Mary Dufon, LMSW
NPI 1659061760 · Social Worker · Grand Rapids, MI
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Dufon, LMSW is a Social Worker provider in Grand Rapids, MI (NPI 1659061760).
Provider details
- NPI number
- 1659061760
- Entity type
- Individual
- Primary specialty
- Social WorkerBehavioral Health & Social Service Providers
- Credential
- LMSW
- Sex
- Female
- Sole proprietor
- Yes
- License
- 6801114599 (MI)
Specialties & taxonomies
Behavioral Health & Social 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
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
- 2023-05-11
- Last updated
- 2023-05-11
- Certified
- 2023-05-11
Frequently asked questions
- What is Mary Dufon's NPI number?
- Mary Dufon's National Provider Identifier (NPI) is 1659061760, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Dufon's specialty?
- Mary Dufon is listed in the NPPES registry with a primary specialty of Social Worker (Behavioral Health & Social Service Providers).
- Where is Mary Dufon located?
- Mary Dufon's practice location on file with NPPES is 2730 5 Mile Rd Ne Ste 101, Grand Rapids, MI 49525-6518.
- What is Mary Dufon's phone number?
- The practice phone number listed in the NPPES registry for Mary Dufon is (616) 426-9401.
- Does Mary Dufon accept Medicare?
- Mary Dufon is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Dufon's NPI active?
- Yes — Mary Dufon's NPI (1659061760) is active in the NPPES registry as of the last update on 2023-05-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.