Massachusetts Guardianship Medical Certificate: MPC 400 vs MPC 402 Explained

Every guardianship petition in Massachusetts requires clinical evidence that the proposed ward lacks the capacity to make decisions for themselves. The court does not take the petitioner's word for it — a licensed clinician must evaluate the individual and document their findings on a specific court form.

Which form you need depends entirely on the diagnosis. Use the wrong one and the court rejects the petition package before it reaches a judge.

MPC 400: The Medical Certificate

When it is required: For any incapacitating condition other than intellectual disability — developmental disabilities without an intellectual disability diagnosis, traumatic brain injury, degenerative neurological conditions, severe mental illness, and dementia.

Who completes it: A single qualified clinician. The form accepts signatures from a licensed physician, licensed psychologist, certified psychiatric nurse clinical specialist, or nurse practitioner.

The timing trap: The clinical examination must have occurred within 30 days of the date the court enters the guardianship decree — not 30 days of filing, not 30 days of the hearing, but 30 days of the final judicial order.

This 30-day window is the most common timing failure in Massachusetts guardianship cases. Here is how it breaks:

1. You schedule the clinical exam.
2. You file the petition with the signed MPC 400.
3. The court processes the filing and issues a citation; timing varies by division.
4. You serve notice on all interested parties.
5. The hearing is scheduled according to the division's calendar.
6. By the time the judge enters the decree, the 30-day window has closed.

The safer approach is to coordinate the clinical exam with the filing and court calendar so the evaluation date falls within 30 days before the anticipated decree date. This requires coordinating with the clinician's schedule and having a reasonable estimate of the court's timeline in your division.

MPC 402: The Clinical Team Report

When it is required: When the proposed ward's incapacity stems from an intellectual disability. This is the only qualifying diagnosis — not "developmental disability" broadly, but specifically intellectual disability as defined by clinical diagnostic criteria.

Who completes it: Three distinct licensed professionals, each of whom must personally evaluate the individual:

1. A licensed psychologist
2. A registered physician
3. A licensed social worker

All three must be experienced in evaluating intellectual disabilities. Each completes their own narrative section of the form and signs separately.

The timing window: All evaluations and signatures are valid for 180 days from the earliest examination date. This is dramatically more forgiving than the MPC 400's 30-day window. With 180 days, families can schedule the three evaluations over several weeks without worrying about court processing delays.

Choosing the Wrong Form

The dividing line is the specific clinical diagnosis, not the severity of the disability. An adult with severe autism who also carries an intellectual disability diagnosis needs the MPC 402. An adult with severe autism who does not have an intellectual disability diagnosis needs the MPC 400.

If you are unsure which applies, check the clinical records for a formal diagnosis of intellectual disability. If that diagnosis is present, use MPC 402. If the condition is classified differently — autism spectrum disorder without intellectual disability, traumatic brain injury, schizophrenia — use MPC 400.

Filing the wrong form delays the entire proceeding. The court will return the petition package and require resubmission with the correct form, meaning a new clinical evaluation with different requirements and a different timing window.

Coordinating the MPC 402 Team

The three-clinician requirement for the MPC 402 creates a logistical challenge. You need three separate professionals, each of whom must personally examine the individual, and all three exams must fall within a 180-day window.

Practical strategies that Massachusetts families use:

• Leverage the existing care team. If your child has a psychologist, primary care physician, and DDS social worker who already know them, those professionals can often complete the MPC 402 based on a targeted evaluation appointment rather than a full intake assessment.
• Ask DDS for coordination. The Department of Developmental Services works with many families going through the guardianship process. DDS service coordinators can sometimes connect families with professionals who regularly complete MPC 402 evaluations.
• Schedule strategically. Start with the professional who has the least scheduling availability. Once that appointment is locked in, schedule the other two within a few weeks. The 180-day clock starts from the earliest exam, so front-loading the hardest-to-book clinician gives you maximum flexibility.

What the Forms Actually Ask

Both forms require the evaluating clinician to address:

• The individual's diagnosis and its functional impact
• Whether the individual can receive and evaluate information relevant to decisions about their personal welfare
• Whether the individual can make or communicate decisions
• Whether less restrictive alternatives (health care proxy, power of attorney, SDM) are sufficient
• A recommendation for limited vs. plenary guardianship

The MPC 402 additionally requires each clinician to address the individual's intellectual functioning, adaptive behavior, and the relationship between these domains and their decision-making capacity.

Judges read these forms carefully. A clinician who checks boxes without providing narrative explanation gives the judge nothing to work with. The strongest evaluations include specific examples of the individual's functional limitations and explicit statements about why less restrictive alternatives were considered and found insufficient.

The Hidden Connection to Rogers Authority

If your child takes or may need antipsychotic medication, the clinical evidence in the MPC 400 or MPC 402 is separate from the Rogers authority process. Rogers requires its own clinical form — MPC 800 (Clinician's Affidavit as to Competency and Treatment) — with a detailed treatment plan. But the same clinician who completes the MPC 400 or MPC 402 can also prepare the MPC 800, streamlining the process if you file for Rogers authority at the same time as the guardianship petition.

The Massachusetts Adult Guardianship & Alternatives Guide includes a clinical form checklist and timeline planner that maps the MPC 400's 30-day and MPC 402's 180-day windows against your county's typical processing times.

See more Massachusetts guides →