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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).

Patient Reviews

Patient comments (10)

The overall average patient rating of Dr. William Grella is Good. Dr. Grella has been reviewed by 15 patients who have provided 10 comments. The rating is 3.5 out of 5 stars.

Patient Ratings
Ease of Appointment 3.4
Promptness 4.0
Courteous Staff 3.7
Accurate Diagnosis 4.0
Bedside Manner 3.5
Spends Time with Me 3.3
Follows Up After Visit 3.9

Education & Awards

Dr. Grella graduated from St. George's University, Bay Shore. He has 2 awards.

Patients' Choice Award (2010)
Compassionate Doctor Recognition (2010)


Dr. Grella has 3 hospital affiliations:

  • St. Joseph'S Regional Medical Center 
  • St. Joseph's Wayne Hospital 
  • Saint Clare's Hospital - Boonton Township 

> > > > Dr. William Grella, MD

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Additional Information
Dr. William F Grella MD is a male Internist, has 14 years of experience and practices in Internal Medicine.
Where does Dr. William F. Grella practice?
Dr. William Grella has 9 office locations.
Dr. William Grella practices Internal Medicine near Denville, NJ.
Additional practice locations include: Wayne, NJ and Lincoln Park, NJ.
See Denville Internists.