Katherine Szema, M.D.
NPI 1841363660ActiveIndividual· Allergy & Immunology· Shrewsbury, NJ
Allergy & Immunology (M.D.) in Shrewsbury, New Jersey, trained at Jefferson Medical College of Thomas Jefferson University (class of 1995). Their prescriptions cost Medicare Part D more than their services did: $388,401 for 972 claims, against $111,334 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 17 companies reporting payments in 2025, $2,067 in all, mostly food and beverage.
Overview
| NPI | 1841363660 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Nov 17, 2006 |
| Last updated in NPPES | Jul 25, 2025 |
| Certified by provider | Jul 25, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Allergy & Immunology Primary | 207K00000X | 25MA09533300 | NJ |
| Allergy & Immunology, Allergy | 207KA0200X | 25MA09533300 | NJ |
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 - Allergy/Immunology (NJ) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 341 |
|---|---|
| Services billed | 15,604 across 23 procedure codes |
| Paid by Medicare | $111,334 |
Part D prescriptions in 2024
| Prescriptions (claims) | 972 · 1,667 30-day fills |
|---|---|
| Patients | 285 |
| Total drug cost | $388,401 |
| Generic share | 84% of claims |
Education and affiliations
| Medical school | Jefferson Medical College of Thomas Jefferson University |
|---|---|
| Graduation year | 1995 |
| Medicare specialty | Allergy/Immunology |
| Secondary specialties | Pediatric Medicine |
Medical group
- ENT and Allergy Associates LLPForest Hills, NY · 432 clinicians
Industry payments (Open Payments)
- 2025$2,067 · 90 payments from 17 companies
- 2024$1,859 · 75 payments from 18 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $584.11 | 22 |
| Regeneron Healthcare Solutions, Inc. | $431.79 | 19 |
| Genzyme Corporation | $189.38 | 5 |
| Ars Pharmaceuticals Operations, Inc. | $178.35 | 5 |
| Glaxosmithkline, LLC. | $156.05 | 10 |
What the 2025 payments were for
- Food and Beverage$2,017 · 87 payments
- Consulting Fee$50.23 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records