Alert. COVID-19 Alert: Our office is currently allowing 1 visitor to each appointment. Babies and children are also counted as visitor (s). ***Office Telephone Business Hours: Monday thru Thursday 8:00 am to 4:30 pm and Friday 9:00 am to 3:00 pm***. 410-997-8444 8945 Guilford Road, Suite 100, Columbia, MD 21046 Hours.Providers‧Our Practice‧Pregnancy‧Women's Care‧Location‧Nurse Practitioners.