Fax for Therapists: What Mental Health Professionals Still Fax

Why Therapists Still Fax (It Is Not by Choice)

Mental health professionals do not fax because they want to. They fax because the systems around them require it. Insurance companies accept prior authorization forms by fax. Referring physicians expect referral letters by fax. Hospitals and clinics request records by fax. The electronic health record (EHR) systems at larger organizations often have fax built into their intake workflows.

Solo practitioners and small group practices feel this the most. You do not have an IT department or a medical records team. You are the therapist, the office manager, and the fax operator all at once. When an insurance company asks you to fax a treatment plan for authorization, you cannot tell them to check their email instead.

The shift to telehealth made this even more obvious. Therapists who went fully virtual still needed to fax documents to insurers and referring providers. A physical fax machine does not fit into a home office telehealth setup. Online fax does.

What Therapists Actually Send by Fax

Referrals. When you refer a client to a psychiatrist, another therapist, or a primary care provider, the referral letter typically goes by fax. The receiving provider needs it in their system, and fax feeds directly into most EHR intake queues.

Prior authorizations. Insurance companies require prior authorization for ongoing therapy sessions, especially after the initial assessment period. You fill out the form, attach a treatment summary, and fax it to the insurer. The approval (or denial) often comes back by fax too.

Superbills and insurance claims. If you are out-of-network, your clients submit superbills for reimbursement. Some clients ask you to fax the superbill directly to their insurance company. In-network therapists fax claim corrections and supporting documentation when electronic claims are rejected.

Records requests. When a client transfers to another provider, or when a court, attorney, or disability evaluator requests records, the transfer often happens by fax. A signed release of information form plus the relevant records, faxed with a HIPAA-compliant cover page.

HIPAA Compliance Is Not Optional

Every fax you send as a therapist contains protected health information (PHI). Client names, diagnoses, treatment plans, session notes: all of it falls under HIPAA. Using a fax service that is not HIPAA compliant puts you at risk of fines that start at $100 per violation and can reach $1.5 million per year.

HIPAA compliance for a fax service comes down to three requirements. The service must sign a Business Associate Agreement (BAA) with you. Fax data must be encrypted during transmission. And the service should not store your documents longer than needed for delivery.

FaxDrop uses Sinch as its fax carrier. Sinch provides a BAA and transmits faxes over encrypted channels. Documents are not retained after delivery confirmation. For a solo therapist handling sensitive clinical information, this is the baseline. Do not settle for less. Our dedicated HIPAA fax compliance page explains the technical details.

The Solo Practice Problem

Large group practices and hospital-affiliated clinics have fax infrastructure built into their systems. Their EHR handles outbound faxes. Their admin staff manages the machine. Solo practitioners and small practices do not have that luxury.

A physical fax machine costs $100 to $300 upfront. A dedicated phone line costs $20 to $50 per month. Toner and paper add up. And the machine sits in your office collecting dust between faxes, taking up space that could hold literally anything more useful.

For telehealth therapists, the math is even simpler. You cannot plug a fax machine into a Zoom call. An online fax service lets you send and receive faxes from any browser, whether you are at home, in a coworking space, or between sessions at a coffee shop.

How to Fax from Your Therapy Practice

The process takes about 90 seconds. Upload your document (PDF, image, or Word file), enter the recipient fax number, add a cover page with the HIPAA confidentiality notice, and send. You get a delivery confirmation by email so you have a record for your files. That fax confirmation page is your proof of delivery when an insurer or referring provider asks whether records were sent.

If you fax occasionally (a few referrals per month, the odd prior authorization), a pay-per-fax model makes sense. No monthly subscription, no commitment. Look for services that charge per fax rather than per page, so a multi-page referral packet does not cost more than a single-page form. If your practice faxes regularly, a subscription tier brings the cost down and gives you a predictable monthly expense.

If you use a practice management system like SimplePractice, TherapyNotes, or Jane, check whether it supports fax integration through an API. Automating outbound faxes for referrals and prior authorizations saves time you could spend with clients.

Common Fax Recipients for Therapists

Most therapists fax to the same types of recipients repeatedly: insurance companies (prior authorizations, claims), referring physicians (referral letters, treatment updates), psychiatrists (medication coordination), other therapists (records transfers), and occasionally courts or attorneys (subpoenaed records with proper release forms). Therapists who coordinate medication management with pharmacies also find themselves faxing prescription-related documentation regularly.

If you need to fax government agencies for disability evaluations or other purposes, check our guides for Social Security and IRS fax numbers. For tips on handling patient records securely, see our guide on how to fax medical records.