Mental Health Therapist

Ms. Claire Coassin Sumner, BCBA

1040 Waltham St, Lexington, Massachusetts, 02421-8033

About Ms. Claire Coassin Sumner

Ms. Claire Coassin Sumner is a therapist based in Lexington, Massachusetts who is specialized in Mental Health Counselor. Her current practice location is 1040 Waltham St, Lexington. Patients can reach her at 781-761-5077. Ms. Claire Coassin Sumner is BCBA in Mental Health Counselor and her NPI number (Unique professional ID assigned by NPPES) is 1588967616.

Ms. Claire Coassin Sumner 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.

Practice Information

Ms. Claire Coassin Sumner speciality, credentials, practice address, contact phone number and fax are as below. Patients can call on the below given phone number for appointment.

Provider Name Ms. Claire Coassin Sumner
Specialization Mental Health Counselor
Credentials BCBA
Gender Female
Practice Address: 1040 Waltham St,
Lexington, MA - 02421-8033

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 Number1588967616
NPI Enumeration Date: 12 Dec, 2010
NPI Last Update On: 12 Dec, 2010

Medical Licenses:

Healthcare professionals can hold one or more medical licenses for different specialities in the same state or different states. Related medical licenses for Ms. Claire Coassin Sumner are as mentioned below.

License NumberSpecializationStateStatus
Mental Health Counselor MassachusettsPrimary

Other Medical Identifiers

Other legacy medical identifiers associated with Ms. Claire Coassin Sumner such as Medicaid, Medicare PIN, NSC, UPIN etc. are mentioned as below.
IdentifierTypeStateIssuer
042611055OtherMassachusettsTAX ID
1004745OtherMassachusettsNHP
1303287OtherMassachusettsMBHP
M18633OtherMassachusettsBCBS
1303287MedicaidMassachusetts
99618201OtherMassachusettsNETWORK HEALTH
0000023532OtherMassachusettsBMC

Mailing Address

Business mailing address can be used for mailing purpose only, for visiting purpose patients need to refer above mentioned Practice address.

Ms. Claire Coassin Sumner
1040 Waltham St,
Lexington, MA - 02421-8033
Phone: 781-761-5077

Book an Appointment with Ms. Claire Coassin Sumner

To schedule an appointment, contact Ms. Claire Coassin Sumner at 1040 Waltham St, Lexington, Massachusetts or call on below stated phone number.

Call to Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about Ms. Claire Coassin Sumner:

Ms. Claire Coassin Sumner is a therapist specializing in Mental Health Counselor. She 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.

Yes, Ms. Claire Coassin Sumner is currently accepting new patients. To schedule an appointment, contact the office directly and schedule an appointment.

Ms. Claire Coassin Sumner practices at 1040 Waltham St, Lexington, Massachusetts, 02421-8033.

To schedule an appointment with Ms. Claire Coassin Sumner, please contact the office at 781-761-5077.

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**Data of this site is collected from Medicare & Medicaid Services (CMS) and NPPES. Last updated on 14 September, 2026.