Chainarong Limvarapuss, MD
NPI 1053341784ActiveIndividual· Internal Medicine, Hematology & Oncology· Vallejo, CA
Internal Medicine, Hematology & Oncology (MD) with Solano Hematology - Oncology, practicing in Vallejo, California. Their prescriptions cost Medicare Part D more than their services did: $6,154,594 for 3,492 claims, against $3,048,857 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 52 companies reporting payments in 2025, $4,852 in all, mostly food and beverage. Lists Sutter Medical Center, Sacramento and 1 other hospital as hospital affiliations.
Overview
| NPI | 1053341784 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 5, 2006 |
| Last updated in NPPES | Mar 4, 2011 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | A80619 | 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 | 370 |
|---|---|
| Services billed | 179,200 across 164 procedure codes |
| Paid by Medicare | $3,048,857 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,492 · 6,016 30-day fills |
|---|---|
| Patients | 299 |
| Total drug cost | $6,154,594 |
| Generic share | 77% of claims |
Education and affiliations
| Graduation year | 1989 |
|---|---|
| Medicare specialty | Hematology/Oncology |
| Secondary specialties | Hematology, Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Solano Hematology - OncologyVallejo, CA · 3 clinicians
Hospital affiliations
- Sutter Medical Center, SacramentoSacramento, CA
- Sutter Solano Medical CenterVallejo, CA
Other facilities
- Sutter Care at HomeHome health agency · Concord, CA
Industry payments (Open Payments)
- 2025$4,852 · 206 payments from 52 companies
- 2024$5,772 · 196 payments from 46 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $475.05 | 22 |
| Novartis Pharmaceuticals Corporation | $359.81 | 16 |
| Karyopharm Therapeutics Inc. | $292.35 | 16 |
| Celgene Corporation | $264.30 | 14 |
| Daiichi Sankyo Inc. | $262.72 | 13 |
What the 2025 payments were for
- Food and Beverage$4,796 · 204 payments
- Education$55.82 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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