Ronald Tang, DO
NPI 1609022383ActiveIndividual· Internal Medicine, Hematology & Oncology· Pasadena, CA
Internal Medicine, Hematology & Oncology (DO) with Los Angeles Hematology-Oncology Medical Group, practicing in Pasadena, California. Their prescriptions cost Medicare Part D more than their services did: $6,584,478 for 1,259 claims, against $1,092,601 paid for services in 2024. Novartis Pharmaceuticals Corporation was the largest of 50 companies reporting payments in 2025, $7,064 in all, mostly food and beverage. Lists Ahmc Anaheim Regional Medical Center and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1609022383 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | Yes |
| NPI issued | Aug 13, 2008 |
| Last updated in NPPES | Jul 26, 2021 |
| Certified by provider | Jul 26, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | 20A11008 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Hematology/Oncology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 554 |
|---|---|
| Services billed | 44,341 across 73 procedure codes |
| Paid by Medicare | $1,092,601 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,259 · 1,968 30-day fills |
|---|---|
| Patients | 246 |
| Total drug cost | $6,584,478 |
| Generic share | 51% of claims |
Education and affiliations
| Graduation year | 2008 |
|---|---|
| Medicare specialty | Hematology/Oncology |
| Telehealth | Offers telehealth |
Medical group
- Los Angeles Hematology-Oncology Medical GroupVan Nuys, CA · 50 clinicians
Hospital affiliations
- Ahmc Anaheim Regional Medical CenterAnaheim, CA
- Cedars-Sinai Medical CenterLos Angeles, CA
- Garfield Medical CenterMonterey Park, CA
- Los Angeles Community HospitalLos Angeles, CA
- Pih Health Hospital-WhittierWhittier, CA
Other facilities
- Luminere Hospice, IncHospice · Canoga Park, CA
Industry payments (Open Payments)
- 2025$7,064 · 274 payments from 50 companies
- 2024$10,991 · 229 payments from 41 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novartis Pharmaceuticals Corporation | $1,106 | 19 |
| Janssen Biotech, Inc. | $859.16 | 27 |
| Merck Sharp & Dohme LLC | $405.89 | 18 |
| Astrazeneca Pharmaceuticals LP | $335.77 | 13 |
| Incyte Corporation | $302.36 | 12 |
What the 2025 payments were for
- Food and Beverage$5,997 · 260 payments
- Long term medical supply or device loan$833.30 · 10 payments
- Education$233.84 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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