Maryann Izzo
NPI 1538389879 · Addiction (Substance Use Disorder) Counselor · Downey, CA
Maryann Izzo is a Addiction (Substance Use Disorder) Counselor provider in Downey, CA (NPI 1538389879).
Provider details
- NPI number
- 1538389879
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers
- Sex
- Female
- Sole proprietor
- No
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
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
- 2007-04-27
- Last updated
- 2007-07-08
Frequently asked questions
- What is Maryann Izzo's NPI number?
- Maryann Izzo's National Provider Identifier (NPI) is 1538389879, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Maryann Izzo's specialty?
- Maryann Izzo is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is Maryann Izzo located?
- Maryann Izzo's practice location on file with NPPES is 11500 Paramount Blvd, Downey, CA 90241-4530.
- What is Maryann Izzo's phone number?
- The practice phone number listed in the NPPES registry for Maryann Izzo is (562) 947-3835.
- Is Maryann Izzo's NPI active?
- Yes — Maryann Izzo's NPI (1538389879) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.