Elizabeth Duffell, SLP
NPI 1770070328 · Speech-Language Pathologist · Rockford, IL
Elizabeth Duffell, SLP is a Speech-Language Pathologist provider in Rockford, IL (NPI 1770070328).
Provider details
- NPI number
- 1770070328
- Entity type
- Individual
- Primary specialty
- Speech-Language PathologistSpeech, Language and Hearing Service Providers
- Credential
- SLP
- Sex
- Female
- Sole proprietor
- No
- License
- 146012607 (IL)
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
8 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
- 2018-04-19
- Last updated
- 2018-04-19
Frequently asked questions
- What is Elizabeth Duffell's NPI number?
- Elizabeth Duffell's National Provider Identifier (NPI) is 1770070328, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Elizabeth Duffell's specialty?
- Elizabeth Duffell is listed in the NPPES registry with a primary specialty of Speech-Language Pathologist (Speech, Language and Hearing Service Providers).
- Where is Elizabeth Duffell located?
- Elizabeth Duffell's practice location on file with NPPES is 209 9th St Ste 302, Rockford, IL 61104-2235.
- What is Elizabeth Duffell's phone number?
- The practice phone number listed in the NPPES registry for Elizabeth Duffell is (779) 696-4470.
- Is Elizabeth Duffell's NPI active?
- Yes — Elizabeth Duffell's NPI (1770070328) is active in the NPPES registry as of the last update on 2018-04-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.