Quick answers
- Does Shirley J. Williams accept Medicare assignment?
- Medicare's clinician data says Shirley J. Williams may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
- What is Shirley J. Williams's NPI number?
- 1801968862. 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 Shirley J. Williams is enrolled with Medicare (CMS data updated October 2, 2026).
- 154 E Main StWestborough, MA 01581 (508) 791‑5540
Group practices
Medicare enrollment lists Shirley J. Williams as a member of this group (CMS data updated October 2, 2026).
- Jonathan Rothman MD5 clinicians in the group
Specialties
- Clinical Social Workerprimary
Find other clinicians: Clinical Social Worker, Massachusetts →
Other clinical social workers in Westborough
Clinicians with the same Medicare primary specialty in Westborough, MA — not a recommendation.
Other clinicians in Jonathan Rothman MD
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | CSW |
|---|---|
| Graduation year | 1986 |
| Gender (as listed) | Female |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1801968862 |
| 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 October 2, 2026, retrieved October 29, 2026
- 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