Sandra Messinger
NPI 1649398520 · Addiction (Substance Use Disorder) Counselor · Riverside, CA
Sandra Messinger is a Addiction (Substance Use Disorder) Counselor provider in Riverside, CA (NPI 1649398520).
Provider details
- NPI number
- 1649398520
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers
- Sex
- Female
- Sole proprietor
- Yes
Specialties & taxonomies
Behavioral Health & Social Service Providers
- Case Manager/Care Coordinator171M00000X
Other 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
- 2007-03-27
- Last updated
- 2021-10-14
- Certified
- 2021-10-14
Frequently asked questions
- What is Sandra Messinger's NPI number?
- Sandra Messinger's National Provider Identifier (NPI) is 1649398520, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sandra Messinger's specialty?
- Sandra Messinger is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is Sandra Messinger located?
- Sandra Messinger's practice location on file with NPPES is 6860 Brockton Ave Ste 9, Riverside, CA 92506-3816.
- What is Sandra Messinger's phone number?
- The practice phone number listed in the NPPES registry for Sandra Messinger is (951) 224-9940.
- Is Sandra Messinger's NPI active?
- Yes — Sandra Messinger's NPI (1649398520) is active in the NPPES registry as of the last update on 2021-10-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.