IndividualActive
Cortney Duffner, LMSW
NPI 1356739403 · Clinical Social Worker · Lowell, MI
Cortney Duffner, LMSW is a Clinical Social Worker provider in Lowell, MI (NPI 1356739403).
Provider details
- NPI number
- 1356739403
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LMSW
- Sex
- Female
- Sole proprietor
- No
- License
- 6801088062 (MI)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Established profile(74/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
11 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
11630 Fulton St E
Lowell, MI 49331-9426
Phone: (616) 481-3784
Street-level locationGet directions
Mailing address
5580 Highbury Dr Se
Ada, MI 49301-7738
Registry dates
- Enumerated
- 2014-12-23
- Last updated
- 2014-12-23
Frequently asked questions
- What is Cortney Duffner's NPI number?
- Cortney Duffner's National Provider Identifier (NPI) is 1356739403, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Cortney Duffner's specialty?
- Cortney Duffner is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Cortney Duffner located?
- Cortney Duffner's practice location on file with NPPES is 11630 Fulton St E, Lowell, MI 49331-9426.
- What is Cortney Duffner's phone number?
- The practice phone number listed in the NPPES registry for Cortney Duffner is (616) 481-3784.
- Is Cortney Duffner's NPI active?
- Yes — Cortney Duffner's NPI (1356739403) is active in the NPPES registry as of the last update on 2014-12-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.