Quick answers
- Where does Lionel P. Marx see patients?
- Medicare's clinician data lists 5 practice locations, including Portland, OR, Gresham, OR and Vancouver, WA. Call before your visit to confirm the address.
- What is Lionel P. Marx's specialty?
- Medicare lists Physician Assistant as the primary specialty.
- Does Lionel P. Marx accept Medicare assignment?
- Yes. Medicare's clinician data says Lionel P. Marx 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 Lionel P. Marx?
- (503) 413-8988, as listed in official Medicare / NPI Registry data.
- What is Lionel P. Marx's NPI number?
- 1013268200. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Lionel P. Marx is enrolled with Medicare (CMS data updated 2026-10-02).
- 1130 NW 22nd Ave, Suite 220Portland, OR 97210 (503) 413‑8988
- 22262 NE Glisan StGresham, OR 97030 (503) 489‑2024
- 305 SE Chkalov Dr, Suite 170Vancouver, WA 98683 (360) 799‑3912
- 3425 SE 192nd Ave, Suite 106Vancouver, WA 98683 (360) 205‑2960
- 4800 SW 76th AvePortland, OR 97225 (971) 808‑0665
Group practices
Medicare enrollment lists Lionel P. Marx as a member of this group (CMS data updated 2026-10-02).
- Legacy Clinics LLC713 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Portland
Clinicians with the same Medicare primary specialty in Portland, OR — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 2012 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1013268200 |
| 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
- 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