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License & Identifications

A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).

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Education & Awards

Dr. Geier graduated from George Washington University. He has 2 awards.

Sigma xi honor society sigma xi honor society
Sigma xi honor society


Dr. Geier has 2 hospital affiliations:

  • Greater Baltimore Medical Center 
  • Union Memorial Hospital Cancer Center 


  • Spanish

> > > > Dr. Mark Geier, MD, PHD

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Additional Information
Dr. Mark Robin Geier MD and PHD is a male Medical Geneticist, has 34 years of experience and practices in Medical Genetics.
Where does Dr. Mark R. Geier practice?
Dr. Mark Geier has 1 office location.
Dr. Mark Geier practices Medical Genetics near Silver Spring, MD.
See Silver Spring Geneticists.