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Edit this profileAt a glance
- 41680 Miss Bessie Dr Ste 301, Leonardtown, MD 20650
About Dr. O'brien
Based in Leonardtown, MD, Maria L. O'Brien, M.D. is listed in the NPI registry under family medicine. Maria graduated from Creighton University School of Medicine in 2002. NPI 1366429011 identifies this record in the national registry.
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
- (301) 997-0055
- Email not available
Is this your home address or personal number? Hide it
Practice Locations
41680 MISS BESSIE DR STE 301
Leonardtown, MD 20650
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 8
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.
Other family doctors in Leonardtown 8
Same specialty, same city.
More connections — 16 related providers in 2 groups
Trained at Creighton University School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 2002 at Creighton University School of Medicine 8
Providers who graduated from the same medical school in the same year.
Common questions
What is Maria L. O'Brien's specialty?
Maria L. O'Brien is a family doctor in Leonardtown, MD. That is the designation recorded for this NPI in the federal registry, where it is listed as “Family Medicine”.
NPI registry
Where can I find Maria L. O'Brien?
Maria L. O'Brien is listed at 41680 Miss Bessie Dr Ste 301, Leonardtown, MD 20650. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Maria L. O'Brien?
The number on file is (301) 997-0055. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Maria L. O'Brien?
Maria L. O'Brien's National Provider Identifier is 1366429011. 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
What is Maria L. O'Brien's education?
Maria L. O'Brien attended Creighton University School of Medicine, graduating in 2002. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Maria L. O'Brien have?
Maria L. O'Brien has 24 years experience. Calculated from a graduation year of 2002, reported in the CMS National Downloadable File.
CMS public data
Is Maria L. O'Brien's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Maria L. O'Brien. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.