Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Monica S O'Brien, MD

Individual provider Otolaryngology Physician · NPI 1194528679

Monica S O'Brien, MD is an Otolaryngology Physician in Boston, Massachusetts. Licensed in Massachusetts. Registered with an NPI since 2025.

Licensed in
MA
In the registry since
2025
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

800 Washington St
Boston, MA 02111-1552
Phone: (617) 636-5000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Otolaryngology Physician (primary) Taxonomy 207Y00000X · Licence 3018678 (MA)

Record details

NPI number1194528679
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 31, 2025
Last updated in NPPESApril 4, 2025
Certification dateApril 4, 2025

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