Margaret Isely Dauphin-Van Dyk, M.D.
NPI 1801852926ActiveIndividual· Specialist· Chicago, IL
Specialist (M.D.) in Chicago, Illinois, licensed in IL, with an NPI issued in April 2006. Their prescriptions cost Medicare Part D more than their services did: $140,443 for 2,202 claims, against $17,094 paid for services in 2024. Intuitive Surgical, Inc. was the largest of 2 companies reporting payments in 2025, $246.26 in all, mostly food and beverage. Lists Presence Saint Joseph Hospital - Chicago as a hospital affiliation.
Overview
| NPI | 1801852926 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Apr 26, 2006 |
| Last updated in NPPES | Aug 31, 2022 |
| Certified by provider | Aug 31, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Specialist Primary | 174400000X | 036059705 | IL |
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 - Internal Medicine (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 34 |
|---|---|
| Services billed | 237 across 13 procedure codes |
| Paid by Medicare | $17,094 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,202 · 3,888 30-day fills |
|---|---|
| Patients | 85 |
| Total drug cost | $140,443 |
| Generic share | 88% of claims |
Education and affiliations
| Graduation year | 1978 |
|---|---|
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Hospital affiliation
- Presence Saint Joseph Hospital - ChicagoChicago, IL
Industry payments (Open Payments)
- 2025$246.26 · 2 payments from 2 companies
- 2024$14.92 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Intuitive Surgical, Inc. | $125.37 | 1 |
| Novo Nordisk Inc | $120.89 | 1 |
What the 2025 payments were for
- Food and Beverage$246.26 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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