MARC SCHWARTZ MD, PHD
NPI 1518351071
Pediatrics - Pediatric Hematology-Oncology in Boston, MA
About Marc Schwartz Md, Phd NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARC SCHWARTZ MD, PHD (NPI 1518351071) is an individual pediatric hematology-oncology provider in Boston, Massachusetts, licensed in Massachusetts (281254) and active in the NPI registry since March 2015. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Marc Schwartz Md, Phd is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Marc Schwartz reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Boston, MA 02115
- Reassigned Medicare billing, Massachusetts enrollment
- 1,358 clinicians in this Medicare group
Boston, MA 02215
- Reassigned Medicare billing, Massachusetts enrollment
- 1,026 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
BOSTON, MA 02115
BOSTON, MA 02115
BOSTON, MA 02115
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Marc Schwartz's NPI number?
The NPI number for Marc Schwartz is 1518351071. It was assigned to this individual provider in the NPPES registry on March 23, 2015.
Where is Marc Schwartz located?
Marc Schwartz practices at 300 Longwood Ave Bch, Hunnewell Bldg, Pavilion 129, Housestaff Lounge, Boston, MA 02115. The listed phone number is (617) 355-7793.
What is Marc Schwartz's specialty?
The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Hematology-Oncology, with taxonomy code 2080P0207X.
Is Marc Schwartz enrolled in Medicare?
Yes. Marc Schwartz is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Marc Schwartz's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Marc Schwartz reassigns Medicare benefits to 2 organizations: Children's Hospital Pediatric Associates, Inc (Boston, MA) and Dana-Farber Cancer Institute, Inc. (Boston, MA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Marc Schwartz's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Marc Schwartz was last updated on June 8, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Marc Schwartz, MD, PHD · NPI 1518351071
Pediatric Hematology-Oncology physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since March 23, 2015.
## Identity
- **NPI:** 1518351071 (Entity type: Individual)
- **Enumerated:** March 23, 2015
- **Primary specialty:** Pediatrics - Pediatric Hematology-Oncology · taxonomy 2080P0207X
- **State license:** 281254 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 300 LONGWOOD AVE, BCH, HUNNEWELL BLDG, PAVILION 129, HOUSESTAFF LOUNGE, Boston, MA 02115-5724
- **Phone:** (617) 355-7793
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Children's Hospital Pediatric Associates, Inc (NPI 1457306664, Boston, MA); Dana-Farber Cancer Institute, Inc. (NPI 1851333686, Boston, MA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** June 8, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1518351071) · Data from the CMS NPPES public registry.