Deren Mark Sinkowitz, MD
NPI 1619957750ActiveIndividual· Internal Medicine, Pulmonary Disease· Torrance, CA
Internal Medicine, Pulmonary Disease (MD) in Torrance, California, trained at New York Medical College (class of 1983). Their prescriptions cost Medicare Part D more than their services did: $632,854 for 1,552 claims, against $238,879 paid for services in 2024. Glaxosmithkline, LLC. was the largest of 8 companies reporting payments in 2025, $975.93 in all, mostly food and beverage.
Overview
| NPI | 1619957750 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jan 17, 2006 |
| Last updated in NPPES | May 10, 2013 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Pulmonary Disease Primary | 207RP1001X | 107553 | CA |
| Internal Medicine | 207R00000X | 107553 | CA |
| Internal Medicine, Critical Care Medicine | 207RC0200X | 107553 | 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 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 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 | 608 |
|---|---|
| Services billed | 2,104 across 33 procedure codes |
| Paid by Medicare | $238,879 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,552 · 2,466 30-day fills |
|---|---|
| Patients | 313 |
| Total drug cost | $632,854 |
| Generic share | 36% of claims |
Education and affiliations
| Medical school | New York Medical College |
|---|---|
| Graduation year | 1983 |
| Medicare specialty | Pulmonary Disease |
| Secondary specialties | Critical Care (Intensivists) |
| Telehealth | Offers telehealth |
Medical group
- Torrance Health Association IncRedondo Beach, CA · 299 clinicians
Hospital affiliation
- Torrance Memorial Medical CenterTorrance, CA
Industry payments (Open Payments)
- 2025$975.93 · 41 payments from 8 companies
- 2024$1,001 · 34 payments from 9 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Glaxosmithkline, LLC. | $289.31 | 13 |
| Astrazeneca Pharmaceuticals LP | $287.67 | 13 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $122.31 | 1 |
| Resmed Corp | $106.70 | 2 |
| Electromed, Inc. | $100.23 | 9 |
What the 2025 payments were for
- Food and Beverage$975.93 · 41 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 40 pulmonologists in Torrance · All pulmonologists in California