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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. Alfonso Sierra:

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Patient Reviews

Patient comments (0)

The overall average patient rating of Dr. Alfonso Sierra is Excellent. Dr. Sierra has been reviewed by 1 patients who have provided 0 comments. The rating is 5 out of 5 stars.

Specialties & Research

Dr. Alfonso Sierra, MD is board certified in Pediatrics.

Education & Awards

Dr. Sierra graduated from Universidad De Antioquia, Medellin.


Dr. Sierra has 2 hospital affiliations:

  • Lowell General Hospital 
  • Children's Hospital 


  • Spanish

> > > > Dr. Alfonso Sierra, MD

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Additional Information
Dr. Alfonso E Sierra MD is a male Pediatrician, has 42 years of experience and practices in Pediatrics.
Where does Dr. Alfonso E. Sierra practice?
Dr. Alfonso Sierra has 2 office locations.
Dr. Alfonso Sierra practices Pediatrics near Dracut, MA.
See Dracut Pediatricians.