Katherine Warren, M.D.
NPI 1619279718 · Pediatric Hematology & Oncology Physician · Boston, MA
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Katherine Warren, M.D. is a Pediatric Hematology & Oncology Physician provider in Boston, MA (NPI 1619279718).
Provider details
- NPI number
- 1619279718
- Entity type
- Individual
- Primary specialty
- Pediatric Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 280016 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
15 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Additional practice locations (1)
- 450 Brookline AveBoston, MA 02215Phone: (617) 632-3000Fax: (617) 632-3730
Registry dates
- Enumerated
- 2010-11-22
- Last updated
- 2019-11-05
Frequently asked questions
- What is Katherine Warren's NPI number?
- Katherine Warren's National Provider Identifier (NPI) is 1619279718, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Katherine Warren's specialty?
- Katherine Warren is listed in the NPPES registry with a primary specialty of Pediatric Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Katherine Warren located?
- Katherine Warren's practice location on file with NPPES is 450 Brookline Ave, Boston, MA 02215.
- What is Katherine Warren's phone number?
- The practice phone number listed in the NPPES registry for Katherine Warren is (617) 632-3000.
- Does Katherine Warren accept Medicare?
- Katherine Warren is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Katherine Warren's NPI active?
- Yes — Katherine Warren's NPI (1619279718) is active in the NPPES registry as of the last update on 2019-11-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.