XIAO XIAO WEI MD
NPI 1255630026
Internal Medicine - Medical Oncology in Boston, MA
About Xiao Xiao Wei Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
XIAO XIAO WEI MD (NPI 1255630026) is an individual medical oncology provider in Boston, Massachusetts, licensed in Massachusetts (272999) and active in the NPI registry since March 2011. She is enrolled in Medicare PECOS, is affiliated with Cooley Dickinson Hospital Inc,the, and maintains a secondary practice location in New York.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
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
Xiao Xiao Wei 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 Xiao Wei 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 9
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 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Cooley Dickinson Hospital Inc,the
Acute Care Hospitals · Northampton, MAMassachusetts General Hospital
Acute Care Hospitals · Boston, 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 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.
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.
Referred Medical Equipment & Supplies CMS DME claims 3
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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
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 Xiao Wei's NPI number?
The NPI number for Xiao Wei is 1255630026. It was assigned to this individual provider in the NPPES registry on March 19, 2011.
Where is Xiao Wei located?
Xiao Wei practices at 450 Brookline Ave, Boston, MA 02215. The listed phone number is (617) 632-3000.
What is Xiao Wei's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Medical Oncology, with taxonomy code 207RX0202X.
Is Xiao Wei enrolled in Medicare?
Yes. Xiao Wei 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 Xiao Wei's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Xiao Wei 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 Xiao Wei's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Xiao Wei accept?
Health plans from Anthem Blue Cross and Blue Shield and Taro Health list Xiao Wei 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 Xiao Wei affiliated with any hospitals?
According to CMS data, Xiao Wei is affiliated with Cooley Dickinson Hospital Inc,the, Massachusetts General Hospital, Brigham And Women's Hospital and Wentworth-Douglass Hospital.
When was this NPI record last updated?
The NPPES record for Xiao Wei was last updated on March 17, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.
# Xiao Xiao Wei, MD · NPI 1255630026
Medical Oncology physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since March 19, 2011.
## Identity
- **NPI:** 1255630026 (Entity type: Individual)
- **Enumerated:** March 19, 2011
- **Primary specialty:** Internal Medicine - Medical Oncology · taxonomy 207RX0202X
- **State license:** 272999 (Massachusetts)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 450 BROOKLINE AVE, Boston, MA 02215-5418
- **Phone:** (617) 632-3000
## 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:** State University Of New York At Buffalo School Of Medicine, class of 2011
## Record status
- **NPPES last updated:** March 17, 2018
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Source: [NPI Profile](https://npiprofile.com/npi/1255630026) · Data from the CMS NPPES public registry.