Quick answers
- Where does River Williams see patients?
- Medicare's clinician data lists 1 practice location in Lincoln, NE. Call before your visit to confirm the address.
- What is River Williams's specialty?
- Medicare lists Clinical Psychologist as the primary specialty.
- Does River Williams accept Medicare assignment?
- Yes. Medicare's clinician data says River 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 River Williams?
- (402) 489-2218, as listed in official Medicare / NPI Registry data.
- What is River Williams's NPI number?
- 1932889268. 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 River Williams is enrolled with Medicare (CMS data updated 2026-10-02).
- 4435 O St, Suite 211Lincoln, NE 68510 (402) 489‑2218
Group practices
Medicare enrollment lists River Williams as a member of this group (CMS data updated 2026-10-02).
- Marti Mental Health Services Inc2 clinicians in the group
Specialties
- Clinical Psychologistprimary
Other clinical psychologists in Lincoln
Clinicians with the same Medicare primary specialty in Lincoln, NE — not a recommendation.
Clinician information
| Graduation year | 2024 |
|---|---|
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1932889268 |
| 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