William Arreola, SAC
NPI 1396948733 · Social Worker · Janesville, WI
Enrolled with Medicare as Practitioner - Mental Health Counselor · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Arreola, SAC is a Social Worker provider in Janesville, WI (NPI 1396948733).
Provider details
- NPI number
- 1396948733
- Entity type
- Individual
- Primary specialty
- Social WorkerBehavioral Health & Social Service Providers
- Credential
- SAC
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Behavioral Health & Social Service Providers
- Mental Health Counselor101YM0800X
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
83% 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
- 2007-06-05
- Last updated
- 2014-06-12
Frequently asked questions
- What is William Arreola's NPI number?
- William Arreola's National Provider Identifier (NPI) is 1396948733, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Arreola's specialty?
- William Arreola is listed in the NPPES registry with a primary specialty of Social Worker (Behavioral Health & Social Service Providers).
- Where is William Arreola located?
- William Arreola's practice location on file with NPPES is 1000 Mineral Point Ave, Janesville, WI 53548-2940.
- What is William Arreola's phone number?
- The practice phone number listed in the NPPES registry for William Arreola is (608) 756-6508.
- Does William Arreola accept Medicare?
- William Arreola is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Arreola's NPI active?
- Yes — William Arreola's NPI (1396948733) is active in the NPPES registry as of the last update on 2014-06-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.