Your shortcut to best-in-class patient communication

  • Cut your SMS costs by 50% or more
    We secure unprecedented rates so you can maximize communication while minimizing spend

  • Ignite your patient engagement
    Tap into the best HIPAA compliant text experience with read and response rates of over 90%

  • Give patients even more reasons to love you
    Consolidate communication across many tools into a unified, secure, streamlined conversation

What is a HIPAA compliant messaging API?

A HIPAA compliant messaging API lets healthcare software developers embed secure patient texting directly into their applications without building compliance infrastructure from scratch. Instead of spending months on encryption, audit logging, consent management, and BAA agreements, you connect to an API that handles all of it.

The difference between a generic SMS API and a HIPAA compliant messaging API matters. Twilio, for example, provides raw SMS transport. You’re responsible for HIPAA compliance, BAA agreements, message encryption, TCPA opt-in tracking, and audit trails. Build it wrong and you’re liable.

OhMD’s Special Delivery API is purpose-built for healthcare. HIPAA compliance, BAA, TCPA consent management, encryption, and audit logging are built into the infrastructure. You send a message. We handle everything between your API call and the patient’s phone.

How it works

1. Connect – Authenticate via REST API with your credentials. Sandbox environment available for testing before you go live.

2. Send and receive – Send HIPAA compliant SMS to patients using their phone number. Receive inbound messages via webhooks. Every message is encrypted in transit and at rest.

3. View and manage – Messages appear in OhMD’s unified inbox alongside calls, AI replies, and staff messages. Or manage everything through your own UI via the API.

That’s it. Three steps from zero to HIPAA compliant patient texting in your application.

Use Cases

Embed patient texting in your EHR

Add two-way patient messaging directly inside your EHR workflow. Clinicians and staff send and receive texts without leaving the chart. Messages are logged to the patient record automatically.

Add appointment reminders to your practice management software

Trigger automated text reminders from your scheduling system. Patients confirm, cancel, or reschedule via text reply. No-show rates drop. Your software gets credit.

Build patient communication into your telehealth platform

Pre-visit reminders, post-visit follow-ups, and between-visit check-ins all through secure text. Give your telehealth product a communication layer that actually gets used (98% text read rate vs. 20% patient portal open rate).

White-label patient messaging

Use OhMD’s messaging infrastructure under your own brand. Your customers see your product. OhMD powers the backend. No compliance headaches, no deliverability issues, no carrier management.

Automate patient outreach at scale

Care gap campaigns, recall reminders, balance collection, satisfaction surveys. Connect your analytics to OhMD’s API and trigger personalized outreach based on patient data.

API built in messaging

Why app developers choose OhMD Special Delivery

  • Special Delivery is the cost-effective, zero maintenance way to bring two-way texting to your healthcare solution

  • HIPAA, PCI, and TCPA compliant patient texting solutions that let you focus on building your business

  • A unified communication view that brings simplicity to your customers

  • Select API partners gain access to 40,000+ physicians using OhMD

Why app developers choose OhMD Unified Inbox

  • One patient thread for every interaction
    Calls, SMS, AI replies, and human messages in a single, auditable view

  • Hero‑in‑the‑loop automation
    AI handles routine workflows and auto‑escalates low‑confidence cases to staff

  • Built on Special Delivery rails
    Runs on the practice’s local number with EHR writeback and a complete audit trail

  • Embeddable & configurable
    SSO/API/iframe options and role‑based filters so each team sees what matters

UI example from OhMD

OhMD in your platform

Patient communication embedded in your solution. See how integrating OhMD functionality into your own products and offerings can elevate how your customers communicate with patients. Contact us to learn more!

Technical Capabilities

Capability

Details

Protocol

HTTP API with JSON payloads

Authentication

API key-based auth with sandbox and production environments

Two-way SMS

Send outbound messages, receive inbound via webhooks

Message status

Real-time delivery callbacks (sent, delivered, failed, read)

HIPAA compliance

BAA included, encryption at rest (AES-256) and in transit (TLS 1.2+)

TCPA compliance

Built-in opt-in/opt-out management and consent tracking

PCI compliance

Payment-related messaging supported

Audit trail

Complete message logging with timestamps, sender, recipient, and delivery status

EHR integration

Pre-built connectors for athenahealth, eClinicalWorks, and 30+ EHR systems

Local numbers

Messages send from the practice’s existing local phone number

Embedding options

SSO, API, iframe. Role-based filters so each team sees what matters

Rate limits

High-throughput messaging for appointment reminders and bulk outreach

Automate calls. Engage patients. Reduce phone stress.

See how OhMD can help you.

Automate calls. Engage patients. Reduce phone stress.

See how OhMD can help you.

Automate calls. Engage patients. Reduce phone stress.

See how OhMD can help you.