Halcyon Hospice Share: Health Care ServicesHospicesNonprofitSenior Citizens Services Halcyon Hospice Visit Website Request Info Longmont Longmont, CO 80501 720-961-5025 About Map About Halcyon Hospice is committed to a standard of excellence in providing sensitive, patient-centered health care to hospice patients and families. What's Nearby? Distance: 5 10 15 20 25 50 mi.