JAMES C BASS III MD
NPI 1780673616
Radiology - Vascular & Interventional Radiology in Boston, MA
About James C Bass Iii Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JAMES C BASS III MD (NPI 1780673616) is an individual vascular & interventional radiology provider in Boston, Massachusetts, licensed in Massachusetts (203290) and active in the NPI registry since October 2005. He is enrolled in Medicare PECOS, is affiliated with North Shore Medical Center -, and is a graduate of Duke University School Of Medicine (1990).
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 12
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
James C Bass Iii 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 Reassignments
6Medicare enrollment records show James Bass reassigns Medicare billing to 6 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
Boston, MA 02109
- Reassigned Medicare billing, Massachusetts, New Hampshire and Rhode Island enrollments
- Also billed through NPI 1548638265 (Rhode Island)
- 350 clinicians in this Medicare group
Melrose, MA 02176
- Reassigned Medicare billing, Massachusetts enrollment
- 75 clinicians in this Medicare group
Salem, MA 01970
- Reassigned Medicare billing, Massachusetts enrollment
- 994 clinicians in this Medicare group
Lowell, MA 01854
- Reassigned Medicare billing, Massachusetts enrollment
- 93 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 18
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 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
North Shore Medical Center -
Acute Care Hospitals · Salem, MAMassachusetts General Hospital
Acute Care Hospitals · Boston, MANewton-Wellesley Hospital
Acute Care Hospitals · Newton, MABrigham And Women's Hospital
Acute Care Hospitals · Boston, MAWentworth-Douglass Hospital
Acute Care Hospitals · Dover, NHPhysician 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 James Bass's NPI number?
The NPI number for James Bass is 1780673616. It was assigned to this individual provider in the NPPES registry on October 13, 2005.
Where is James Bass located?
James Bass practices at 55 Fruit St, Boston, MA 02114. The listed phone number is (978) 354-4432.
What is James Bass's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Vascular & Interventional Radiology, with taxonomy code 2085R0204X.
Is James Bass enrolled in Medicare?
Yes. James Bass 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 James Bass's services?
According to the CMS Revalidation Reassignment List (October 2026 release), James Bass reassigns Medicare benefits to 6 organizations: Massachusetts General Physicians Organization Inc (Boston, MA), The General Hospital Corporation (Boston, MA), Mass General Brigham Community Physicians Inc. (Boston, MA), Mw Radiology-Cra LLC (Melrose, MA), Mass General Brigham Medical Group Northern Massachusetts Inc (Salem, MA) and 1 more organization, listed in the Medicare section above. 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 James Bass's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does James Bass accept?
Health plans from WellSense Health Plan list James Bass 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 James Bass affiliated with any hospitals?
According to CMS data, James Bass is affiliated with North Shore Medical Center -, Massachusetts General Hospital, Newton-Wellesley Hospital, Brigham And Women's Hospital and Wentworth-Douglass Hospital.
When was this NPI record last updated?
The NPPES record for James Bass was last updated on October 6, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.