Chau Tran, D.O.
NPI 1083813422 · Hematology & Oncology Physician · Upland, CA
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Chau Tran, D.O. is a Hematology & Oncology Physician provider in Upland, CA (NPI 1083813422).
Provider details
- NPI number
- 1083813422
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Female
- Sole proprietor
- No
- License
- 20A8105 (CA)
Specialties & taxonomies
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
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
679 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 181 | $156 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 110 | $112 |
| Injection of Additional New Drug Or Substance Into Vein96375 | 96 | $17 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 65 | $186 |
| Administration of Chemotherapy Into Vein, 1 Hour Or Less96413 | 55 | $147 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Anastrozole | 89 | 34 |
| Prednisone | 37 | — |
| Ondansetron Hcl | 25 | 13 |
| Abiraterone Acetate | 21 | — |
| Prochlorperazine Maleate | 21 | 11 |
| Bicalutamide | 18 | — |
| Apixabanbrand: Eliquis | 17 | — |
| Leuprolide Acetate |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$38 across 2 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
Additional practice locations (1)
- 1250 S Sunset Ave Ste 303West Covina, CA 91790-3912Phone: (626) 856-5858Fax: (626) 856-5853
Registry dates
- Enumerated
- 2007-07-16
- Last updated
- 2023-09-22
- Certified
- 2023-09-22
Frequently asked questions
- What is Chau Tran's NPI number?
- Chau Tran's National Provider Identifier (NPI) is 1083813422, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Chau Tran's specialty?
- Chau Tran is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Chau Tran located?
- Chau Tran's practice location on file with NPPES is 1100 San Bernardino Rd Ste 1100, Upland, CA 91786-4952.
- What is Chau Tran's phone number?
- The practice phone number listed in the NPPES registry for Chau Tran is (909) 949-2242.
- Does Chau Tran accept Medicare?
- Chau Tran is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Chau Tran's NPI active?
- Yes — Chau Tran's NPI (1083813422) is active in the NPPES registry as of the last update on 2023-09-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.