By Hanson Webb · Licensed MA Notary · Updated April 28, 2026 · 6 min readHow to Notarize a Healthcare Proxy in Massachusetts
Massachusetts requires two adult witnesses for a healthcare proxy under M.G.L. c.201D. Notarization is not required by state law but is strongly recommended for hospital, bank and out-of-state acceptance. Mobile notary services across Boston, Cambridge, Lowell, Andover and Worcester handle the notarization in one visit; you arrange the witnesses.
A Massachusetts healthcare proxy names a person who will make medical decisions for you if you become unable to communicate them yourself. Without one, your family may face delays, court proceedings or disagreement at the worst possible moment. The proxy is one of the most important documents adults can execute and remarkably few do.
This guide explains exactly what Massachusetts law requires under M.G.L. c.201D, why most attorneys recommend notarization even though it is technically optional and how to complete the process for residents of Greater Boston, the Merrimack Valley and Central Massachusetts.
What a Healthcare Proxy Authorizes
Treatment Decisions
Consent to or refuse medical procedures, surgery, hospitalization and discharge planning.
Medication Choices
Authorize or decline medications, pain management plans and prescription decisions.
Specialist Referrals
Approve specialist consultations, second opinions and treatment provider selection.
Care Setting
Choose between hospital, nursing home, hospice or in-home care arrangements.
Records Access
Review medical records, talk with physicians and coordinate care across providers.
End-of-Life Decisions
Make decisions about life-sustaining treatment in line with your stated wishes.
What Massachusetts Law Requires Under M.G.L. c.201D
The Massachusetts Health Care Proxy law sets specific execution requirements. Get any one wrong and the proxy is invalid.
- Principal must be at least 18. Under 18 cannot execute a healthcare proxy in Massachusetts.
- Principal must have capacity at signing. Cannot execute while heavily medicated, unconscious or with advanced dementia.
- Two adult witnesses present at the same time. Both witnesses must watch the principal sign and then sign themselves.
- Witnesses cannot be the named agent. The person being authorized cannot also serve as a witness.
- Witnesses must be 18 or older. No minor witnesses.
- Notary signature recommended but not required. Witnesses alone satisfy state law.
Family members often serve as witnesses thinking they help. In Massachusetts, witnesses are not legally barred from being family members, but for clarity we recommend independent witnesses (neighbors, coworkers, hospital staff). Independent witnesses are harder to challenge later if the proxy is contested.
Healthcare Proxy vs Power of Attorney
Healthcare Proxy
Power of Attorney
Most adults need both. The healthcare proxy covers medical decisions. The power of attorney covers financial and legal matters. The named agents may be the same person or different people. Many Massachusetts families assign the spouse as healthcare proxy and an adult child as financial power of attorney.
Why Notarize a Healthcare Proxy Even Though It Is Not Required
Massachusetts state law accepts a witnessed healthcare proxy. So why notarize?
- Hospital acceptance. Some Massachusetts hospitals and out-of-state hospitals refuse non-notarized proxies. Notarization eliminates the dispute.
- Out-of-state recognition. If the principal is hospitalized in another state, that state may have its own witness rules. A notarized proxy is more universally accepted.
- Bank and insurance access. Banks and insurance companies sometimes need to verify healthcare proxy authority. Notary signature streamlines that.
- Apostille for international use. Massachusetts residents who travel abroad or live overseas part-time benefit from apostille on the proxy. Apostille requires notarization.
- Legal challenges. If the proxy is contested in court, notarization adds an additional layer of verification difficult to dispute.
The Healthcare Proxy Signing Process
Step-by-step at the appointment
Hospital Bedside Healthcare Proxy Signings
Healthcare proxy signings frequently happen in hospitals, nursing homes and rehab facilities. Hanson and the team at HireMobileNotary.com handle these signings weekly across Boston, Cambridge, Lowell, Andover and Worcester.
Hospital signings have specific considerations:
- Capacity assessment. The principal must be alert, cognizant and able to communicate consent. Heavy medication or recent sedation requires postponing.
- Witnesses. Hospital staff often serve as witnesses if family members are not available or are barred. The notary does not provide witnesses, so confirm who will witness before the visit.
- Privacy. The signing happens at the bedside in a private moment, with the named agent often present in person or by phone.
- Timing. Mid-morning is typically best, after medications take effect and before afternoon rest periods.
- Distribution. Notarized originals delivered to the patient, agent and hospital records team before leaving.
If your family member is in a Boston-area hospital and you are coordinating a healthcare proxy signing, do not wait for a crisis. Schedule the signing while your loved one is alert and the document is needed. Trying to push through a signing on a heavily medicated or confused patient creates legal exposure and could be challenged in court later.
When the Healthcare Proxy Activates
The proxy becomes effective only when a treating physician determines that the principal is unable to make or communicate healthcare decisions. While the principal retains capacity, they make their own decisions and the named agent has no authority.
If capacity is later restored, the proxy goes dormant again until a future incapacity event. The principal can revoke the proxy at any time while they have capacity, in writing or orally.
Healthcare Proxy Signing Today?
Mobile notary across Greater Boston, Lowell, Cambridge, Andover and Worcester. Hospital, nursing home or in-home signings; you arrange any required witnesses.
Frequently Asked Questions
Does a Massachusetts healthcare proxy need to be notarized?
State law requires two witnesses but not a notary. Notarization is recommended for hospital and out-of-state acceptance.
Who can witness a Massachusetts healthcare proxy?
Two adults age 18 or older. Witnesses cannot be the named healthcare agent. Independent witnesses (neighbors, coworkers, hospital staff) are preferred over family members.
What is the difference between a healthcare proxy and a power of attorney?
Healthcare proxy authorizes medical decisions under M.G.L. c.201D. Power of attorney authorizes financial and legal matters under M.G.L. c.190B Article V. Separate documents.
When does a Massachusetts healthcare proxy take effect?
Only when a physician determines the principal is unable to make or communicate healthcare decisions. The principal retains decision-making while capable.
Can a hospital notary visit my elderly parent for healthcare proxy signing?
Yes. Mobile notaries in Boston, Cambridge, Lowell, Andover and Worcester regularly visit hospitals and nursing homes for healthcare proxy signings.
Should I have both a healthcare proxy and a living will?
Yes. The healthcare proxy names someone to decide. The living will records your specific treatment preferences. Massachusetts attorneys recommend executing both together.
Related Massachusetts Notary Resources
- Elder Law Notary Services Massachusetts
- Power of Attorney in Massachusetts
- Notarizing Wills and Trusts
- Hospital Notary Service
- Nursing Home Notary Service
