Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Hematology/Oncology

Xiaocao Xu, MD

Works at hospitals in Marlborough, MA · Southbridge, MA · Leominster, MA … · Massachusetts

Summary

Xiaocao Xu, MD (Hematology/Oncology) is listed by Medicare at 4 hospitals in Marlborough, MA, Southbridge, MA and Leominster, MA and other places. NPI 1457813834. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Xiaocao Xu, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

Hematology/OncologyPrimary specialty
YesAccepts Medicare assignment
YesOffers telehealth
15Years since medical school (graduated 2011)
FemaleGender (as listed)
UMass Memorial Medical Group IncGroup practice

Quick answers

Which hospitals does Xiaocao Xu work at?
Medicare's official clinician data lists Xiaocao Xu at 4 hospitals: Marlborough Hospital, UMass Memorial Health - Harrington Hospital, UMass Memorial Healthalliance Hospitals and UMass Memorial Medical Center/University Campus. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Xiaocao Xu see patients?
Medicare's clinician data lists 2 practice locations, including Marlborough, MA and Worcester, MA. Call before your visit to confirm the address.
What is Xiaocao Xu's specialty?
Medicare lists Hematology/Oncology as the primary specialty.
Does Xiaocao Xu accept Medicare assignment?
Yes. Medicare's clinician data says Xiaocao Xu accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
Does Xiaocao Xu offer telehealth?
Medicare's clinician data says Xiaocao Xu offers telehealth services. Ask the office which visits can be done by video or phone.
What is the phone number for Xiaocao Xu?
(508) 486-5521, as listed in official Medicare / NPI Registry data.
What is Xiaocao Xu's NPI number?
1457813834. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Xiaocao Xu works

Medicare's Facility Affiliation Data lists Xiaocao Xu at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where Xiaocao Xu is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Xiaocao Xu as a member of this group (CMS data updated 2026-10-02).

  • UMass Memorial Medical Group Inc2,516 clinicians in the group

Specialties

Find other Hematology/Oncology doctors in Massachusetts →

Other hematologist-oncologists in Massachusetts

Clinicians with the same Medicare primary specialty in Massachusetts — not a recommendation.

All hematologist-oncologists in Massachusetts →

Clinician information

CredentialMD
Graduation year2011
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1457813834
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians