Marc Schwartz, MD, PHD
NPI 1518351071 · Pediatric Hematology & Oncology Physician · Boston, MA
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marc Schwartz, MD, PHD is a Pediatric Hematology & Oncology Physician provider in Boston, MA (NPI 1518351071).
Provider details
- NPI number
- 1518351071
- Entity type
- Individual
- Primary specialty
- Pediatric Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD, PHD
- Sex
- Male
- Sole proprietor
- No
- License
- 281254 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
11 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$22 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2015-03-23
- Last updated
- 2021-06-08
- Certified
- 2021-06-08
Frequently asked questions
- What is Marc Schwartz's NPI number?
- Marc Schwartz's National Provider Identifier (NPI) is 1518351071, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marc Schwartz's specialty?
- Marc Schwartz is listed in the NPPES registry with a primary specialty of Pediatric Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Marc Schwartz located?
- Marc Schwartz's practice location on file with NPPES is 300 Longwood Ave, Boston, MA 02115-5724.
- What is Marc Schwartz's phone number?
- The practice phone number listed in the NPPES registry for Marc Schwartz is (617) 355-7793.
- Does Marc Schwartz accept Medicare?
- Marc Schwartz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marc Schwartz's NPI active?
- Yes — Marc Schwartz's NPI (1518351071) is active in the NPPES registry as of the last update on 2021-06-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.