We are thankful you have chosen our practice as your trusted resource for oncology or hematology care. Our Hamilton Mill office is conveniently located off of the Hamilton Mill exit on 985 to serve our north Gwinnett patients. 

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Helpful office information:

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Physicians: Hamilton Mill is served by 2 primary physicians

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Dr. Debra Miller

Dr. Vishal Ranpura

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Nurse Practitioner

Kristen Copeland NP-C

Rebeca Klatt, NP-C

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Office hours: The office is open from 7:30 am to 5:00 pm, phone lines open at 8:30. Nurses are available from 8:30 am until 5:00 pm. Physician appointments are from 9:00 am until 4:00 pm. Our main office line is 678.722.3940.

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Nurse Line:  Each office has as nurse line that you can call for any medical questions and concerns.  You will be prompted to leave a message for the nursing staff.  We have a nurse on call during business hours who checks the voicemail hourly and works closely with your physician to address your needs.  All calls will be returned by the end of the business day in the order of urgency. All messages left after 4:00 PM may not be returned until next business day. For all disability and FMLA paperwork please bring it to our office. Turnaround time is 7 to 10 business days. Please call 762.257.5042

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After Hours: If you are in need of medical advice after our office is closed, please dial our main number and our 'after hours' service will answer. They in turn will take your message and contact the physician on call for that day. You must disable your caller id block in order for the doctor to return your call. Please be aware that after hour calls may not be returned by the physician that you normally see in our office.