Quick answers
- Where does William C. Olcott see patients?
- Medicare's clinician data lists 3 practice locations, including Middleboro, MA and Boston, MA. Call before your visit to confirm the address.
- What is William C. Olcott's specialty?
- Medicare lists Psychiatry as the primary specialty.
- Does William C. Olcott accept Medicare assignment?
- Medicare's clinician data says William C. Olcott may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- What is the phone number for William C. Olcott?
- (774) 419-1000, as listed in official Medicare / NPI Registry data.
- What is William C. Olcott's NPI number?
- 1114414828. 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 William C. Olcott is enrolled with Medicare (CMS data updated 2026-10-02).
- 23 Isaac StMiddleboro, MA 02346 (774) 419‑1000
- 332 Hanover SreetBoston, MA 02113
- 332 Hanover StBoston, MA 02113 (617) 643‑8000
Group practices
Medicare enrollment lists William C. Olcott as a member of these groups (CMS data updated 2026-10-02).
- The McLean Hospital Corporation192 clinicians in the group
- North End Community Health Committee, Inc.55 clinicians in the group
Specialties
- Psychiatryprimary
Other psychiatrists in Middleboro
Clinicians with the same Medicare primary specialty in Middleboro, MA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2018 |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1114414828 |
| 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