Joseph Duffy, SLP
NPI 1821226515 · Speech-Language Pathologist · Rochester, MN
Joseph Duffy, SLP is a Speech-Language Pathologist provider in Rochester, MN (NPI 1821226515).
Provider details
- NPI number
- 1821226515
- Entity type
- Individual
- Primary specialty
- Speech-Language PathologistSpeech, Language and Hearing Service Providers
- Credential
- SLP
- Sex
- Male
- Sole proprietor
- No
- License
- 5039 (MN)
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
16 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
- 2009-07-01
- Last updated
- 2026-02-25
- Certified
- 2026-02-25
Frequently asked questions
- What is Joseph Duffy's NPI number?
- Joseph Duffy's National Provider Identifier (NPI) is 1821226515, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joseph Duffy's specialty?
- Joseph Duffy is listed in the NPPES registry with a primary specialty of Speech-Language Pathologist (Speech, Language and Hearing Service Providers).
- Where is Joseph Duffy located?
- Joseph Duffy's practice location on file with NPPES is 200 1st St Sw, Rochester, MN 55905-0001.
- What is Joseph Duffy's phone number?
- The practice phone number listed in the NPPES registry for Joseph Duffy is (507) 284-2511.
- Is Joseph Duffy's NPI active?
- Yes — Joseph Duffy's NPI (1821226515) is active in the NPPES registry as of the last update on 2026-02-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.