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

Margaret O'Brien, LMHC

Individual provider Mental Health Counselor · NPI 1891246518

Margaret O'Brien, LMHC is a Mental Health Counselor in Arlington, Massachusetts. Qualified in 2016, 10 years ago. Practices with Thrive Counseling LLC, a 1,188-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in Massachusetts.

Years since qualifying
10
Licensed in
MA
In the registry since
2016
Specialties on file
2
What do these letters mean?
LMHC — Licensed Mental Health Counselor
A licensed mental health counsellor; the title used in Florida, New York and Washington among others.

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Practice location Address checks out

406 Massachusetts Ave
Arlington, MA 02474-6700
Phone: (781) 488-8243
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 22 Pleasant St, Malden, MA 02148-5119 — (781) 851-2648

Specialties & licences

Mental Health Counselor (primary) Taxonomy 101YM0800X · Licence 11198 (MA)
Mental Health Counselor Taxonomy 101YM0800X · Licence LMHC11198 (MA)

Record details

NPI number1891246518
Entity typeIndividual (Type 1)
GenderFemale
Credentials LMHC
Sole proprietorYes
NPI enumeratedOctober 18, 2016
Last updated in NPPESJuly 19, 2024
Certification dateJuly 19, 2024

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyMENTAL HEALTH COUNSELOR
Medical schoolOTHER
Graduated 2016 (10 years in practice)
Group practice Thrive Counseling Llc — 1188 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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