Sources

Praxis MD is built on a small, public set of authoritative healthcare and population data sources. Every derived metric identifies the inputs and limitations used.

Primary data

• NPPES (National Plan and Provider Enumeration System) — every provider record, every taxonomy, every license, every address. CMS data dissemination →
• NUCC Healthcare Provider Taxonomy — taxonomy code definitions and the specialty tree used in our breadcrumbs. NUCC taxonomy →
• CMS Doctors & Clinicians — public Medicare clinician attributes shown where a record matches an NPI. CMS provider data →
• U.S. Census Bureau American Community Survey — place population estimates used to normalize city provider density. ACS documentation →
• HRSA shortage-area data — designated primary care, dental, and mental health shortage-area summaries. HRSA shortage areas →

Refresh schedule

See methodology for the full refresh schedule and how delta merges work.

What we don't use

• Provider review or rating data.
• Personal contact info beyond the NPPES public fields.
• Payer claims data, prescribing data, or any non-public source.
• Scraped data from other directories.