Sierra Simmons
NPI 1033999651 · Case Manager/Care Coordinator · Riverside, CA
Sierra Simmons is a Case Manager/Care Coordinator provider in Riverside, CA (NPI 1033999651).
Provider details
- NPI number
- 1033999651
- Entity type
- Individual
- Primary specialty
- Case Manager/Care CoordinatorOther Service Providers
- Sex
- Female
- Sole proprietor
- No
- License
- 20676 (CA)
Specialties & taxonomies
Other 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
2 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
- 2023-10-02
- Last updated
- 2025-11-20
- Certified
- 2025-11-20
Frequently asked questions
- What is Sierra Simmons's NPI number?
- Sierra Simmons's National Provider Identifier (NPI) is 1033999651, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sierra Simmons's specialty?
- Sierra Simmons is listed in the NPPES registry with a primary specialty of Case Manager/Care Coordinator (Other Service Providers).
- Where is Sierra Simmons located?
- Sierra Simmons's practice location on file with NPPES is 2085 Rustin Ave # 3, Riverside, CA 92507-2498.
- What is Sierra Simmons's phone number?
- The practice phone number listed in the NPPES registry for Sierra Simmons is (951) 955-2105.
- Is Sierra Simmons's NPI active?
- Yes — Sierra Simmons's NPI (1033999651) is active in the NPPES registry as of the last update on 2025-11-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.