Quick answers
- Which hospitals does James X. Xu work at?
- Medicare's official clinician data lists James X. Xu at 4 hospitals: Adventist Healthcare Shady Grove Medical Center, Holy Cross Germantown Hospital, Holy Cross Hospital and Suburban Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does James X. Xu see patients?
- Medicare's clinician data lists 1 practice location in Rockville, MD. Call before your visit to confirm the address.
- What is James X. Xu's specialty?
- Medicare lists Hematology/Oncology as the primary specialty, and also Hematology, Internal Medicine and Medical Oncology.
- Does James X. Xu accept Medicare assignment?
- Yes. Medicare's clinician data says James X. 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 James X. Xu offer telehealth?
- Medicare's clinician data says James X. Xu offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for James X. Xu?
- (240) 618-0275, as listed in official Medicare / NPI Registry data.
- What is James X. Xu's NPI number?
- 1104003342. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where James X. Xu works
Medicare's Facility Affiliation Data lists James X. Xu at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Adventist Healthcare Shady Grove Medical CenterRockville, MD · Acute Care Hospital · CCN 210057
- Holy Cross Germantown HospitalGermantown, MD · Acute Care Hospital · CCN 210065
- Holy Cross HospitalSilver Spring, MD · Acute Care Hospital · CCN 210004
- Suburban HospitalBethesda, MD · Acute Care Hospital · CCN 210022
Practice locations
Addresses where James X. Xu is enrolled with Medicare (CMS data updated 2026-10-02).
- 6000 Executive Blvd, Suite 501Rockville, MD 20852 (240) 618‑0275
Group practices
Medicare enrollment lists James X. Xu as a member of this group (CMS data updated 2026-10-02).
- Potomac Oncology and Hematology, LLC3 clinicians in the group
Specialties
- Hematology/Oncologyprimary
- Hematologyalso
- Internal Medicinealso
- Medical Oncologyalso
Other hematologist-oncologists in Rockville
Clinicians with the same Medicare primary specialty in Rockville, MD — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Minnesota Medical School |
| Graduation year | 2006 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1104003342 |
| Corrections | Report 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians