entity type
- Individual
- Primary specialty
- Medical Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 75562 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(91/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 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
450 Brookline Ave
M229
Boston, MA 02215-5418
Phone: (613) 632-5126
Fax: (617) 632-6624
Street-level locationGet directions
Mailing address
36 Lansing Rd
West Newton, MA 02465
Registry dates
- Enumerated
- 2006-04-11
- Last updated
- 2012-01-13
Frequently asked questions
- What is Robert Schlossman's NPI number?
- Robert Schlossman's National Provider Identifier (NPI) is 1326001215, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Schlossman's specialty?
- Robert Schlossman is listed in the NPPES registry with a primary specialty of Medical Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Robert Schlossman located?
- Robert Schlossman's practice location on file with NPPES is 450 Brookline Ave, Boston, MA 02215-5418.
- What is Robert Schlossman's phone number?
- The practice phone number listed in the NPPES registry for Robert Schlossman is (613) 632-5126.
- Is Robert Schlossman's NPI active?
- Yes — Robert Schlossman's NPI (1326001215) is active in the NPPES registry as of the last update on 2012-01-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.