Rachel O'Sullivan, LCSW
NPI 1659030393 · Clinical Social Worker · Waukesha, WI
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Rachel O'Sullivan, LCSW is a Clinical Social Worker provider in Waukesha, WI (NPI 1659030393).
Provider details
- NPI number
- 1659030393
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Female
- Sole proprietor
- No
- License
- 12716-123 (WI)
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
4 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
- 2021-12-09
- Last updated
- 2025-12-09
- Certified
- 2025-12-09
Frequently asked questions
- What is Rachel O'Sullivan's NPI number?
- Rachel O'Sullivan's National Provider Identifier (NPI) is 1659030393, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Rachel O'Sullivan's specialty?
- Rachel O'Sullivan is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Rachel O'Sullivan located?
- Rachel O'Sullivan's practice location on file with NPPES is 514 Riverview Ave, Waukesha, WI 53188-3631.
- What is Rachel O'Sullivan's phone number?
- The practice phone number listed in the NPPES registry for Rachel O'Sullivan is (262) 548-7666.
- Does Rachel O'Sullivan accept Medicare?
- Rachel O'Sullivan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Rachel O'Sullivan's NPI active?
- Yes — Rachel O'Sullivan's NPI (1659030393) is active in the NPPES registry as of the last update on 2025-12-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.