For Healthcare Professionals

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Clinician-to-Clinician consults, referrals, escalations, imaging reads, and urgent updates NOW — by text — without exposing PHI.

Join the Waitlist

For physicians, NPs, PAs, Dentists, specialists, PTs, Chiros and so much more.

9:41
Dr. Sarah Chen
Orthopedics
Hey, can you look at this MRI? 9:38 AM
Sure, send it over 9:39 AM
Knock Secure Card MRI Results — L4-L5
9:40 AM
Got it. Looks like a disc herniation. Let me call the patient. 9:41 AM
iPhone
9:41
Dr. James Park
Radiology
Critical finding on the chest CT 9:35 AM
Knock Secure Card CT Report — Chest
9:35 AM
Reviewing now. Thanks for the heads up. 9:37 AM
Confirmed. Alerting the team. 9:41 AM
Android

Text messaging now supports Medicine.

Critical results

Lab values, pathology findings, and imaging reads that can't wait.

Photos

Wound checks, rashes, and imaging snapshots shared instantly.

Knock keeps the speed. Adds the control.

Feels like texting.

Because it lives in your normal thread.

1 Start the message.
2 Send a secure card.
3 Tap to open.
4 Act immediately.
No portals No new inbox No behavior change

PHI stays protected.

The thread shows a clean message preview.
Sensitive content opens securely.

Encrypted
Authenticated
Audited
Dr. Chen Knock: Secure message waiting
Invisible to you.
Powerful underneath.

Never second guess
a message again.

See when it's opened

Real-time read receipts for every secure card.

Mark it urgent

Priority flags that cut through the noise.

Escalate critical results

Automated escalation when time matters most.

Track resolution

Know that every critical message gets handled.

Built by clinicians.
For real clinical workflows.

Founded by Layne Swenson and a practicing orthopedic spine surgeon who deal with this every day.

Primary Care
Specialists
Imaging
Urgent Care
Concierge Medicine
Independent Practices

This wasn't imagined.
It was experienced.

Early Access

Be among the first to:

  • Text PHI safely
  • Stay in your natural workflow
  • Never hesitate before hitting send

Limited pilot spots available.

When it matters, it should reach them.