Morris B. Chang, M.D.
NPI 1164420428ActiveIndividual· Psychiatry & Neurology, Sleep Medicine· Issaquah, WA
Psychiatry & Neurology, Sleep Medicine (M.D.) in Issaquah, Washington, trained at University of Kansas School of Med (Kc/Wich/Sal) (class of 1992). 483 Medicare patients in 2024, $58,196 paid; all of their 96 Part D prescriptions were generic. Jazz Pharmaceuticals Inc. was the largest of 4 companies reporting payments in 2025, $327.81 in all, mostly food and beverage.
Overview
| NPI | 1164420428 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Jul 11, 2005 |
| Last updated in NPPES | Jun 8, 2026 |
| Certified by provider | Jun 8, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychiatry & Neurology, Sleep Medicine Primary | 2084S0012X | MD00036316 | WA |
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 (WA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 483 |
|---|---|
| Services billed | 652 across 12 procedure codes |
| Paid by Medicare | $58,196 |
Part D prescriptions in 2024
| Prescriptions (claims) | 96 · 170 30-day fills |
|---|---|
| Patients | 29 |
| Total drug cost | $2,688 |
| Generic share | 100% of claims |
Education and affiliations
| Medical school | University of Kansas School of Med (Kc/Wich/Sal) |
|---|---|
| Graduation year | 1992 |
| Medicare specialty | Neurology |
| Secondary specialties | Sleep Medicine |
| Telehealth | Offers telehealth |
Medical groups
- Swedish Health ServicesSeattle, WA · 1,037 clinicians
- Olympic Medical PhysiciansPort Angeles, WA · 110 clinicians
Hospital affiliations
- Olympic Medical CenterPort Angeles, WA
- Swedish Edmonds HospitalEdmonds, WA
- Swedish IssaquahIssaquah, WA
- Swedish Medical CenterSeattle, WA
- Swedish Medical Center / Cherry HillSeattle, WA
Industry payments (Open Payments)
- 2025$327.81 · 5 payments from 4 companies
- 2024$160.03 · 5 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Jazz Pharmaceuticals Inc. | $200.00 | 2 |
| Harmony Biosciences LLC | $48.20 | 1 |
| Takeda Pharmaceuticals U.S.A., Inc. | $45.61 | 1 |
| 3b Medical, Inc. | $34.00 | 1 |
What the 2025 payments were for
- Food and Beverage$177.81 · 4 payments
- Consulting Fee$150.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records