Quick answers
- Where does Mark McMullan see patients?
- Medicare's clinician data lists 1 practice location in Olympia, WA. Call before your visit to confirm the address.
- What is Mark McMullan's specialty?
- Medicare lists Occupational Therapist in Private Practice as the primary specialty.
- Does Mark McMullan accept Medicare assignment?
- Yes. Medicare's clinician data says Mark McMullan 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 Mark McMullan?
- (360) 923-7000, as listed in official Medicare / NPI Registry data.
- What is Mark McMullan's NPI number?
- 1588329973. 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 Mark McMullan is enrolled with Medicare (CMS data updated 2026-10-02).
- 700 Lilly Rd NEOlympia, WA 98506 (360) 923‑7000
Group practices
Medicare enrollment lists Mark McMullan as a member of this group (CMS data updated 2026-10-02).
- Kaiser Foundation Health Plan of Washington1,526 clinicians in the group
Specialties
Find other clinicians: Occupational Therapist in Private Practice, Washington →
Other occupational therapists in Olympia
Clinicians with the same Medicare primary specialty in Olympia, WA — not a recommendation.
Clinician information
| Credential | OT |
|---|---|
| Graduation year | 2021 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1588329973 |
| 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