Mark Leekoff, MD
NPI 1598183311ActiveIndividual· Psychiatry & Neurology, Neurology· Bridgewater, NJ
Psychiatry & Neurology, Neurology (MD) in Bridgewater, New Jersey, trained at West Virginia University School of Medicine (class of 2014). Their prescriptions cost Medicare Part D more than their services did: $804,476 for 554 claims, against $21,613 paid for services in 2024. Tg Therapeutics, Inc. was the largest of 21 companies reporting payments in 2025, $70,218 in all, mostly speaking and faculty fees.
Overview
| NPI | 1598183311 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Mar 29, 2014 |
| Last updated in NPPES | Jul 2, 2024 |
| Certified by provider | Jul 2, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychiatry & Neurology, Neurology Primary | 2084N0400X | 25MA10958400 | NJ |
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 - Neurology (NJ) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 85 |
|---|---|
| Services billed | 272 across 5 procedure codes |
| Paid by Medicare | $21,613 |
Part D prescriptions in 2024
| Prescriptions (claims) | 554 · 1,052 30-day fills |
|---|---|
| Patients | 170 |
| Total drug cost | $804,476 |
| Generic share | 83% of claims |
Education and affiliations
| Medical school | West Virginia University School of Medicine |
|---|---|
| Graduation year | 2014 |
| Medicare specialty | Neurology |
| Telehealth | Offers telehealth |
Medical group
- Practice Associates Medical GroupSummit, NJ · 1,408 clinicians
Hospital affiliations
- Ahs Hospital CorpHackettstown, NJ
- Morristown Medical CenterMorristown, NJ
- Newton Medical CenterNewton, NJ
- Overlook Medical CenterSummit, NJ
Industry payments (Open Payments)
- 2025$70,218 · 206 payments from 21 companies
- 2024$39,890 · 144 payments from 24 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Tg Therapeutics, Inc. | $32,144 | 57 |
| Amgen Inc. | $24,599 | 35 |
| E.R. Squibb & Sons, L.L.C. | $10,660 | 11 |
| Novartis Pharmaceuticals Corporation | $678.33 | 33 |
| Emd Serono, Inc. | $589.15 | 11 |
What the 2025 payments were for
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$55,358 · 20 payments
- Travel and Lodging$9,071 · 27 payments
- Food and Beverage$5,639 · 158 payments
- Consulting Fee$150.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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