Mark Farrell O'brien, MS, LCPC is a professional counselor in Chicago, IL. Mark Farrell O'brien, MS, LCPC NPI is 1932427986. The provider is registered as an individual entity type.
The NPPES NPI record indicates the provider is a male.
The provider's business location address is:
605 N MICHIGAN AVE FL 4
CHICAGO, IL
ZIP 60611-141
The enumeration date for this NPI number is 5/13/2010 and was last updated on 9/20/2019.