Mark S. Dykewicz, MD
NPI 1518971092ActiveIndividual· Internal Medicine, Allergy & Immunology· Saint Louis, MO
Internal Medicine, Allergy & Immunology (MD) in Saint Louis, Missouri, trained at Saint Louis University School of Medicine (class of 1981). Their prescriptions cost Medicare Part D more than their services did: $51,611 for 232 claims, against $7,619 paid for services in 2024. Novartis Pharmaceuticals Corporation was the largest of 2 companies reporting payments in 2025, $89.22 in all, mostly food and beverage.
Overview
| NPI | 1518971092 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Jul 28, 2006 |
| Last updated in NPPES | Apr 1, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Allergy & Immunology Primary | 207RA0201X | R3N72 | MO |
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 (MO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 70 |
|---|---|
| Services billed | 217 across 13 procedure codes |
| Paid by Medicare | $7,619 |
Part D prescriptions in 2024
| Prescriptions (claims) | 232 · 328 30-day fills |
|---|---|
| Patients | 48 |
| Total drug cost | $51,611 |
| Generic share | 73% of claims |
Education and affiliations
| Medical school | Saint Louis University School of Medicine |
|---|---|
| Graduation year | 1981 |
| Medicare specialty | Allergy/Immunology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Ssm Health Care GroupSaint Louis, MO · 940 clinicians
Hospital affiliation
- Ssm Health Saint Louis University HospitalSaint Louis, MO
Industry payments (Open Payments)
- 2025$89.22 · 2 payments from 2 companies
- 2024$32.88 · 2 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novartis Pharmaceuticals Corporation | $52.62 | 1 |
| Pfizer Inc. | $36.60 | 1 |
What the 2025 payments were for
- Food and Beverage$52.62 · 1 payment
- Education$36.60 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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