Quick answers
- Where does Mark A. Williams see patients?
- Medicare's clinician data lists 1 practice location in Redmond, OR. Call before your visit to confirm the address.
- What is Mark A. Williams's specialty?
- Medicare lists Mental Health Counselor as the primary specialty.
- Does Mark A. Williams accept Medicare assignment?
- Yes. Medicare's clinician data says Mark A. Williams 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 A. Williams?
- (541) 388-8459, as listed in official Medicare / NPI Registry data.
- What is Mark A. Williams's NPI number?
- 1598065807. 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 A. Williams is enrolled with Medicare (CMS data updated 2026-10-02).
- 215 SW 7th StRedmond, OR 97756 (541) 388‑8459
Group practices
Medicare enrollment lists Mark A. Williams as a member of this group (CMS data updated 2026-10-02).
- Rimrock Trails Treatment Services9 clinicians in the group
Specialties
- Mental Health Counselorprimary
Other mental health counselors in Redmond
Clinicians with the same Medicare primary specialty in Redmond, OR — not a recommendation.
Clinician information
| Graduation year | 2007 |
|---|---|
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1598065807 |
| 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