• Now accepting new patients

    Bringing You High Quality Care You Can Count On

    Our innovative membership medical practice is located in Washington, DC. We combine top clinical expertise, a wellness focus, and access to 21st century technologies to offer you a better healthcare experience.

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Top Doctor Award Congratulations to Dr. McMackin, a Washingtonian 2017 Top Doctor!

News & Announcements

Dr. McMackin Has Temporarily Stopped Taking New Patients

Due to an overwhelming number of new patients since January 1, Dr. McMackin is no longer accepting new patients. ┬áDr. Zimnoch and Dustin Fronczak still have new patient appointments open…. Read More

We Are Members of Privia Medical Group

As of April 10, 2014, we are proud members of Privia Medical Group!

Proud to be Part of Privia Medical Group

McMackin & Zimnoch 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.

If you are looking for a Primary Care Physician that is genuine, listens, very knowledgeable and don't seem to count you as a patient number just to collect on your corporate medical benefits.....then Dr. McMackin is your man! The office and facility were impeccably clean, the front desk and billing staff were friendly, and the waiting area was comfortable.
Don C.

Washington, D.C. Office


2311 M Street NW Suite 302
Washington, DC 20037 Get Directions


202.296.0043 202.296.1306 Secure Message via Portal


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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