John Joseph Stryker, NP
NPI 1427281336ActiveIndividual· Nurse Practitioner, Family· Chicago, IL
Nurse Practitioner, Family (NP) with Tpa Network Incorporated, practicing in Chicago, Illinois. Their prescriptions cost Medicare Part D more than their services did: $710,757 for 1,433 claims, against $395.43 paid for services in 2024. Viiv Healthcare Company was the largest of 5 companies reporting payments in 2025, $1,225 in all, mostly food and beverage. Lists Advocate Illinois Masonic Medical Center as a hospital affiliation.
Overview
| NPI | 1427281336 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | NP |
| Sole proprietor | No |
| NPI issued | Aug 25, 2009 |
| Last updated in NPPES | Mar 21, 2025 |
| Certified by provider | Mar 21, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Family Primary | 363LF0000X | 209-007857 | IL |
| Clinical Nurse Specialist | 364S00000X | 209005950 | 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 - Nurse Practitioner (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 24 |
|---|---|
| Services billed | 74 across 6 procedure codes |
| Paid by Medicare | $395.43 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,433 · 3,099 30-day fills |
|---|---|
| Patients | 122 |
| Total drug cost | $710,757 |
| Generic share | 73% of claims |
Education and affiliations
| Graduation year | 2005 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical group
- Tpa Network IncorporatedChicago, IL · 10 clinicians
Hospital affiliation
- Advocate Illinois Masonic Medical CenterChicago, IL
Industry payments (Open Payments)
- 2025$1,225 · 47 payments from 5 companies
- 2024$129.99 · 2 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Viiv Healthcare Company | $634.90 | 32 |
| Gilead Sciences, Inc. | $395.80 | 8 |
| Merck Sharp & Dohme LLC | $127.91 | 5 |
| Theratechnologies Inc. | $46.17 | 1 |
| Amgen Inc. | $20.67 | 1 |
What the 2025 payments were for
- Food and Beverage$955.45 · 46 payments
- Consulting Fee$270.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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