MHSA Logo   



Middlesex Human Service Agency, Inc.
"Partners in Prevention, Intervention and Treatment"



Welcome to Middlesex Human Service Agency's Home Page. You will find information on each of the agency's programs here as well as news from staff and clients alike. From this main page you can access information about all of our programs as well as other types of information. As time goes by, we will be adding more information to this site.

Click here for the online obituary of former CEO, Peter Donovan

Please click here to make a donation to MHSA in Peter's memory.


Click here for the online obituary of Paul Sullivan,
founder of Answer House and Sullivan House.

Please click here to make a donation to MHSA in Paul's memory.

MHSA Events

Please click here to see our Events Page for information on both upcoming and past events.  Past events include pictures from the events!  To view our promotional video, click here.

To Get in Touch With MHSA, Inc.:

Telephone:  (781) 894-6110
Fax:  (781) 647-0412


Postal address
          50 Prospect Street, Waltham, MA 02453
Electronic mail
General Information:
To see a list of the main office staff, click here.

We hope you enjoy this video about the Middlesex Human Service Agency.
Some of the programs have changed since its taping, and we are in the process of creating a new one. Our current, ongoing programs are presented on this web site.

Check back soon for an updated video.

If you would like to donate to the Middlesex Human Service Agency, Inc.,
we greatly appreciate your generosity, and invite you to do so here with a credit or debit card through our online payment processor - PayPal.

PayPal - It's fast! It's safe! It's easy! Your payment is secure and you do not need to sign up for PayPal to use their service. (If you would like to see what the PayPal screen looks like, click here.) Thank you in advance for your help and support.

Send mail to with questions or comments about this web site.
Last modified: April 14, 2015