Shannon Duffy, CCC-SLP
NPI 1821709668 · Speech-Language Pathologist · Lowell, MA
Shannon Duffy, CCC-SLP is a Speech-Language Pathologist provider in Lowell, MA (NPI 1821709668).
Provider details
- NPI number
- 1821709668
- Entity type
- Individual
- Primary specialty
- Speech-Language PathologistSpeech, Language and Hearing Service Providers
- Credential
- CCC-SLP
- Sex
- Female
- Sole proprietor
- No
- License
- 2228 (NH)
Specialties & taxonomies
Speech, Language and Hearing Service Providers
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
3 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Additional practice locations (1)
- 8 Prospect StNashua, NH 03060-3925Phone: (603) 577-2000
Registry dates
- Enumerated
- 2022-12-13
- Last updated
- 2022-12-13
- Certified
- 2022-12-13
Frequently asked questions
- What is Shannon Duffy's NPI number?
- Shannon Duffy's National Provider Identifier (NPI) is 1821709668, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Shannon Duffy's specialty?
- Shannon Duffy is listed in the NPPES registry with a primary specialty of Speech-Language Pathologist (Speech, Language and Hearing Service Providers).
- Where is Shannon Duffy located?
- Shannon Duffy's practice location on file with NPPES is 295 Varnum Ave, Lowell, MA 01854-2193.
- What is Shannon Duffy's phone number?
- The practice phone number listed in the NPPES registry for Shannon Duffy is (978) 937-6000.
- Is Shannon Duffy's NPI active?
- Yes — Shannon Duffy's NPI (1821709668) is active in the NPPES registry as of the last update on 2022-12-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.