Ryan Huu-Tuan Nguyen, D.O.
NPI 1437509072ActiveIndividual· Internal Medicine, Hematology & Oncology· Chicago, IL
Internal Medicine, Hematology & Oncology (D.O.) with The Board of Trustees of the University of Illinois and 1 other group, practicing in Chicago, Illinois. Their prescriptions cost Medicare Part D more than their services did: $853,900 for 251 claims, against $25,052 paid for services in 2024. Pfizer Inc. was the largest of 14 companies reporting payments in 2025, $114,143 in all, mostly speaking and faculty fees. Lists John H Stroger Jr Hospital and 1 other hospital as hospital affiliations.
Overview
| NPI | 1437509072 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O. |
| Sole proprietor | Yes |
| NPI issued | Jun 14, 2016 |
| Last updated in NPPES | Oct 30, 2023 |
| Certified by provider | Oct 30, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | 036.148875 | IL |
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 - Hematology/Oncology (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 72 |
|---|---|
| Services billed | 343 across 17 procedure codes |
| Paid by Medicare | $25,052 |
Part D prescriptions in 2024
| Prescriptions (claims) | 251 · 308 30-day fills |
|---|---|
| Patients | 45 |
| Total drug cost | $853,900 |
| Generic share | 67% of claims |
Education and affiliations
| Graduation year | 2016 |
|---|---|
| Medicare specialty | Hematology/Oncology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical groups
- The Board of Trustees of the University of IllinoisChicago, IL · 1,150 clinicians
- Cook CountyChicago, IL · 788 clinicians
Hospital affiliations
- John H Stroger Jr HospitalChicago, IL
- University of Illinois Hospital and ClinicsChicago, IL
Industry payments (Open Payments)
- 2025$114,143 · 122 payments from 14 companies
- 2024$77,604 · 90 payments from 14 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Pfizer Inc. | $54,321 | 65 |
| E.R. Squibb & Sons, L.L.C. | $34,824 | 21 |
| Merck Sharp & Dohme LLC | $7,035 | 6 |
| Emd Serono, Inc. | $6,470 | 3 |
| Regeneron Pharmaceuticals, Inc. | $2,701 | 2 |
What the 2025 payments were for
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$68,423 · 18 payments
- Consulting Fee$28,198 · 14 payments
- Travel and Lodging$12,117 · 49 payments
- Food and Beverage$3,405 · 40 payments
- Honoraria$2,000 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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