John Michael Callahan is a Pediatrics Physician based in Dubuque, IA. John Michael Callahan practices in Dubuque, IA and has the professional credentials of MD. The NPI Number for John Michael Callahan is 1851704480 and holds a License No. MD-44274 (Iowa).
The current practice location address for John Michael Callahan is 1000 Langworthy St, Dubuque, IA and can be reached out via phone at 563-584-3440 and via fax at 563-584-3009.
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