James Xu, M.D.
NPI 1104003342 · Hematology & Oncology Physician · Rockville, MD
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
James Xu, M.D. is a Hematology & Oncology Physician provider in Rockville, MD (NPI 1104003342).
Provider details
- NPI number
- 1104003342
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 252738-1 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
18 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
18,466 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 3,590 | $8 |
| Infusion Into a Vein for Therapy, Prevention, Or Diagnosis, Additional Sequential Infusion, 1 Hour Or Less96367 | 3,535 | $34 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 1,432 | $19 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 1,399 | $9 |
| Unclassified DrugsJ3490 | 1,187 | $1 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 25 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Apixabanbrand: Eliquis | 192 | 59 |
| Warfarin Sodium | 142 | 14 |
| Ondansetronbrand: Ondansetron Odt | 71 | 32 |
| Prednisone | 48 | — |
| Enoxaparin Sodium | 41 | 11 |
| Abiraterone Acetate | 40 | — |
| Furosemide | 37 | 17 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,098 across 83 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-01-30
- Last updated
- 2016-12-29
Frequently asked questions
- What is James Xu's NPI number?
- James Xu's National Provider Identifier (NPI) is 1104003342, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Xu's specialty?
- James Xu is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is James Xu located?
- James Xu's practice location on file with NPPES is 6000 Executive Blvd, Rockville, MD 20852-3803.
- What is James Xu's phone number?
- The practice phone number listed in the NPPES registry for James Xu is (240) 618-0275.
- Does James Xu accept Medicare?
- James Xu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is James Xu's NPI active?
- Yes — James Xu's NPI (1104003342) is active in the NPPES registry as of the last update on 2016-12-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.