John P O'brien is a Clinical Social Worker based in Frederick, MD and is specialized in Clinical. John P O'brien practices in Frederick, MD and has the professional credentials of LCSW-C. The NPI Number for John P O'brien is 1700137940 and holds a License No. 14829 (Maryland).
The current practice location address for John P O'brien is 198 Thomas Johnson Dr, Frederick, MD and can be reached out via phone at 301-208-8900 and via fax at 301-208-8369.
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