The letters after a provider’s name — LCSW, PsyD, MD, PMHNP — tell you about their training and what they can do, but they rarely come with an explanation. This page sorts out who does what: who can diagnose, who can prescribe, and who provides therapy. The right provider depends on your teen’s needs, and what matters most is finding someone qualified, experienced with adolescents, and a good fit — not the prestige of the title.
Terms in this section
These are the professional roles and credentials you are most likely to encounter. A useful way to read them is by two questions: can this person prescribe medication, and can they diagnose? Therapists provide therapy; prescribers manage medication; some roles do both. Exact scopes of practice and title rules vary by state, so confirm credentials with the relevant state board.
- Child and adolescent psychiatrist (MD or DO)
- A medical doctor with additional specialty training in child and adolescent mental health. They can diagnose, prescribe and manage medication, and in some cases provide therapy. They are often involved in more complex or higher-acuity situations.
- Psychiatrist (MD or DO)
- A medical doctor specializing in mental health who can diagnose and prescribe. A general psychiatrist may or may not have specific child and adolescent training, which is worth asking about for a teen.
- Psychiatric-mental health nurse practitioner (PMHNP)
- An advanced-practice registered nurse specializing in mental health who can, in many states, diagnose and prescribe medication. Their independence or supervision requirements vary by state.
- Clinical psychologist (PhD or PsyD)
- A doctoral-level provider trained in assessment, diagnosis, and therapy. Psychologists conduct in-depth psychological testing and provide therapy; in most states they do not prescribe.
- Licensed clinical social worker (LCSW)
- A master’s-level clinician licensed to provide therapy and, depending on the state, to diagnose. Social workers also often help families navigate systems and resources.
- Licensed marriage and family therapist (LMFT)
- A master’s-level therapist trained to work with relationships and family systems, which can be especially relevant when family dynamics are part of the picture.
- Licensed professional counselor (LPC / LMHC)
- A master’s-level counselor licensed to provide therapy. Exact titles differ by state — for example, LPC, LPCC, or LMHC — but the role is broadly similar.
- School counselor / school psychologist
- Professionals based in schools who support students’ well-being and learning. They can be a helpful first point of contact and can connect families to evaluations and outside care, though their role differs from clinical treatment.
- Pediatrician (MD or DO)
- Your child’s primary medical doctor, often the first stop for mental health concerns. Pediatricians can screen, provide initial guidance, sometimes prescribe, and refer to specialists.
- Board certification
- An additional credential showing a physician has met a specialty board’s standards (for example, in child and adolescent psychiatry). It is separate from a license to practice.
- Pre-licensure / associate clinicians
- Clinicians who have completed graduate training and are accumulating supervised hours toward full licensure (titles like “associate” or “intern”). They work under a licensed supervisor and can provide good care, often at lower cost.
- Peer support specialist
- Someone with lived experience of mental health challenges, trained to offer support and encouragement. They complement clinical care rather than replace diagnosis or treatment.
How to use this glossary
Use these definitions to figure out which kind of provider fits your teen’s needs. As a rough guide: if medication may be part of the plan, you need a prescriber (a psychiatrist, PMHNP, or sometimes a pediatrician); if the need is therapy, a licensed therapist of several types may fit; and complex situations often involve a team. Many families start with their pediatrician for a referral.
Whoever you consider, it is reasonable to ask about their license and whether you can verify it, their experience with adolescents and your teen’s specific concern, their approach, and the practical details of availability and cost. Credentials set a floor for competence, but fit and experience with teens matter just as much.
Related sections
To understand the treatments these providers deliver, see treatments and modalities, and the settings they work in, see program types. Licensure and credentialing are covered further in legal and regulatory.
Sources
- American Academy of Child & Adolescent Psychiatry (AACAP) — resources on finding and choosing providers (aacap.org)
- American Psychological Association (APA) — information on psychologists and choosing a therapist (apa.org)
- National Alliance on Mental Illness (NAMI) — guide to mental health professionals (nami.org)
- American Academy of Pediatrics (AAP) — HealthyChildren.org guidance for families
- [Formal citations will be added at clinical review. See medical review.]