Mary Kristine Ellis, M.D.
NPI 1134447329ActiveIndividual· Family Medicine· Oceanside, NY
Family Medicine (M.D.) with Mount Sinai School of Medicine, practicing in Oceanside, New York. Their prescriptions cost Medicare Part D more than their services did: $55,576 for 419 claims, against $6,114 paid for services in 2024. Organon LLC was the largest of 6 companies reporting payments in 2025, $1,906 in all, mostly compensation for serving as faculty or as a speaker for a me. Lists Mount Sinai South Nassau as a hospital affiliation.
Overview
| NPI | 1134447329 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | May 12, 2010 |
| Last updated in NPPES | Dec 6, 2022 |
| Certified by provider | Dec 6, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | 277569 | NY |
| Family Medicine | 207Q00000X | ME116438 | FL |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
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 - Family Practice (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 60 |
|---|---|
| Services billed | 94 across 9 procedure codes |
| Paid by Medicare | $6,114 |
Part D prescriptions in 2024
| Prescriptions (claims) | 419 · 830 30-day fills |
|---|---|
| Patients | 86 |
| Total drug cost | $55,576 |
| Generic share | 82% of claims |
Education and affiliations
| Graduation year | 2009 |
|---|---|
| Medicare specialty | Family Practice |
Medical group
- Mount Sinai School of MedicineOceanside, NY · 148 clinicians
Hospital affiliation
- Mount Sinai South NassauOceanside, NY
Industry payments (Open Payments)
- 2025$1,906 · 8 payments from 6 companies
- 2024$272.81 · 5 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Organon LLC | $1,521 | 1 |
| Glaxosmithkline, LLC. | $125.00 | 1 |
| Inspire Medical Systems, Inc. | $118.94 | 2 |
| Novo Nordisk Inc | $97.26 | 2 |
| Biogen, Inc. | $27.19 | 1 |
What the 2025 payments were for
- Compensation for serving as faculty or as a speaker for a medical education program$1,521 · 1 payment
- Food and Beverage$385.35 · 7 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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