Search › Massachusetts › 207R00000X
William O'Connor, M.D
NPI 1699756650 · on the registry since 2005
Practice
- Address
- 65 Canal St
Millbury, MA 01527 - Phone
- (508) 865-9960
- Clinicians at this address
- 9
Registry record
- Primary taxonomy
- 207R00000X
207R00000X
- Licence states on file
- MA
From the registry's licence fields, which are often incomplete.
- Sex
- Male
- Record last updated
- 2026-07-13
Source: CMS National Plan and Provider Enumeration System. Registration is not the same as practising, and the registry records no retirement — some people listed here no longer practise. More in Massachusetts