• Treating the Whole Patient

    We work with you to craft an individual treatment plan to fit your needs and lifestyle. We are conveniently located in Waldorf, MD. Make an appointment online to come see us today!

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News & Announcements

  • We Are Members of Privia Medical Group

    As of March 24, 2015, we are proud members of Privia Medical Group!

Proud to be Part of Privia Medical Group

Cook & Siu PC is a proud member of Privia Medical Group. The best doctors in our community have joined together to form Privia Medical Group (PMG), a multi-specialty, high-performance medical group that puts patients first. Our physicians are united by the mission of providing better, more coordinated care for their patients.

To learn more about Privia Medical Group and find other Privia doctors, please visit our website.

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I love Dr. Siu. Very informative and sweet.

Main Office


3450 Old Washington Road Suite 103
Waldorf, MD 20602


301.472.4290 240.607.3609 Secure Message via Portal


Patient Portal

Privia Medical Group offers patients personalized and secure 24/7 online access to their health records, as well as the ability to communicate with your medical care team through our patient portal.


Schedule Appointments

The easiest way to book an appointment with your provider.

Request Prescriptions

Review prescription medications and request prescription renewals.

Secure Messages

Send and receive secure messages with your medical care team.

View Your Records & Tests

Quick access to your secure electronic medical record and test results.

Pay Your Bill

Pay your invoices by credit card, securely and conveniently.

Cook & Siu PC is not accepting new patients at this time. If you are currently a patient, please make an appointment here.

I am an existing patient