Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. Alfonso E. Sierra, MD

Individual provider Pediatrics Physician · NPI 1700978293

Dr. Alfonso E. Sierra, MD is a Pediatrics Physician in Dracut, Massachusetts. Practices as a sole proprietor. Licensed in Massachusetts.

Licensed in
MA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

505 Nashua Rd
Dracut, MA 01826-1929
Phone: (978) 957-4300
Fax: (978) 957-3891
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Pediatrics Physician (primary) Taxonomy 208000000X · Licence 40721 (MA)

Record details

NPI number1700978293
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedSeptember 29, 2006
Last updated in NPPESJuly 8, 2007
Mailing address10 Seaview Ave, Newport, RI 02840-3627

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