Provider Profile
Gregory Marcellin, FNP-BC
Unclaimed ProfileAbout Gregory Marcellin
No biography has been added yet. Is this you? Claim this profile to add one.
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.
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (617) 425-2000
- Email not available
Practice Locations
1601 WASHINGTON ST
Boston, MA 02118
1 Portsmouth Ave
Stratham, NH 03885
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other nurse practitioners at this location 4
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 4
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.
More connections — 8 related providers in 1 group
Common questions
What is Gregory Marcellin's specialty?
Gregory Marcellin is a nurse practitioner in Boston, MA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Nurse Practitioner — Family”.
NPI registry
Where can I find Gregory Marcellin?
Gregory Marcellin is listed at 1601 Washington St, Boston, MA 02118. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Gregory Marcellin?
The number on file is (617) 425-2000. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Gregory Marcellin?
Gregory Marcellin's National Provider Identifier is 1881060861. 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 much experience does Gregory Marcellin have?
Gregory Marcellin has 11+ years experience. Registered with an NPI since 2015. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.
NPI registry
Is Gregory Marcellin's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Gregory Marcellin. 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.