{"schema_version":"1","generated_at":"2026-11-10T19:54:10.856Z","data_as_of":null,"url":"https://www.findmykol.com/kol/donald-hangen","json_url":"https://www.findmykol.com/kol/donald-hangen/profile.json","record_kind":"basic","profile_kind":"clinical","person":{"slug":"donald-hangen","name":"Donald Hangen","credential":"MD","specialty":"Orthopaedic Surgery","specialty_raw":"Orthopaedic Surgery","therapeutic_area":"Musculoskeletal","therapeutic_areas":["Musculoskeletal"],"institution":"University of Massachusetts Chan Medical School","institution_url":"https://www.findmykol.com/institution/university-of-massachusetts-chan-medical-school","city":"Marlboro","state":"MA","region":{"label":"Northeast","url":"https://www.findmykol.com/region/northeast"}},"identifiers":{"npi":"1578565511","openalex":"A5080547750"},"summary":"Donald Hangen is a Musculoskeletal physician affiliated with University of Massachusetts Chan Medical School. OpenAlex indexes 12 publications with 560 citations (h-index 10).","overview":null,"focus":{"indications":[],"research_topics":["Musculoskeletal"]},"scholarship":{"works_count":12,"cited_by_count":560,"h_index":10,"source":"works"},"similar":[{"name":"Fernando Martinez","slug":"fernando-martinez","institution":"University of Massachusetts Chan Medical School","specialty":"Pulmonary Disease","url":"https://www.findmykol.com/kol/fernando-martinez","json_url":"https://www.findmykol.com/kol/fernando-martinez/profile.json"},{"name":"Kimberly Yonkers","slug":"kimberly-yonkers","institution":"University of Massachusetts Chan Medical School","specialty":"Psychiatry","url":"https://www.findmykol.com/kol/kimberly-yonkers","json_url":"https://www.findmykol.com/kol/kimberly-yonkers/profile.json"},{"name":"Richard Irwin","slug":"richard-irwin","institution":"University of Massachusetts Chan Medical School","specialty":"Pulmonary Disease","url":"https://www.findmykol.com/kol/richard-irwin","json_url":"https://www.findmykol.com/kol/richard-irwin/profile.json"},{"name":"Craig Lilly","slug":"craig-lilly","institution":"University of Massachusetts Chan Medical School","specialty":"Pulmonary Disease","url":"https://www.findmykol.com/kol/craig-lilly","json_url":"https://www.findmykol.com/kol/craig-lilly/profile.json"},{"name":"Jaeyoung Kim","slug":"jaeyoung-kim","specialty":"Foot and Ankle Surgery","url":"https://www.findmykol.com/kol/jaeyoung-kim","json_url":"https://www.findmykol.com/kol/jaeyoung-kim/profile.json"},{"name":"Robert Meehan","slug":"robert-meehan","institution":"Wayne State University","specialty":"Orthopaedic Surgery","url":"https://www.findmykol.com/kol/robert-meehan","json_url":"https://www.findmykol.com/kol/robert-meehan/profile.json"},{"name":"Thomas Wright","slug":"thomas-wright","specialty":"Surgery of the Hand","url":"https://www.findmykol.com/kol/thomas-wright","json_url":"https://www.findmykol.com/kol/thomas-wright/profile.json"},{"name":"David Kao","slug":"david-kao","specialty":"Orthopaedic Surgery","url":"https://www.findmykol.com/kol/david-kao","json_url":"https://www.findmykol.com/kol/david-kao/profile.json"}],"coverage":{"note":"A basic directory record. Sections absent here were not yet checked for this person, so absence means not yet looked, never none found.","not_yet_checked":["funding","congress","network","presence","recognition"]},"not_included":{"note":"This document is the public layer: neutral facts cited to their source. Judgments (influence tier, archetype, trajectory commentary) and the itemized rows past each section's public teaser are account features and are not served here or to crawlers.","withheld_rows":{}},"sources":{"identity":{"name":"NPPES (CMS)","url":"https://npiregistry.cms.hhs.gov","provides":"Identity, specialty and practice location for every U.S. clinician"},"works":{"name":"OpenAlex","url":"https://openalex.org","provides":"Citations, h-index, research topics, most-cited works and congress abstracts"}},"methodology_url":"https://www.findmykol.com/about#methodology"}