Quick answers
- Where does J A. Williamson see patients?
- Medicare's clinician data lists 1 practice location in Davenport, IA. Call before your visit to confirm the address.
- What is J A. Williamson's specialty?
- Medicare lists Clinical Psychologist as the primary specialty.
- Does J A. Williamson accept Medicare assignment?
- Yes. Medicare's clinician data says J A. Williamson 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 J A. Williamson?
- (563) 359-4049, as listed in official Medicare / NPI Registry data.
- What is J A. Williamson's NPI number?
- 1649711052. 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 J A. Williamson is enrolled with Medicare (CMS data updated 2026-10-02).
- 2102 E 38th StDavenport, IA 52807 (563) 359‑4049
Group practices
Medicare enrollment lists J A. Williamson as a member of this group (CMS data updated 2026-10-02).
- Psychology Health Group10 clinicians in the group
Specialties
- Clinical Psychologistprimary
Other clinical psychologists in Davenport
Clinicians with the same Medicare primary specialty in Davenport, IA — not a recommendation.
Clinician information
| Graduation year | 2015 |
|---|---|
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1649711052 |
| 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