DR. RALPH WEISSLEDER MD PHD
NPI 1417948498
Radiology - Diagnostic Radiology in Boston, MA
About Dr. Ralph Weissleder Md Phd NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. RALPH WEISSLEDER MD PHD (NPI 1417948498) is an individual diagnostic radiology provider in Boston, Massachusetts, licensed in Massachusetts (77481) and active in the NPI registry since October 2005. He is enrolled in Medicare PECOS, is affiliated with Massachusetts General Hospital, and is a graduate of Other (1985).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 5
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
Dr. Ralph Weissleder Md Phd 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 Reassignments
2Medicare enrollment records show Ralph Weissleder reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Boston, MA 02114
- Reassigned Medicare billing, Massachusetts enrollment
- 6,360 clinicians in this Medicare group
Boston, MA 02114
- Reassigned Medicare billing, Massachusetts enrollment
- 6,234 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 2
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.
Massachusetts General Hospital
Acute Care Hospitals · Boston, MAMassachusetts Eye And Ear Infirmary -
Acute Care Hospitals · Boston, MAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02114 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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 02114
BOSTON, MA 02114
BOSTON, MA 02114
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 Ralph Weissleder's NPI number?
The NPI number for Ralph Weissleder is 1417948498. It was assigned to this individual provider in the NPPES registry on October 31, 2005.
Where is Ralph Weissleder located?
Ralph Weissleder practices at 55 Fruit St Ell 2, Boston, MA 02114. The listed phone number is (617) 726-8396.
What is Ralph Weissleder's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.
Is Ralph Weissleder enrolled in Medicare?
Yes. Ralph Weissleder 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 organizations bill Medicare for Ralph Weissleder's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ralph Weissleder reassigns Medicare benefits to 2 organizations: Massachusetts General Physicians Organization Inc (Boston, MA) and The General Hospital Corporation (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 Ralph Weissleder's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Ralph Weissleder affiliated with any hospitals?
According to CMS data, Ralph Weissleder is affiliated with Massachusetts General Hospital and Massachusetts Eye And Ear Infirmary -.
When was this NPI record last updated?
The NPPES record for Ralph Weissleder was last updated on August 9, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.
# Dr. Ralph Weissleder, MD PHD · NPI 1417948498
Diagnostic Radiology physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since October 31, 2005.
## Identity
- **NPI:** 1417948498 (Entity type: Individual)
- **Enumerated:** October 31, 2005
- **Primary specialty:** Radiology - Diagnostic Radiology · taxonomy 2085R0202X
- **State license:** 77481 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 55 FRUIT ST, ELL 2, Boston, MA 02114-2696
- **Phone:** (617) 726-8396 · **Fax:** (617) 726-4891
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Massachusetts General Physicians Organization Inc (NPI 1801874573, Boston, MA); The General Hospital Corporation (NPI 1023049236, Boston, MA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1985
## Record status
- **NPPES last updated:** August 9, 2012
- **Other identifiers:** Medicare ID-Type Unspecified J30073 (MA); Other J30073 (MA); Medicaid 3112462 (MA); and 2 more
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Source: [NPI Profile](https://npiprofile.com/npi/1417948498) · Data from the CMS NPPES public registry.