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Edit this profileAt a glance
- 300 Main St, Lewiston, ME 04240
About Mark O'brien
Mark C. O'Brien is a certified registered nurse anesthetist (crna) based in Lewiston, ME. Mark is also listed as specializing in certified registered nurse anesthetist. The provider's National Provider Identifier (NPI) is 1174243976.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
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
- (207) 795-0111
- Email not available
Practice Locations
300 MAIN ST
Lewiston, ME 04240
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 certified registered nurse anesthetists at this location 2
Same specialty, same street address — most likely the same department or group.
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.
Other certified registered nurse anesthetists in Lewiston 6
Same specialty, same city.
More connections — 16 related providers in 2 groups
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2025 at Other 8
Providers who graduated from the same medical school in the same year.
Common questions
What kind of doctor is Mark C. O'Brien?
Mark C. O'Brien is a certified registered nurse anesthetist (crna) in Lewiston, ME. That is the designation recorded for this NPI in the federal registry.
NPI registry
What is Mark C. O'Brien's address?
Mark C. O'Brien is listed at 300 Main St, Lewiston, ME 04240. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Mark C. O'Brien?
The number on file is (207) 795-0111. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Mark C. O'Brien's NPI number?
Mark C. O'Brien's National Provider Identifier is 1174243976. 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
Where did Mark C. O'Brien train?
Mark C. O'Brien attended Other, graduating in 2025. This comes from the CMS National Downloadable File.
CMS public data
How long has Mark C. O'Brien been practicing?
Mark C. O'Brien has 1 year experience. Calculated from a graduation year of 2025, reported in the CMS National Downloadable File.
CMS public data
Has Mark C. O'Brien confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Mark C. O'Brien. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.