Heather Difonzo, M.S., CCC-SLP
NPI 1740561091 · Speech-Language Pathologist · Chelmsford, MA
Heather Difonzo, M.S., CCC-SLP is a Speech-Language Pathologist provider in Chelmsford, MA (NPI 1740561091).
Provider details
- NPI number
- 1740561091
- Entity type
- Individual
- Primary specialty
- Speech-Language PathologistSpeech, Language and Hearing Service Providers
- Credential
- M.S., CCC-SLP
- Sex
- Female
- Sole proprietor
- Yes
- License
- S3710 (MS)
Specialties & taxonomies
Speech, Language and Hearing Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
14 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
Mailing address
Registry dates
- Enumerated
- 2011-08-31
- Last updated
- 2013-07-16
Frequently asked questions
- What is Heather Difonzo's NPI number?
- Heather Difonzo's National Provider Identifier (NPI) is 1740561091, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Heather Difonzo's specialty?
- Heather Difonzo is listed in the NPPES registry with a primary specialty of Speech-Language Pathologist (Speech, Language and Hearing Service Providers).
- Where is Heather Difonzo located?
- Heather Difonzo's practice location on file with NPPES is 40 Parkhurst Rd, Chelmsford, MA 01824-1513.
- What is Heather Difonzo's phone number?
- The practice phone number listed in the NPPES registry for Heather Difonzo is (978) 256-3151.
- Is Heather Difonzo's NPI active?
- Yes — Heather Difonzo's NPI (1740561091) is active in the NPPES registry as of the last update on 2013-07-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.