# Guide.MD > A physician and healthcare-organization directory built on official U.S. NPI (NPPES/CMS) registry data, refreshed weekly, covering 10,482,029 providers. Verified providers manage their own profiles after confirming an email address matched to the public record, or a review where it cannot be matched. ## What this site offers - Provider profile pages: https://guide.md/provider/{npi}-{name}/ (schema.org Physician/MedicalOrganization JSON-LD embedded) - Faceted human search: https://guide.md/find-a-doctor/ - Verified-provider listings, stated by the provider on a profile they confirmed is theirs and indexable by state and city: - Accepting new patients: https://guide.md/accepting-new-patients/ - Telehealth providers: https://guide.md/telehealth-providers/ - Doctors who treat personal-injury patients on a medical lien: https://guide.md/doctors-on-lien/ - Medical expert witnesses (plaintiff, defense or both, by specialty): https://guide.md/expert-witnesses/ - Clinicians open to industry consulting (pharma, devices, health tech): https://guide.md/industry-consultants/ - Providers taking appointment requests online: https://guide.md/online-appointment-requests/ Each provider page carries these as schema.org Offer/Service entries and as plain sentences under "Availability & services". ## For providers, agencies and practices - Claim a profile (free; a practice or institutional email needs no identity document): https://guide.md/claim/ - Free visibility check (no card, no ID): what the directory, the web and AI assistants hold on a provider: https://guide.md/visibility-check/ - Physician online presence: https://guide.md/physician-online-presence/ - AI visibility for doctors: https://guide.md/ai-visibility-for-doctors/ - Medical marketing agencies: one login manages many client profiles, provider approves from that email and confirms their own name, referral commission on accounts brought: https://guide.md/for-medical-marketing-agencies/ - Referral and affiliate program (providers: a free month of Pro per paying referral; agencies: a percentage for a fixed window): https://guide.md/affiliates/ - Comparisons with Zocdoc, Doctors on Liens and SEAK, with sources: https://guide.md/compare/ - How claiming, agency access and reclaiming a profile work: https://guide.md/reclaim-your-profile/ - Verification standards (what verified means and does not mean): https://guide.md/verification-standards/ - How results are ordered (relevance, then verified status; paid plans never change position; Featured is labeled): https://guide.md/how-search-works/ ## Machine-readable API (free, no key required) - Provider by NPI: https://guide.md/wp-json/gol/v1/provider/{10-digit-npi} - Search: https://guide.md/wp-json/gol/v1/search?q={name}&state={XX}&specialty={text}&city={city}&entity={1|2}&page={n} ## Data sources & freshness - NPPES NPI Registry weekly dissemination files (auto-imported weekly) - CMS public datasets; provider-submitted content on verified (claimed) profiles