Michigan Lung and Critical Care MLCC sleep lab Grand Blanc Sleep Apnea Gregory Streff Mark Rittenger Pradeep Ramachandran
MLCC Sleep Lab Grand Blanc

Patient Information

Office hours
Office hours are Monday through Thursday 8:00 a.m. to 5:00 p.m., and appointments are scheduled Monday through Thursday 8:00 a.m. to 4:30 p.m.

Occasionally, an emergency may arise that would make it necessary to change your appointment. If you are unable to keep your appointment, please notify us at least 24 hours in advance.

24-hour care
We have a doctor and nurse practitioner in the office Monday through Thursday. Messages received during the day are answered and patients are called back at the end of the day (except in urgent situations, it may be the end of the working day or the next day before your message is responded to). Even though there is not a doctor in the office on Fridays, one of our doctors is on call 24-hours a day. If you have an urgent problem or question during office hours, you may call the office and speak with our staff. If it is after normal business hours, our office provides an answering service which can relay an urgent message to the physician on call. The answering service may be accessed by calling the regular office number (810) 695-4000.

Prescriptions and refills
Please call for refills during normal office hours and allow 24-48 hours before checking with your pharmacy. Please call at least 1 week before you are to take your last dose (2 weeks if you use a prescription mail-order service). There will be no prescription refills on Fridays or weekends.

We participate with most major insurance plans and will file your claims electronically. Payments for deductibles, co-payments and non-covered services are collected at the time of service. Please feel free to contact our office with any questions regarding our billing or insurance at (810) 695-4164.

Patient Portal
Please click on the Portal icon below to enter the Patient Portal:

Patient Portal



9450 S. Saginaw Street, Suite EGrand Blanc, Michigan 48439Telephone 810.695.4000FAX 810.695.4055