Mary Gregg
NPI 1033954946 · Addiction (Substance Use Disorder) Counselor · Santa Ana, CA
Mary Gregg is a Addiction (Substance Use Disorder) Counselor provider in Santa Ana, CA (NPI 1033954946).
Provider details
- NPI number
- 1033954946
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers
- Sex
- Female
- Sole proprietor
- No
- License
- R1550770224 (CA)
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
1 yr 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
- 2024-07-01
- Last updated
- 2024-07-25
- Certified
- 2024-07-11
Frequently asked questions
- What is Mary Gregg's NPI number?
- Mary Gregg's National Provider Identifier (NPI) is 1033954946, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Gregg's specialty?
- Mary Gregg is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is Mary Gregg located?
- Mary Gregg's practice location on file with NPPES is 1207 E Fruit St, Santa Ana, CA 92701-4206.
- What is Mary Gregg's phone number?
- The practice phone number listed in the NPPES registry for Mary Gregg is (714) 953-9373.
- Is Mary Gregg's NPI active?
- Yes — Mary Gregg's NPI (1033954946) is active in the NPPES registry as of the last update on 2024-07-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.