Michael Mardiney III, M.D.
NPI 1609827724ActiveIndividual· Allergy & Immunology· Ellicott City, MD
Allergy & Immunology (M.D.) in Ellicott City, Maryland, trained at Georgetown University School of Medicine (class of 1989). In 2024 Medicare paid $1,586,146 for 536 patients, and Part D covered 2,189 of their prescriptions, 75% of them generic. Ionis Pharmaceuticals, Inc. was the largest of 2 companies reporting payments in 2025, $80.30 in all, mostly education.
Overview
| NPI | 1609827724 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | May 13, 2006 |
| Last updated in NPPES | Aug 1, 2017 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Allergy & Immunology Primary | 207K00000X | D0043585 | MD |
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 - Allergy/Immunology (MD) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 536 |
|---|---|
| Services billed | 58,714 across 28 procedure codes |
| Paid by Medicare | $1,586,146 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,189 · 4,350 30-day fills |
|---|---|
| Patients | 400 |
| Total drug cost | $921,511 |
| Generic share | 75% of claims |
Education and affiliations
| Medical school | Georgetown University School of Medicine |
|---|---|
| Graduation year | 1989 |
| Medicare specialty | Allergy/Immunology |
Industry payments (Open Payments)
- 2025$80.30 · 4 payments from 2 companies
- 2024$24.84 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Ionis Pharmaceuticals, Inc. | $75.00 | 3 |
| Organon LLC | $5.30 | 1 |
What the 2025 payments were for
- Education$75.00 · 3 payments
- Food and Beverage$5.30 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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