MICHAEL DAVID O'BRIEN
NPI 1790293827
Psychologist - Clinical in Boston, MA

Q: What is Michael O'brien's NPI number?

The NPI number for Michael O'brien is 1790293827. It was assigned to this individual provider in the NPPES registry on January 10, 2018.

Q: What is Michael O'brien's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.

Q: When was this NPI record last updated?

The NPPES record for Michael O'brien was last updated on June 13, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since January 10, 2018

729 BOYLSTON ST, BOSTON, MA 02116(617) 286-4945 Get Directions Write a Review

NPPES record last updated: June 13, 2025. Verified against the NPPES registry weekly; last sync: August 30, 2026.

Record update history: Jun 13, 2025, Jan 10, 2018 (2 updates tracked since 2018).

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About Michael David O'brien NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MICHAEL DAVID O'BRIEN (NPI 1790293827) is an individual clinical provider in Boston, Massachusetts, licensed in Massachusetts (PSY10001410) and active in the NPI registry since January 2018.

NPPES Registry Identity

NPI1790293827

Entity TypeIndividualMale

Primary Taxonomy103TC0700X

Provider Legal NameMICHAEL DAVID O'BRIEN

Location Address729 BOYLSTON STBoston, MA 02116-2639

Mailing Address729 Boylston StBoston, MA 02116-2639

Phone(617) 286-4945

Sole ProprietorYes

Enumeration DateJanuary 10, 2018

Last NPPES UpdateJune 13, 20252 updates tracked since enumeration

NPPES CertifiedJune 13, 2025

✔ NPI 1790293827 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychologist · ClinicalBehavioral Health & Social Service Providers

Taxonomy Code103TC0700X

License✔ Licensed in MA · PSY10001410

Definition

A psychologist who provides continuing and comprehensive mental and behavioral health care for individuals and families; consultation to agencies and communities; training, education and supervision; and research-based practice. It is a specialty in breadth -- one that is broadly inclusive of severe psychopathology -- and marked by comprehensiveness and integration of knowledge and skill from a broad array of disciplines within and outside of psychology proper. The scope of clinical psychology encompasses all ages, multiple diversities and varied systems.

729 BOYLSTON ST, Boston, MA 02116

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Other Providers at the Same Location NPPES 13

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MS. MARGARET MARTHA MAGRAW LICSW

Social Worker (Clinical)

729 BOYLSTON ST, 4TH FLOOR
BOSTON, MA 02116

Suffolk County (617) 795-1995

CORRINE MAHONEY PH.D.

Psychologist

729 BOYLSTON ST
BOSTON, MA 02116

Suffolk County (617) 800-9610

RISHEEN BROWN LICSW

Social Worker (Clinical)

729 BOYLSTON ST, 4TH FLOOR
BOSTON, MA 02116

Suffolk County (917) 300-9309

SOPHIE HOLLISTER ATWOOD

Counselor (Mental Health)

729 BOYLSTON ST
BOSTON, MA 02116

Suffolk County (617) 237-6405

DR. SARAH LOWE SAMUELSON PSY.D.

Psychologist (Clinical)

729 BOYLSTON ST
BOSTON, MA 02116

Suffolk County (617) 221-3044

MARGARET POTERBA LICSW

Social Worker (Clinical)

729 BOYLSTON ST
BOSTON, MA 02116

Suffolk County (617) 800-9610

DR. MARIE-CHRISTINE ANDRE PH.D.

Psychologist (Clinical)

729 BOYLSTON ST
BOSTON, MA 02116

Suffolk County (617) 651-5513

DAVID J. BRENNAN MSW, LICSW

Social Worker (Clinical)

729 BOYLSTON ST, FOURTH FLOOR
BOSTON, MA 02116

Suffolk County (617) 524-1233

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Michael O'brien's NPI number?

The NPI number for Michael O'brien is 1790293827. It was assigned to this individual provider in the NPPES registry on January 10, 2018.

Where is Michael O'brien located?

Michael O'brien practices at 729 Boylston St, Boston, MA 02116. The listed phone number is (617) 286-4945.

What is Michael O'brien's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.

When was this NPI record last updated?

The NPPES record for Michael O'brien was last updated on June 13, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.