Douglas Kanter Marks, M.D.
NPI 1083980189ActiveIndividual· Internal Medicine, Hematology & Oncology· New York, NY
Internal Medicine, Hematology & Oncology (M.D.) in New York, New York, trained at Icahn School of Medicine at Mount Sinai (class of 2012). Their prescriptions cost Medicare Part D more than their services did: $632,337 for 874 claims, against $103,233 paid for services in 2024. Stemline Therapeutics Inc. was the largest of 4 companies reporting payments in 2025, $9,543 in all, mostly consulting fees.
Overview
| NPI | 1083980189 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Mar 22, 2012 |
| Last updated in NPPES | Feb 23, 2021 |
| Certified by provider | Feb 23, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | 274527 | NY |
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 - Hematology/Oncology (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 349 |
|---|---|
| Services billed | 1,200 across 23 procedure codes |
| Paid by Medicare | $103,233 |
Part D prescriptions in 2024
| Prescriptions (claims) | 874 · 1,904 30-day fills |
|---|---|
| Patients | 247 |
| Total drug cost | $632,337 |
| Generic share | 94% of claims |
Education and affiliations
| Medical school | Icahn School of Medicine at Mount Sinai |
|---|---|
| Graduation year | 2012 |
| Medicare specialty | Hematology/Oncology |
| Telehealth | Offers telehealth |
Medical group
- New York UniversityNew York, NY · 6,134 clinicians
Hospital affiliation
- NYU Langone HospitalsNew York, NY
Industry payments (Open Payments)
- 2025$9,543 · 20 payments from 4 companies
- 2024$13,959 · 30 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Stemline Therapeutics Inc. | $4,701 | 12 |
| Astrazeneca Pharmaceuticals LP | $3,830 | 3 |
| Daiichi Sankyo Inc. | $804.88 | 2 |
| Novartis Pharmaceuticals Corporation | $207.27 | 3 |
What the 2025 payments were for
- Consulting Fee$8,415 · 6 payments
- Food and Beverage$961.47 · 12 payments
- Long term medical supply or device loan$166.66 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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