Mayo Clinic Health System – Oakridge names Emergency Department nursing director Wed, 01/28/2015 - 15:01 ateditor Christina Bartholomew has been named Emergency Department nursing director at Mayo Clinic Health System – Oakridge in Osseo.Full text available to premium subscribers only. Read more about Mayo Clinic Health System – Oakridge names Emergency Department nursing director Tags: osseo oakridgemayo clinicchristina bartholomew