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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).

Learn more about Dr. Gregory Chen:

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Specialties & Research

Dr. Gregory Chen, MD is board certified in Urology.

  • He has special expertise in 1 area:
  • Overactive Urinary Bladder

Education & Awards

Dr. Chen graduated from Rush Medical College, Chicago.


Dr. Chen has 9 hospital affiliations:

  • Kaiser Permanente Hospital - Oakland 
  • Kaiser Foundation Hospital - Fremont 

> > > > Dr. Gregory Chen, MD

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Additional Information
Dr. Gregory Chen MD is a male Urologist, has 19 years of experience and practices in Urology.
Where does Dr. Gregory Chen practice?
Dr. Gregory Chen has 1 office location.
Dr. Gregory Chen practices Urology near Hayward, CA.
See Hayward Urologists.