Nizar Chahin, M.D.
NPI 1225015761ActiveIndividual· Psychiatry & Neurology, Neurology· Portland, OR
Psychiatry & Neurology, Neurology (M.D.) with University Professional Services, practicing in Portland, Oregon. Their prescriptions cost Medicare Part D more than their services did: $6,775,833 for 1,174 claims, against $34,376 paid for services in 2024. Amicus Therapeutics, Inc. was the largest of 3 companies reporting payments in 2025, $6,623 in all, mostly consulting fees. Lists Hillsboro Medical Center and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1225015761 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Dec 27, 2005 |
| Last updated in NPPES | Aug 19, 2016 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychiatry & Neurology, Neurology Primary | 2084N0400X | MD176969 | OR |
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 - Neurology (OR) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 206 |
|---|---|
| Services billed | 535 across 17 procedure codes |
| Paid by Medicare | $34,376 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,174 · 1,634 30-day fills |
|---|---|
| Patients | 129 |
| Total drug cost | $6,775,833 |
| Generic share | 70% of claims |
Education and affiliations
| Graduation year | 1992 |
|---|---|
| Medicare specialty | Neurology |
| Telehealth | Offers telehealth |
Medical group
- University Professional ServicesBeaverton, OR · 1,724 clinicians
Hospital affiliations
- Hillsboro Medical CenterHillsboro, OR
- Ohsu Hospital and ClinicsPortland, OR
- Samaritan Albany General HospitalAlbany, OR
Other facilities
- Providence Home HealthHome health agency · Portland, OR
Industry payments (Open Payments)
- 2025$6,623 · 7 payments from 3 companies
- 2024$14,537 · 21 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amicus Therapeutics, Inc. | $6,563 | 4 |
| Argenx US, Inc. | $30.41 | 1 |
| Ucb, Inc. | $30.00 | 2 |
What the 2025 payments were for
- Consulting Fee$4,800 · 1 payment
- Travel and Lodging$1,561 · 1 payment
- Food and Beverage$232.35 · 3 payments
- Education$30.00 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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