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Alfonso Sierra, MD
NPI 1700978293 · Pediatrics Physician · Dracut, MA
Alfonso Sierra, MD is a Pediatrics Physician provider in Dracut, MA (NPI 1700978293).
Provider details
- NPI number
- 1700978293
- Entity type
- Individual
- Primary specialty
- Pediatrics PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 40721 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(90/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
505 Nashua Rd
Dracut, MA 01826-1929
Phone: (978) 957-4300
Fax: (978) 957-3891
Street-level locationGet directions
Mailing address
10 Seaview Ave
Newport, RI 02840-3627
Registry dates
- Enumerated
- 2006-09-29
- Last updated
- 2007-07-08
Frequently asked questions
- What is Alfonso Sierra's NPI number?
- Alfonso Sierra's National Provider Identifier (NPI) is 1700978293, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alfonso Sierra's specialty?
- Alfonso Sierra is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
- Where is Alfonso Sierra located?
- Alfonso Sierra's practice location on file with NPPES is 505 Nashua Rd, Dracut, MA 01826-1929.
- What is Alfonso Sierra's phone number?
- The practice phone number listed in the NPPES registry for Alfonso Sierra is (978) 957-4300.
- Is Alfonso Sierra's NPI active?
- Yes — Alfonso Sierra's NPI (1700978293) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.