。、。
Yeah. My previous doctor referred me, and I transferred hospitals.
Literal
Yeah. Previous [genitive-の] doctor [by-に] introduced-receiving, transferred-hospitals [explanatory-の].
A casual medical conversation. 前の先生 ('previous doctor' — 先生 is used for medical doctors as well as teachers). 紹介してもらって ('had [someone] introduce me / got a referral from') uses ~てもらう ('have someone do for you'). 転院した (てんいんした, 'transferred hospitals') is a medical-specific compound: 転 (transfer) + 院 (hospital). The sentence-final の is the feminine explanatory particle. うん ('yeah') is the casual affirmative.