Mark Gillen, LPC
NPI 1104830785 · Clinical Social Worker · Ellsworth, WI
Mark Gillen, LPC is a Clinical Social Worker provider in Ellsworth, WI (NPI 1104830785).
Provider details
- NPI number
- 1104830785
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LPC
- Sex
- Male
- Sole proprietor
- Yes
- License
- 913-125 (WI)
Specialties & taxonomies
Behavioral Health & Social Service Providers
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
19 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
- 2006-07-28
- Last updated
- 2025-09-11
Frequently asked questions
- What is Mark Gillen's NPI number?
- Mark Gillen's National Provider Identifier (NPI) is 1104830785, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Gillen's specialty?
- Mark Gillen is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Mark Gillen located?
- Mark Gillen's practice location on file with NPPES is 257 N Piety St, Ellsworth, WI 54011-5056.
- What is Mark Gillen's phone number?
- The practice phone number listed in the NPPES registry for Mark Gillen is (715) 425-3890.
- Is Mark Gillen's NPI active?
- Yes — Mark Gillen's NPI (1104830785) is active in the NPPES registry as of the last update on 2025-09-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.