John Callahan works as a doctor in Syracuse. Practices under license number 208546, cross-checked against public registries. Prolio refreshes this listing weekly so the public information stays current and you're not reading a page Google forgot about years ago. You can contact John Callahan directly from this page — we don't take a commission, we don't resell the lead, and we don't sit between you and the professional. If you're John Callahan and want to edit this profile yourself, you can claim it for free at the bottom of the page.
John Callahan — registro NPI #1568454528. Datos públicos NPPES (CMS).