Cathy Rosenfield, MD
NPI 1700997426 · Pediatric Hematology & Oncology Physician · Boston, MA
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Cathy Rosenfield, MD is a Pediatric Hematology & Oncology Physician provider in Boston, MA (NPI 1700997426).
Provider details
- NPI number
- 1700997426
- Entity type
- Individual
- Primary specialty
- Pediatric Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 58447 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
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
Mailing address
Registry dates
- Enumerated
- 2006-08-31
- Last updated
- 2014-03-04
Frequently asked questions
- What is Cathy Rosenfield's NPI number?
- Cathy Rosenfield's National Provider Identifier (NPI) is 1700997426, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Cathy Rosenfield's specialty?
- Cathy Rosenfield is listed in the NPPES registry with a primary specialty of Pediatric Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Cathy Rosenfield located?
- Cathy Rosenfield's practice location on file with NPPES is 800 Washington St, Boston, MA 02111-1552.
- What is Cathy Rosenfield's phone number?
- The practice phone number listed in the NPPES registry for Cathy Rosenfield is (617) 636-5000.
- Does Cathy Rosenfield accept Medicare?
- Cathy Rosenfield is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Cathy Rosenfield's NPI active?
- Yes — Cathy Rosenfield's NPI (1700997426) is active in the NPPES registry as of the last update on 2014-03-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.