Mary E O'brien

Mental Health Counselor


  1040 Waltham St, Lexington
     Massachusetts, 02421-8033
  781-761-5089    Maps & Directions
Mary E O'brien is a Lexington, Massachusetts based counselor who is specialized as Mental Health Counselor. Her current practice location is 1040 Waltham St, Lexington. Patients can book an appointment with her at 781-761-5089.
Mary E O'brien is a licensed professional who helps individuals, couples, and families manage and overcome emotional, psychological, and behavioral challenges. She assess clients’ mental health conditions and develop personalized treatment plans to provide therapy for a range of mental health issues, including anxiety, depression, trauma, relationship issues, stress, grief, and life transitions.
Complete Profile:
Mary E O'brien speciality, credentials, practice address, contact phone number and fax are as below. Patients can directly walk in or can call on the below given phone number for appointment.
Name: Mary E O'brien
Specialization: Mental Health Counselor
Gender:Female
Accepts Medicare Assignment:No
Practice Address:1040 Waltham St, Lexington,
Massachusetts, 02421-8033
Phone:781-761-5089
Professional Identification Codes:
NPI number stands for National Provider Identifier which is a unique 10-digit identification number issued to health care providers in the United States by the Centers for Medicare and Medicaid Services (CMS). NPI details are as mentioned below.
NPI Number: 1275839433
NPI Enumeration Date: 07 Feb, 2011
NPI Last Update On: 13 Jun, 2016

Other Medical Identifiers:
Other legacy medical identifiers associated with Mary E O'brien such as Medicaid, Medicare PIN, NSC, UPIN etc. are mentioned as below.
IdentifierTypeStateIssuer
M18633OtherMassachusettsBCBS
0000023532OtherMassachusettsBMC
042611055OtherMassachusettsTAX ID
1004745OtherMassachusettsNHP
1004745OtherMassachusettsFALLON
1303287OtherMassachusettsMBHP
99618201OtherMassachusettsNETWORK HEALTH
Business Mailing Address:
Business mailing address can be used for mailing purpose only, for visiting purpose patients need to refer above mentioned address.
Address: 1040 Waltham St,
Lexington, Massachusetts
Zip: 02421-8033
Patients can reach Mary E O'brien at 1040 Waltham St, Lexington, Massachusetts or can call to book an appointment on 781-761-5089.
*Data of this site is collected from Medicare & Medicaid Services (CMS) and NPPES. Last updated on 09 June, 2025.

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