Help! Need telephone # for travel agency "Healthstaffers".

Can anyone help me find out the telephone number for the travel agency "Healthstaffers, Inc"? They used to staff the San Diego Medical Center in San Diego, California. Did they change names or were they bought out? They used to staff NICU and Tele. When I call their old number, it is picked up by a private citizen who hasn't heard of Healthstaffers. Any help would be appreciated. I'm updating my resume and need a telephone number. Thanks so much. Santefe