Monica O'Brien, MD
NPI 1194528679 · Otolaryngology Physician · Boston, MA
Enrolled with Medicare as Order and Referring Only - Otolaryngology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Monica O'Brien, MD is a Otolaryngology Physician provider in Boston, MA (NPI 1194528679).
Provider details
- NPI number
- 1194528679
- Entity type
- Individual
- Primary specialty
- Otolaryngology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 3018678 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
1 yr in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2025-03-31
- Last updated
- 2025-04-04
- Certified
- 2025-04-04
Frequently asked questions
- What is Monica O'Brien's NPI number?
- Monica O'Brien's National Provider Identifier (NPI) is 1194528679, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Monica O'Brien's specialty?
- Monica O'Brien is listed in the NPPES registry with a primary specialty of Otolaryngology Physician (Allopathic & Osteopathic Physicians).
- Where is Monica O'Brien located?
- Monica O'Brien's practice location on file with NPPES is 800 Washington St, Boston, MA 02111-1552.
- What is Monica O'Brien's phone number?
- The practice phone number listed in the NPPES registry for Monica O'Brien is (617) 636-5000.
- Does Monica O'Brien accept Medicare?
- Monica O'Brien is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Monica O'Brien's NPI active?
- Yes — Monica O'Brien's NPI (1194528679) is active in the NPPES registry as of the last update on 2025-04-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.