Mark O'Connor, M.D

NPI 1215297270 · on the registry since 2012

Practice

Address: 100 Hospital Rd
Leominster, MA 01453
Phone: (978) 466-2052
Fax: (978) 466-2085
Organisation at this address: Coordinated Primary Care
Mass Lung & Allergy, Pc.
Leominster Dermatology Llp
Coordinated Primary Care Inc
Coordinated Primary Care Inc
Inferred from a shared address, not stated in the registry.
Clinicians at this address: 59

Registry record

Primary taxonomy: 207RC0000X
207RC0000X
Licence states on file: MA
From the registry's licence fields, which are often incomplete.
Sex: Male
Record last updated: 2025-09-10

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