Quick answers
- Where does Aaron S. Cosman see patients?
- Medicare's clinician data lists 3 practice locations, including Portland, OR and Happy Valley, OR. Call before your visit to confirm the address.
- What is Aaron S. Cosman's specialty?
- Medicare lists Nurse Practitioner as the primary specialty.
- Does Aaron S. Cosman accept Medicare assignment?
- Yes. Medicare's clinician data says Aaron S. Cosman 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.
- Does Aaron S. Cosman offer telehealth?
- Medicare's clinician data says Aaron S. Cosman offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Aaron S. Cosman?
- (503) 239-6673, as listed in official Medicare / NPI Registry data.
- What is Aaron S. Cosman's NPI number?
- 1538558242. 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 Aaron S. Cosman is enrolled with Medicare (CMS data updated 2026-10-02).
- 1111 NE 99th AvePortland, OR 97220
- 5050 NE Hoyt, Suite 655Portland, OR 97213 (503) 239‑6673
- 9300 SE 91st Ave, Suite 300Happy Valley, OR 97086 (503) 963‑2707
Group practices
Medicare enrollment lists Aaron S. Cosman as a member of this group (CMS data updated 2026-10-02).
- The Oregon Clinic, PC362 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Portland
Clinicians with the same Medicare primary specialty in Portland, OR — not a recommendation.
Clinician information
| Graduation year | 2014 |
|---|---|
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1538558242 |
| 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