What is Michael O'Brien's NPI number?

Michael O'Brien's National Provider Identifier (NPI) is 1790293827, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Michael O'Brien's specialty?

Michael O'Brien is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).

Where is Michael O'Brien located?

Michael O'Brien's practice location on file with NPPES is 729 Boylston St, Boston, MA 02116-2639.

What is Michael O'Brien's phone number?

The practice phone number listed in the NPPES registry for Michael O'Brien is (617) 286-4945.

Is Michael O'Brien's NPI active?

Yes — Michael O'Brien's NPI (1790293827) is active in the NPPES registry as of the last update on 2025-06-13.

IndividualActive

Michael O'Brien

NPI 1790293827 · Clinical Psychologist · Boston, MA

Michael O'Brien is a Clinical Psychologist provider in Boston, MA (NPI 1790293827).

Provider details

NPI number: 1790293827
Entity type: Individual
Primary specialty: Clinical PsychologistBehavioral Health & Social Service Providers
Sex: Male
Sole proprietor: Yes
License: PSY10001410 (MA)

Specialties & taxonomies

Clinical PsychologistPrimary103TC0700XLicense PSY10001410 (MA)
Behavioral Health & Social Service Providers

Profile Score

Established profile(69/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
8 yrs 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

729 Boylston St

Boston, MA 02116-2639

Phone: (617) 286-4945

Street-level locationGet directions

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Mailing address