Dennis Flanagan, DDS

NPI 1588797419 · on the registry since 2007

Practice

Address: 56 Whitehall Ave Ste 3
Mystic, CT 06355
Phone: (860) 222-7500
Fax: (475) 356-3009
Organisation at this address: Seaport Clinic Llc
Annette L Headley Md Llc
J. Andrew Hallberg, Md, Llc
Inferred from a shared address, not stated in the registry.
Clinicians at this address: 3

Registry record

Primary taxonomy: 1223G0001X
1223G0001X
Licence states on file: CT
From the registry's licence fields, which are often incomplete.
Sex: Male
Record last updated: 2025-09-29

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 Connecticut