Our Data Methodology
How HealthTal sources, verifies, and maintains 1.77M+ healthcare professional contacts.
Data Sources
HealthTal aggregates healthcare professional data from multiple publicly available sources:
- National Provider Identifier (NPI) Registry — 9.1M+ providers from the CMS NPPES database
- State licensing boards — Cross-referenced with state medical and nursing board records
- Professional association directories — Public listings from healthcare organizations
- Public business records — Practice locations and organizational affiliations
Verification Process
Every contact in our database goes through a multi-step verification process:
- NPI cross-referencing — Matching records against the national NPI registry for credential validation
- Email verification — Syntax validation, MX record checks, and deliverability testing
- Phone validation — Carrier lookup and line-type verification
- Monthly refresh cycles — Database updated regularly with new and corrected information
Coverage
Our database covers 39 healthcare specialties across all 50 U.S. states and Canadian provinces, including:
• Nurses
• Nurse Practitioners
• Licensed Practical Nurses
• Physicians
• Internal Medicine Physicians
• Family Medicine Physicians
• Physician Assistants
• Anesthesiologists
• Cardiologists
• Dermatologists
• Endocrinologists
• Gastroenterologists
• And 27 more specialties...
Privacy & Compliance
HealthTal is committed to responsible data practices. All data in our database is sourced from publicly available records. Healthcare professionals can request removal from our database at any time through our opt-out page.
For more information, see our Privacy Policy and Compliance pages.