Quick answers
- Which hospitals does Derek J. Louie work at?
- Medicare's official clinician data lists Derek J. Louie at 1 hospital: OHSU Hospital and Clinics. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Derek J. Louie see patients?
- Medicare's clinician data lists 1 practice location in Astoria, OR. Call before your visit to confirm the address.
- What is Derek J. Louie's specialty?
- Medicare lists Optometry as the primary specialty.
- Does Derek J. Louie accept Medicare assignment?
- Yes. Medicare's clinician data says Derek J. Louie accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Derek J. Louie?
- (503) 338-3803, as listed in official Medicare / NPI Registry data.
- What is Derek J. Louie's NPI number?
- 1235281379. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Derek J. Louie works
Medicare's Facility Affiliation Data lists Derek J. Louie at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- OHSU Hospital and ClinicsPortland, OR · Acute Care Hospital · CCN 380009
Practice locations
Addresses where Derek J. Louie is enrolled with Medicare (CMS data updated 2026-10-02).
- 2055 Exchange St, Suite 230Astoria, OR 97103 (503) 338‑3803
Group practices
Medicare enrollment lists Derek J. Louie as a member of this group (CMS data updated 2026-10-02).
- University Professional Services1,724 clinicians in the group
Specialties
- Optometryprimary
Other optometrists in Oregon
Clinicians with the same Medicare primary specialty in Oregon — not a recommendation.
Clinician information
| Credential | OD |
|---|---|
| Medical school | Southern California College Of Optometry |
| Graduation year | 2005 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1235281379 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians