In 2025, understanding the correct masshealth address for claims, enrollment, and correspondence has never been more crucial. With updated payer rules, revised HCPCS/CPT codes, and streamlined remittance guidance, accuracy in mailing can prevent delays and denials. In this guide, you’ll find all current addresses, mailing tips, and how to stay compliant.
📬 Why the masshealth address matters in 2025
Reliable mailing addresses help you:
- Ensure timely claims and forms reach the correct department.
- Avoid claim denials for misrouting or late submission.
- Stay compliant with MassHealth’s updated correspondence workflows.
Current MassHealth addresses by purpose
MassHealth uses separate P.O. boxes and physical locations depending on service type.
Claims and provider enrollment
To submit enrollment updates or general provider questions: MassHealth Customer Service
Attn: Provider Enrollment & Credentialing
P.O. Box 278
Quincy, MA 02171
Claims to MassHealth (non-Pharmacy) use: MassHealth Customer Service Center
ATTN: Claims
P.O. Box 7
Quincy, MA 02171
Fax for claims correspondence: (617) 988‑8910 :contentReference[oaicite:1]{index=1}
Prior authorization requests
General PA questions can be mailed to: MassHealth Customer Service
P.O. Box 278
Quincy, MA 02171
For DME/Orthotic/Prior Authorization billing units, use PA hotline:
Phone: (800) 862‑8341 (Mon–Fri, 8 a.m.–5 p.m.) :contentReference[oaicite:2]{index=2}
Enrollment center physical locations
For in-person appointments or walk-ins at Enrollment Centers:
- Quincy, MA – 100 Hancock St, 1st Floor :contentReference[oaicite:3]{index=3}
- Charlestown – 529 Main St, Charlestown, MA 02129 :contentReference[oaicite:4]{index=4}
- Chelsea – 45 Spruce St, Chelsea, MA 02150 :contentReference[oaicite:5]{index=5}
- Springfield, Taunton, Tewksbury, Worcester (see MassHealth site) :contentReference[oaicite:6]{index=6}
2025 billing updates—what to know
MassHealth implemented key changes effective 2025:
- Retroactive HCPCS/CPT updates for DME and orthotics (Oct 2024 effective) :contentReference[oaicite:7]{index=7}
- DM exclusion: Medicare crossovers must be adjusted manually for ESRD and DME claims :contentReference[oaicite:8]{index=8}
- All PA, referrals now require valid referring NPI enrolled with MassHealth beginning Aug 1, 2025 :contentReference[oaicite:9]{index=9}
How to avoid mailing errors
- Double-check the P.O. box. Use P.O. Box 7 for claims and P.O. Box 278 for enrollment or PAs.
- Include provider number & NPI. Particularly for provider enrollment or PA letters, always add your provider number and NPI.
- Use certified mail. Track delivery to confirm receipt and avoid late filing rates.
- Update Physical Address. Ensure your office location is updated in MassHealth Provider Online Service Center (POSC). Incorrect DBA or mailing info can delay RMRPs or HCPCS notices :contentReference[oaicite:10]{index=10}.
Practical mailing workflow
- Determine purpose: claim, enrollment, or PA.
- Select correct address (PO Box 7 or 278).
- Attach provider info: NPI, provider number, contact email.
- Send via traceable method.
- Retain proof of mailing for 6+ years per audit requirements.
Resources & further reading
- MassHealth official site for updated forms and bulletins
- CMS 2025 official guidelines on HCPCS/CPT updates
- AAPC coding guidance for updated billing practices
- CMS1500ClaimBilling.com (you!) for mailing best practices :contentReference[oaicite:11]{index=11}
FAQ
Which P.O. box do I use for claims?
Use P.O. Box 7, Quincy, MA 02171 for non-pharmacy claims. For enrollment or PA, send to P.O. Box 278.
Can I fax provider enrollment?
MassHealth prefers mailed documents to P.O. Box 278. Check POSC for secure electronic uploads; faxing is not recommended unless specified in an enrollment notice.
Where do I go for enrollment help?
Visit your nearest Enrolment Center—e.g., 100 Hancock St, Quincy, MA—or contact provider services at (800) 841‑2900.
Conclusion
In 2025, precise handling of the masshealth address is a simple yet powerful way to minimize denials, speed reimbursements, and maintain compliance. By using the correct P.O. boxes, updating your provider details, and staying current with coding updates, your practice can operate more efficiently. For more mail‑handling tips and form guidance, keep exploring the content on ICD‑10 coding tips, common denial reasons, and provider POSC walkthroughs. Stay proactive—and mail smart!