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Edit this profileAt a glance
- 330 Brookline Ave, Boston, MA 02215
About Sebastian Niezen
Based in Boston, MA, Sebastian Niezen is listed in the NPI registry under gastroenterology. Sebastian is also listed as specializing in internal medicine. NPI 1265162291 identifies this record in the national registry.
Factual summary compiled by Guide.md from public records; not written by this provider.
Specialty
Credentials & Licensing
Contact Information
- (617) 480-3735
- Email not available
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Practice Locations
330 BROOKLINE AVE
Boston, MA 02215
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 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.
Common questions
What kind of doctor is Sebastian Niezen?
Sebastian Niezen is a gastroenterologist in Boston, MA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Gastroenterology”.
NPI registry
What is Sebastian Niezen's address?
Sebastian Niezen is listed at 330 Brookline Ave, Boston, MA 02215. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Sebastian Niezen?
The number on file is (617) 480-3735. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Sebastian Niezen?
Sebastian Niezen's National Provider Identifier is 1265162291. 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 Sebastian Niezen have?
Sebastian Niezen has 4+ years experience. Registered with an NPI since 2022. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.
NPI registry
Is Sebastian Niezen's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Sebastian Niezen. If this is you, claiming it is free.
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