How Your Psychiatrist and Primary Care Doctor Should Work Together

Your psychiatrist and primary care doctor should work from one shared medication list, agree on who prescribes and monitors what, share lab results instead of repeating them, and tell each other about changes. HIPAA allows them to share the information in your medical record with each other for treatment and care coordination without a separate written authorization; the main exception is a therapist's separately kept psychotherapy notes.

Coordination still often falls through the cracks, especially when clinicians use different health systems. This guide covers what the law allows, how to divide responsibilities, how medication reconciliation and lab monitoring should work, what the evidence says about collaborative care, and what you can do to make the two sides talk.

Why coordination matters

Mental and physical health overlap in ways that make a split approach risky:

• Medical conditions can cause or worsen psychiatric symptoms, from thyroid disease to sleep apnea; the guide to medical conditions to rule out before a psychiatric diagnosis lists the common ones.
• Psychiatric medications need physical monitoring, such as kidney and thyroid tests on lithium, weight and blood sugar on antipsychotics, and blood pressure on stimulants.
• Medications from different prescribers interact. In older adults, for example, the AGS Beers Criteria flags lithium combined with certain blood pressure medicines (ACE inhibitors, ARBs and ARNIs) or loop diuretics, and warfarin combined with SSRIs as clinically important interactions.
• Two prescribers can unknowingly stack sedating drugs, or prescribe the same class twice under different names.

None of these problems is solved by a better individual doctor. They are solved by information moving between doctors.

What HIPAA allows clinicians to share

HHS guidance states that HIPAA generally does not limit disclosures between health care providers for treatment, case management and care coordination, and that mental health information is treated, with few exceptions, the same as other health information.

This is general information, not legal advice. Two caveats. HHS notes that state law or professional standards may place additional limits on sharing mental health information. And "allowed" is not the same as "automatic": a practice may still ask you to sign a release before they send records, both for clarity and because the other office may request one. Signing a release that names each clinician, with their fax or portal details, removes most friction. The practice's HIPAA Notice of Privacy Practices explains how it handles health information.

You can also limit what you share. If there are parts of your history you do not want in your primary care chart, say so and ask how the practice handles that request. Your own access to your records is covered in requesting your mental health records.

Who does what: a practical division of labor

There is no single legal rule for splitting tasks. What matters is that it is explicit and written down.

The question of whether primary care or a psychiatrist should prescribe in the first place is covered in psychiatrist or primary care for your antidepressant. This guide assumes both are involved and focuses on how they connect.

Medication reconciliation: keeping one true list

Medication reconciliation means comparing everything a patient actually takes against what each clinician thinks they take, to avoid unintended inconsistencies when care moves between settings. The errors it is designed to catch include omitted medications, duplicated therapies and incorrect doses, which can lead to adverse drug events. The evidence that reconciliation alone improves patient outcomes is mixed, which is a reason to pair it with ongoing communication rather than treat it as a one-time form.

You are the person best placed to keep the list current. A good list includes:

• Every prescription, with dose, timing and prescriber
• Over-the-counter medicines, including sleep aids and antihistamines
• Supplements, herbal products and anything taken "as needed"
• Medications stopped in the past year and why
• Allergies and serious side effects
• Pharmacy name and phone number

Bring it, or the bottles, to every visit with either clinician, and ask each to confirm the list at the end of the appointment. The medication history guide has a template. Never stop or change a medication because the two lists disagree; call the prescriber to sort it out.

Labs: share results, avoid duplicate draws

Psychiatric medications often come with monitoring schedules, and primary care often orders the same tests for other reasons. Coordinating saves blood draws, cost and confusion. Agree on:

1. Who orders each recurring test and on what schedule.
2. Where results go: both clinicians, through a shared portal, fax or by you forwarding them.
3. Who acts on an abnormal result, and how quickly the other clinician hears about it.

Medication-specific schedules are explained in lithium blood level, kidney and thyroid monitoring and antipsychotic metabolic monitoring. For ADHD medications, blood pressure and heart rate checks often happen at primary care visits anyway, so ask that readings be shared with the prescriber; ADHD medication and heart monitoring explains what to track. Home blood pressure readings, written down with dates, are useful to both clinicians. When a test is ordered for an integrative or functional purpose, ask both clinicians what decision the result will change, so that the primary care doctor is not surprised by unfamiliar results.

Collaborative care: what the evidence shows

The most studied form of coordination is the collaborative care model, in which a primary care team adds a behavioral health care manager and a psychiatric consultant who reviews cases regularly. In Medicare's version, the care manager follows patients with validated rating scales and a registry, the psychiatric consultant and care manager review the caseload weekly, and the plan changes when patients are not improving, including referral to specialty psychiatric care.

The evidence is strong for depression and anxiety:

• A Cochrane review of 79 randomized trials with 24,308 participants found that collaborative care improved depression outcomes more than usual care in the short, medium and long term, and improved anxiety outcomes as well; the benefit for depression was not shown in the very long term.
• An earlier meta-analysis of 37 randomized trials with 12,355 primary care patients with depression found improvement at 6 months and evidence of longer-term benefit for up to 5 years.

Medicare pays for this model through specific monthly care management codes, which require an initiating visit with the billing practitioner. If your primary care practice offers collaborative care, it can be an excellent option for depression or anxiety that is not responding to a first treatment. If it does not, the same principles apply to an outside psychiatrist and your doctor: measure symptoms, share results and adjust when progress stalls.

What a useful coordination note contains

Clinicians are busy, and long letters go unread. A short, structured note sent after an evaluation or a significant change is what actually helps. It usually covers:

• The working diagnosis and the main symptoms being treated
• Current psychiatric medications with doses, and what changed and why
• Monitoring needed, who will order it and when it is due
• Specific requests, such as "please check thyroid function with the next routine labs" or "please avoid adding another sedating medication without a call"
• Safety concerns, if any, and how to reach the sender quickly

You can ask to see or receive a copy of what is sent, which also helps you keep your own list accurate.

Moments that need tighter coordination

A worked example

Imagine a person in their fifties taking an antidepressant prescribed by a psychiatrist and a blood pressure medicine prescribed by primary care. They start feeling dizzy and tired. Without coordination, each doctor may assume the other's medication is the cause, or neither hears about it. With coordination, the patient messages both, primary care checks blood pressure and basic labs, the results go to the psychiatrist the same week, and the two agree on one change at a time, so it is clear what helped. That is the whole idea: one list, shared results, one plan.

Common mistakes

• Assuming the electronic record shares itself; separate health systems often do not exchange notes automatically.
• Leaving supplements and over-the-counter sleep aids off the list.
• Letting two clinicians adjust related medications in the same week.
• Repeating labs because results were never forwarded.
• Waiting for the annual physical to mention a psychiatric medication change.

What good coordination looks like

What you can do to make it happen

1. At your first psychiatric visit, give your primary care doctor's name, practice, phone and fax, and sign a release if asked.
2. Ask the psychiatrist to send a brief summary after the evaluation and after major medication changes.
3. Send your recent labs, ECG and medical problem list to the psychiatrist before the first visit.
4. Tell your primary care doctor about every psychiatric medication, even if you feel awkward about it.
5. Use one pharmacy when you can, so interaction checks see everything.
6. If you also see a therapist, include them; the guide to keeping your therapist with a new psychiatrist covers three-way coordination.
7. For an older parent with several prescribers, appoint one family member to hold the list; see psychiatric care for an aging parent.

How this practice works with primary care

The practice's ongoing care combines psychiatric evaluation and medication management with psychotherapy, coaching, lab testing and nutrition and lifestyle psychiatry, so many coordination questions start inside one team. If labs are part of your plan, the practice's lab testing page describes what it offers, and lab costs are separate from visit fees; sending recent results from your primary care doctor can help avoid repeats. The free discovery call is a good time to ask how the team communicates with outside physicians. For other ways to set up care, see the guide to choosing psychiatric care.

Frequently asked questions

Do I have to sign a release for my psychiatrist to talk to my primary care doctor?

HIPAA permits clinicians to share medical record information with each other for treatment and care coordination without a written authorization, except separately kept psychotherapy notes. State law, professional standards or office policy may still lead a practice to ask for your signed release, and providing one usually speeds things up.

Will my primary care doctor see my therapy session details?

Not psychotherapy notes kept separately from the medical record; those need your authorization to be shared. Summaries such as diagnosis, medications, treatment plan and progress can be shared for treatment. Ask each clinician what they send.

Who should order my lithium or antipsychotic blood tests?

Usually the prescribing psychiatrist, but either clinician can, as long as the results reach both and it is clear who acts on an abnormal value. Agree on this explicitly so tests are neither missed nor duplicated.

What is collaborative care, and how do I get it?

It is a model in which a primary care practice adds a behavioral health care manager and a consulting psychiatrist who review patients regularly and adjust treatment. Ask your primary care office whether it offers collaborative or integrated behavioral health care.

What if my two doctors disagree about a medication?

Ask them to talk to each other directly, and do not change anything on your own in the meantime. A brief clinician-to-clinician call usually resolves it faster than relaying messages through you.

Should my primary care doctor know about supplements my psychiatrist recommended?

Yes. Supplements can interact with prescription drugs and affect lab results. Put them on the same medication list you share with every clinician and your pharmacy.

Sources

1. HIPAA Privacy Rule and Sharing Information Related to Mental Health. U.S. Department of Health and Human Services, Office for Civil Rights, 2026. hhs.gov
2. Fact Sheet: 42 CFR Part 2 Final Rule. U.S. Department of Health and Human Services, Office for Civil Rights, 2026. hhs.gov
3. Medication Reconciliation (Patient Safety Primer). Agency for Healthcare Research and Quality, PSNet, 2024. psnet.ahrq.gov
4. Collaborative care for depression and anxiety problems. Cochrane Database of Systematic Reviews (Archer et al., PubMed 23076925), 2012. pubmed.ncbi.nlm.nih.gov
5. Collaborative care for depression: a cumulative meta-analysis and review of longer-term outcomes. Archives of Internal Medicine (Gilbody et al., PubMed 17130383), 2006. pubmed.ncbi.nlm.nih.gov
6. Behavioral Health Integration Services (MLN909432). Centers for Medicare & Medicaid Services, Medicare Learning Network, 2026. cms.gov
7. American Geriatrics Society 2023 updated AGS Beers Criteria for potentially inappropriate medication use in older adults. Journal of the American Geriatrics Society (PubMed 37139824), 2023. pubmed.ncbi.nlm.nih.gov

Educational information, not medical, tax or legal advice. Decisions about diagnosis, medication and treatment belong with a clinician who knows your history.