Provider Profile
Fiona M. O'Sullivan, MSW
Unclaimed ProfileAbout Fiona O'sullivan
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Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
Contact Information
- (413) 499-0412
- Email not available
Practice Locations
359 FENN ST
Pittsfield, MA 01201
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Related specialists at this location 1
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Common questions
What does Fiona M. O'Sullivan specialize in?
Fiona M. O'Sullivan is a clinical social worker in Pittsfield, MA. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where is Fiona M. O'Sullivan located?
Fiona M. O'Sullivan is listed at 359 Fenn St, Pittsfield, MA 01201. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Fiona M. O'Sullivan's phone number?
The number on file is (413) 499-0412. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Fiona M. O'Sullivan's NPI number?
Fiona M. O'Sullivan's National Provider Identifier is 1356127120. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
How long has Fiona M. O'Sullivan been practicing?
Fiona M. O'Sullivan has 3+ years experience. Registered with an NPI since 2023. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.
NPI registry
Has Fiona M. O'Sullivan confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Fiona M. O'Sullivan. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.