Twinkle Chandak
NPI 1790003929ActiveIndividual· Internal Medicine, Critical Care Medicine· Duarte, CA
Internal Medicine, Critical Care Medicine with Faculty Physicians and Surgeons of Llusm and 1 other group, practicing in Duarte, California. Their prescriptions cost Medicare Part D more than their services did: $662,529 for 1,011 claims, against $107,294 paid for services in 2024. Genzyme Corporation was the largest of 6 companies reporting payments in 2025, $570.34 in all, mostly food and beverage. Lists Loma Linda University Medical Center as a hospital affiliation.
Overview
| NPI | 1790003929 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | Yes |
| NPI issued | May 12, 2010 |
| Last updated in NPPES | Sep 3, 2024 |
| Certified by provider | Sep 3, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Critical Care Medicine Primary | 207RC0200X | C154754 | CA |
| Internal Medicine, Critical Care Medicine | 207RC0200X | 243596 | MA |
| Internal Medicine, Pulmonary Disease | 207RP1001X | C154754 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Pulmonary Disease (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 377 |
|---|---|
| Services billed | 1,259 across 52 procedure codes |
| Paid by Medicare | $107,294 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,011 · 1,326 30-day fills |
|---|---|
| Patients | 187 |
| Total drug cost | $662,529 |
| Generic share | 53% of claims |
Education and affiliations
| Graduation year | 2003 |
|---|---|
| Medicare specialty | Pulmonary Disease |
| Telehealth | Offers telehealth |
Medical groups
- Faculty Physicians and Surgeons of LlusmLoma Linda, CA · 1,315 clinicians
- Sac Health SystemSan Bernardino, CA · 227 clinicians
Hospital affiliation
- Loma Linda University Medical CenterLoma Linda, CA
Industry payments (Open Payments)
- 2025$570.34 · 8 payments from 6 companies
- 2024$2,411 · 8 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Genzyme Corporation | $143.36 | 2 |
| Stryker Corporation | $136.19 | 1 |
| Merck Sharp & Dohme LLC | $135.74 | 2 |
| Glaxosmithkline, LLC. | $121.82 | 1 |
| Insmed, Inc. | $17.38 | 1 |
What the 2025 payments were for
- Food and Beverage$542.11 · 6 payments
- Education$28.23 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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