MassHealth Provider Online Service Center: Manage Your Business With MassHealth

MassHealth Provider Online Service Center (POSC) is a registered and secure web portal of the Commonwealth of Massachusetts and specially designed for MassHealth service providers, business associates, and non-profit organizations. MassHealth Provider Online Service Center (POSC) provides online access for health-related services and accounts online. The online service portal helps providers in handling and maintaining the records of patients or registered members. The services offered through the MassHealth Online Service Center include:

Enrollment Services


Interested individuals or providers of MassHealth can enroll themselves through the online service portal that is mentioned on the given path. After enrolment, providers can avail a valid user ID and password through they can get access to all online services and facilities offered by MassHealth.

Update Services/Facilities


MassHealth Provider Online Service Center is only the portal through which MassHealth providers can update personal information like address, phone number, email address and other identification documents.

Health & Human Services


MassHealth offers a wide range of health and life related insurance programs for families, individuals, kids and special persons. At the MassHealth Provider Online Service Center, applicants can claim or report service plans and benefits.

Online Service Support


Providers of MassHealth can avail 24/7 help regarding all services and programs offered by the organization including claims, transactions, codes, eligibilty issues, program incentives, membership benefits, service authorizations, forgotten user ID's, passwords and many others by just making a call at 1-800-841-2900

Connect With MassHealth Provider Customer Service Center

Service Center Number


For general issues, claims, service requests and program incentives, dial 1-800-841-2900 or fax at (617) 988-8974.

Service Center Location


MassHealth Provider customer service office is addressed at 100 Hancock St., 6th Floor, Quincy, MA 02171.

TTY/TDD Support


Special individuals/providers can reach out to the service office through the given helpline number (800) 497-4648

Health and Human Services


For all MassHealth and human services, call at (617) 573-1600 or dial 1-800-841-2900

Email Support


To communicate with the service team of POSC (Provider Online Service Center) through emails, send queries or requests at providersupport@mahealth.net. All emails are being reviewed on regular basis and reverted back within the business days and hours.

Service Hours


The service office is open during Monday to Friday between: 8:00 a.m. to 5:00 p.m.

MassHealth ORP Providers Customer Service Center

  • Customer Service Support: (800) 841-2900
  • Nonbilling Pharmacist Application Monday to Friday between: 8:00 a.m. to 5:00 p.m.
  • MassHealth Dental Program Customer Service: (800) 207-5019
  • ORP Providers Email: providersupport@mahealth.net
  • MassHealth Credentialing: 1-800-233-1468 / MassHealthEnrollment&Credentialing@dentaquest.com

MassHealth LTSS Providers Customer Service Center

  • Visit/Write at: MassHealth LTSS, PO Box 159108, Boston, MA 02215
  • General Service Support: (844) 368-5184
  • Service Authorization Helpline: (800) 862-8341
  • Monday through Friday between: 8:00 a.m. to 6:00 p.m. ET
  • Email Support: support@masshealthltss.com
  • Fax support: (888) 832-3006

MassHealth Provider Publications Customer Service Center

  • Service Address: Attn: MassHealth Forms Distribution, P.O. Box 121205, Boston, MA 02112-1205
  • Main Customer Service Number: (800) 841-2900
  • Service Monday to Friday between: 8:00 a.m. to 5:00 p.m.
  • TTY Helpline: (800) 497-4648
  • Email Service Support: publications@mahealth.net
  • Fax help: (617) 988-8973

MassHealth Service Centers/Locations Near Me

Harbor Health Services Inc


1135 Morton St, Mattapan, MA 02126
+16175332300
Monday to Friday between 8:00 a.m. to 5:00 p.m.
Saturday: Closed
Sunday: Closed

Home Health Care


169 Liberty St, Middleton, MA 01949
+19784061327

Partners Health Care


5 Wally Krueger Way # 4, Bridgewater, MA 02324
+18447444200
Open on all days 24hrs

University Health Services


150 Infirmary Way, Amherst, MA 01003
+14135775000
Monday to Friday: 9:00 a.m. to 5:00 p.m.
Saturday: Closed
Sunday: Closed

Ace Medical Services


90 Madison St, Worcester, MA 01608
+15087923800

Home Care Assistance


445 Washington St, Wellesley, MA 02482
+17812390060
Open on all days 24hrs

Athena Home Health of Massachusetts


10 Riverside Dr, Lakeville, MA 02347
+15086735500
Open on all days 24hrs