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Case study

Verified caller ID for HIPAA-conscious telehealth

Patients ignored calls from unknown numbers, stalling telehealth. Dialer showed the doctor's office number — verified and HIPAA-safe.

Doximity

Timeframe

2013–2017

Focus

Redacted, de-identified outcomes

Summary

Doximity Dialer caller ID verification interface on iOS

Patients ignored calls from unknown numbers, stalling telehealth. Dialer showed the doctor's office number — verified and HIPAA-safe.

Doximity launched Dialer in 2016 as a physician calling tool — doctors could call patients from personal cell phones while patients saw the doctor's office on caller ID. Dialer later integrated with Epic Haiku, letting physicians call directly from the mobile EHR, and appears in the Epic Showroom. Doximity has since described Dialer as enabling 110M+ video and audio visits from 300K+ active clinician users.

Summary

Patients ignored calls from unknown numbers, stalling telehealth. Dialer showed the doctor's office number — verified and HIPAA-safe.

Intervention

Verified caller ID and safety copy.

Outcome

Pickup rates improved enough that clinics stopped raising it as a top concern.

Doximity

2013–2017

End-to-end flow

1 Doctor opens Dialer → 2 Enters patient phone number → 3 System verifies office caller ID → 4 Patient sees "Dr. Smith's Office" on phone → 5 Patient answers → 6 Call connected with verified identity

Detail

Constraints
  • HIPAA privacy and patient consent requirements.
  • Carrier spoofing rules and call deliverability risk.
  • Clinician adoption risks if workflows added extra steps.
Interventions
  • Verified caller ID and safety copy.
  • Audit-ready call logs and escalation guidance.
  • Fallback workflows for missed connections.
Outcomes
  • Pickup rates improved enough that clinics stopped raising it as a top concern.
  • <span data-evidence='verified'>iOS app reviews climbed from 3.7 to 4.8 stars</span> during mobile product work.
  • Spoofing reports dropped below the threshold that required carrier review.
  • <span data-evidence='directional'>Clinician adoption accelerated — answering stopped being the bottleneck.</span>
Artifacts
  • Documented how caller ID mapping rules interacted with carrier spoofing protections.
  • Consent copy and verification UX patterns tested across clinic workflows.
  • Escalation playbook for failed connections and missed-call recovery.

Details are anonymized because of healthcare, client, and commercial confidentiality. Where exact figures cannot be shared, I describe the operating problem, intervention, observed directional change, and what I directly owned.

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