Start with the verified admissions route
Review MVBH admissions for the admissions route, then contact MVBH to confirm what information applies to current provider coordination. The supplied facts support a direct admissions conversation, but they do not establish a standard required-information list.
The evidence gives one direct starting point: call 978-233-9597 for a confidential conversation about starting treatment at Merrimack Valley Behavioral Health. It does not provide a universal coordination checklist or specify documents, forms, records, deadlines, or submission methods.
Prepare for the call by identifying the MVBH program being discussed and the current provider involved. Ask MVBH to name each requested item and explain who should send it. Also confirm the intended purpose and submission method. These questions separate verified instructions from assumptions about what coordination normally involves.