However, maintaining an accurate medical history for a patient who lives in poverty and may be residing in a homeless shelter or other temporary housing is more complicated than for patients with a more permanent address. In cities and towns with CHF clinics, a patient served by a specific clinic in a given neighborhood in the Bronx this month may be domiciled in a different shelter in a different borough and show up at a permanent clinic or MMC in a different location in NYC the next month. To retrieve a record from another clinic may require a phone call and fax capabilities.