JULIA H HAYES MD
NPI 1447217229
Internal Medicine - Medical Oncology in Boston, MA
About Julia H Hayes Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JULIA H HAYES MD (NPI 1447217229) is an individual medical oncology provider in Boston, Massachusetts, licensed in Massachusetts (220877) and active in the NPI registry since April 2006. She is enrolled in Medicare PECOS, is affiliated with St Elizabeth's Medical Center, and is a graduate of Harvard Medical School (2001).
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Julia H Hayes Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Julia Hayes reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Boston, MA 02215
- Reassigned Medicare billing, Massachusetts enrollment
- Also billed through NPI 1346433257 (Massachusetts)
- 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.
Areas of Expertise CMS Part B claims
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
St Elizabeth's Medical Center
Acute Care Hospitals · Brighton, MABrigham And Women's Hospital
Acute Care Hospitals · Boston, MAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02115 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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 Julia Hayes's NPI number?
The NPI number for Julia Hayes is 1447217229. It was assigned to this individual provider in the NPPES registry on April 27, 2006.
Where is Julia Hayes located?
Julia Hayes practices at 44 Binney St D1230 Dana-Farber Cancer Institute, Boston, MA 02115. The listed phone number is (617) 632-2311.
What is Julia Hayes's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Medical Oncology, with taxonomy code 207RX0202X.
Is Julia Hayes enrolled in Medicare?
Yes. Julia Hayes is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Julia Hayes's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Julia Hayes reassigns Medicare benefits to Dana-Farber Cancer Institute, Inc. (Boston, MA). The 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 Julia Hayes's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Julia Hayes accept?
Health plans from Taro Health list Julia Hayes as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Julia Hayes affiliated with any hospitals?
According to CMS data, Julia Hayes is affiliated with St Elizabeth's Medical Center and Brigham And Women's Hospital.
When was this NPI record last updated?
The NPPES record for Julia Hayes was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months 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.
# Julia H Hayes, MD · NPI 1447217229
Medical Oncology physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since April 27, 2006.
## Identity
- **NPI:** 1447217229 (Entity type: Individual)
- **Enumerated:** April 27, 2006
- **Primary specialty:** Internal Medicine - Medical Oncology · taxonomy 207RX0202X
- **State license:** 220877 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 44 BINNEY ST, D1230 DANA-FARBER CANCER INSTITUTE, Boston, MA 02115-6084
- **Phone:** (617) 632-2311 · **Fax:** (617) 632-2165
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Dana-Farber Cancer Institute, Inc. (NPI 1851333686, Boston, MA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Harvard Medical School, class of 2001
## Record status
- **NPPES last updated:** July 13, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1447217229) · Data from the CMS NPPES public registry.