DR. BIMALANGSHU RANJAN DEY MD
NPI 1679563845
Internal Medicine - Hematology & Oncology in Boston, MA
About Dr. Bimalangshu Ranjan Dey Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. BIMALANGSHU RANJAN DEY MD (NPI 1679563845) is an individual hematology & oncology provider in Boston, Massachusetts, licensed in Massachusetts (77992) and active in the NPI registry since October 2005. He is enrolled in Medicare PECOS, is affiliated with Beth Israel Deaconess Medical Center, and maintains a secondary practice location in Exeter.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Other Identifiers 3
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
Dr. Bimalangshu Ranjan Dey 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 Bimalangshu Dey reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Boston, MA 02215
- Reassigned Medicare billing, Massachusetts enrollment
- Also billed through NPI 1497151773 (Massachusetts)
- 1,006 clinicians in this Medicare group
Boston, MA 02215
- Reassigned Medicare billing, Massachusetts enrollment
- 2,579 clinicians in this Medicare group
Boston, MA 02215
- Reassigned Medicare billing, Massachusetts enrollment
- Also billed through NPI 1346433257 (Massachusetts)
- 1,026 clinicians in this Medicare group
Boston, MA 02114
- Reassigned Medicare billing, Massachusetts enrollment
- 6,234 clinicians in this Medicare group
Boston, MA 02114
- Reassigned Medicare billing, Massachusetts and New Hampshire enrollments
- 6,360 clinicians in this Medicare group
Exeter, NH 03833
- Reassigned Medicare billing, New Hampshire enrollment
- 395 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 6
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 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Beth Israel Deaconess Medical Center
Acute Care Hospitals · Boston, MAElliot Hospital
Acute Care Hospitals · Manchester, NHExeter Hospital Inc
Acute Care Hospitals · Exeter, NHPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02215 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 02215
BOSTON, MA 02215
BOSTON, MA 02215
BOSTON, MA 02215
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 Bimalangshu Dey's NPI number?
The NPI number for Bimalangshu Dey is 1679563845. It was assigned to this individual provider in the NPPES registry on October 27, 2005.
Where is Bimalangshu Dey located?
Bimalangshu Dey practices at 330 Brookline Ave, Boston, MA 02215. The listed phone number is (617) 667-9920.
What is Bimalangshu Dey's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.
Is Bimalangshu Dey enrolled in Medicare?
Yes. Bimalangshu Dey 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 Bimalangshu Dey's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Bimalangshu Dey reassigns Medicare benefits to 6 organizations: Associated Physicians Of Harvard Medical Faculty Physicians At Beth Is (Boston, MA), Harvard Medical Faculty Phys At Beth Israel Deaconess Med Ctr Inc (Boston, MA), Dana-Farber Cancer Institute, Inc. (Boston, MA), The General Hospital Corporation (Boston, MA), Massachusetts General Physicians Organization Inc (Boston, 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 Bimalangshu Dey's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Bimalangshu Dey accept?
Health plans from Ambetter from NH Healthy Families, Anthem Blue Cross and Blue Shield, Harvard Pilgrim Health Care, Taro Health and WellSense Health Plan list Bimalangshu Dey 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 Bimalangshu Dey affiliated with any hospitals?
According to CMS data, Bimalangshu Dey is affiliated with Beth Israel Deaconess Medical Center, Elliot Hospital and Exeter Hospital Inc.
When was this NPI record last updated?
The NPPES record for Bimalangshu Dey 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.
# Dr. Bimalangshu Ranjan Dey, MD · NPI 1679563845
Hematology & Oncology physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since October 27, 2005.
## Identity
- **NPI:** 1679563845 (Entity type: Individual)
- **Enumerated:** October 27, 2005
- **Primary specialty:** Internal Medicine - Hematology & Oncology · taxonomy 207RH0003X
- **State license:** 77992 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 330 BROOKLINE AVE, Boston, MA 02215-5491
- **Phone:** (617) 667-9920 · **Fax:** (617) 667-9922
## 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:** 6 organizations under Medicare reassignment (form CMS-855R): Associated Physicians Of Harvard Medical Faculty Physicians At Beth Is (NPI 1861216038, Boston, MA); Harvard Medical Faculty Phys At Beth Israel Deaconess Med Ctr Inc (NPI 1194765438, Boston, MA); Dana-Farber Cancer Institute, Inc. (NPI 1851333686, Boston, MA); The General Hospital Corporation (NPI 1023049236, Boston, MA); Massachusetts General Physicians Organization Inc (NPI 1801874573, Boston, MA); and 1 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1985
## Record status
- **NPPES last updated:** July 13, 2026
- **Other identifiers:** Medicaid 3122352 (MA); Other 730443 (MA); Other J30424 (MA)
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Source: [NPI Profile](https://npiprofile.com/npi/1679563845) · Data from the CMS NPPES public registry.