Hrayr Pierre Attarian, MD
NPI 1427089119ActiveIndividual· Psychiatry & Neurology, Sleep Medicine· Chicago, IL
Psychiatry & Neurology, Sleep Medicine (MD) with Northwestern Medical Faculty Foundation, practicing in Chicago, Illinois. Their prescriptions cost Medicare Part D more than their services did: $231,989 for 1,024 claims, against $61,480 paid for services in 2024. Avadel Cns Pharmaceuticals, LLC reported $5,247 in payments in 2025, mostly consulting fees. Lists Northwestern Lake Forest Hospital and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1427089119 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 5, 2006 |
| Last updated in NPPES | Jan 29, 2014 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychiatry & Neurology, Sleep Medicine Primary | 2084S0012X | 036122896 | IL |
| Psychiatry & Neurology, Neurology | 2084N0400X | 036122896 | 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 - Sleep Medicine (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 600 |
|---|---|
| Services billed | 1,034 across 15 procedure codes |
| Paid by Medicare | $61,480 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,024 · 1,474 30-day fills |
|---|---|
| Patients | 184 |
| Total drug cost | $231,989 |
| Generic share | 79% of claims |
Education and affiliations
| Graduation year | 1992 |
|---|---|
| Medicare specialty | Sleep Medicine |
| Secondary specialties | Neurology |
| Telehealth | Offers telehealth |
Medical group
- Northwestern Medical Faculty FoundationChicago, IL · 4,503 clinicians
Hospital affiliations
- Northwestern Lake Forest HospitalLake Forest, IL
- Northwestern Medicine Central Dupage HospitalWinfield, IL
- Northwestern Memorial HospitalChicago, IL
Industry payments (Open Payments)
- 2025$5,247 · 19 payments from 1 company
- 2024$14,284 · 16 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Avadel Cns Pharmaceuticals, LLC | $5,247 | 19 |
What the 2025 payments were for
- Consulting Fee$3,815 · 1 payment
- Travel and Lodging$1,105 · 4 payments
- Food and Beverage$326.12 · 14 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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