• Not Accepting New Patients


    During this unprecedented time, our office remains open. In addition to providing in-office care, we have expanded our service offerings to include virtual visits rendered via our secure telemedicine platform. If you would like to schedule a virtual visit or an in office visit, please follow the links below or call our office at 301.220.0200. If you would like to learn more about the Virtual Visit platform, please click here.

    Make an Appointment

News & Announcements

We Are Members of Privia Medical Group

As of March 8th, 2016, we are proud members of Privia Medical Group!

Proudly Part of Privia Health

Thomas E. Maslen MD is proudly part of Privia Health. Privia connects us with leading doctors in the community to transform healthcare by delivering high-quality, coordinated care that is centered on our patients.

To learn more about the resources that help you manage your healthcare, or to find other Privia doctors, visit their website.

A great guy - he's very personable and definitely takes the time to answer questions and make sure you feel like you're taken care of.

Greenbelt Office


7525 Greenway Center Drive Suite 312
Greenbelt, MD 20770 Get Directions



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Patient Portal

Access your personal health information and test results, securely message your care team, and manage payments, all from one spot and at your convenience, 24/7.

  • See your provider's openings and schedule appointments.
  • Review prescription medications and request renewals.
  • View payment history and pay current invoices.
Patient Portal