LetterAgent
Mail physical letters by just asking your AI assistant.
Home > Guides > Why doctors still fax
Doctors still fax because their computer systems often cannot trade records directly, faxing fits privacy rules staff already trust, and a fax number reaches a specific office without a portal login. Habit plays a part, but the deeper cause is a patchwork of systems that were never built to talk to each other.
Most clinics bought their record systems at different times, from different vendors, and set them up for their own billing and charting needs first. Sharing records with an outside clinic was a later thought, not a founding feature. Two systems can both be electronic and still fail to exchange a referral, because they store the same fact in different fields, use different code lists, or require a paid interface that nobody set up. Fax sidesteps all of that: a human reads the page on the other end, whatever system printed it.
This is why the fax machine survives in the busiest parts of health care. Referrals, prior authorization forms, and lab orders move between organizations that have no shared portal and no shared vendor. The fax number is the one address every office already publishes and already monitors.
Fax has a long history under US health privacy rules, and staff training, cover sheets, and office routines grew up around it. A fax goes to a number the sender dialed, not to an inbox that might be shared, forwarded, or spoofed. Clinics also keep confirmation pages, which give staff a simple record that a send happened, with a time stamp and a page count. That paper trail fits how front-desk work is actually checked at the end of a day.
None of this means fax is flawless. A wrong number sends health information to a stranger, and a page left in a shared tray is visible to anyone walking past. But the risks are familiar, and staff know the countermeasures: verify the number, use a cover sheet, and pick up promptly.
| Reason doctors keep faxing | What it solves in practice |
|---|---|
| Systems do not connect | A fax reaches any office, regardless of its software vendor |
| No shared portal | No account setup, password reset, or portal training for the sender |
| Privacy habit | Staff already know cover sheets, number checks, and private tray routines |
| Confirmation page | A simple receipt showing the send time and page count |
| Universal address | Every clinic, pharmacy, and insurer already lists a fax number |
Replacements exist, but they need both sides to adopt the same standard at the same time, and health care has thousands of small practices with thin IT budgets. A large hospital can join a health information exchange; a two-doctor practice may not have the staff to maintain one. Direct secure messaging and patient portals help within one network, yet a referral to an outside specialist often falls back to fax because that is the channel the specialist's office actually checks.
Incentives matter too. Clinics are paid for care, not for upgrading record-sharing plumbing. Until a replacement is as universal, as cheap to run, and as simple to check as a fax confirmation page, offices keep the machine beside the printer.
Not necessarily. A clinic can run a modern record system and still fax outwards, because the offices it deals with demand it. Pharmacies, insurers, and labs still list fax numbers on their forms, and many of their intake queues are built around faxed pages. Judging a clinic by its fax machine misses the point: the bottleneck is between organizations, not inside one office.
Patients can help by confirming the receiving fax number, asking for a confirmation, and checking that the recipient actually got legible pages. If a fax fails twice, ask whether the office accepts a secure portal upload or a mailed copy as a backup.
Ready to fax it? Fax with LetterAgent: describe it to your AI assistant, approve the exact quoted price, and it is sent.
LetterAgent is a working name. Prices include print, postage, and our service fee. US prices in USD, Canadian prices in CAD (Canadian prices exclude applicable sales tax, added at checkout). Currently in private testing.
Need help? Ask your assistant: it can check a job's status any time. If it ever can't handle something: hello@getletteragent.com