Mary Hennessey-Peirce, LCSW
NPI 1437237484 · Addiction (Substance Use Disorder) Counselor · Mesa, AZ
Mary Hennessey-Peirce, LCSW is a Addiction (Substance Use Disorder) Counselor provider in Mesa, AZ (NPI 1437237484).
Provider details
- NPI number
- 1437237484
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Female
- Sole proprietor
- No
- License
- 0579 (AZ)
Specialties & taxonomies
Behavioral Health & Social 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
19 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
- 2006-11-01
- Last updated
- 2025-09-11
Frequently asked questions
- What is Mary Hennessey-Peirce's NPI number?
- Mary Hennessey-Peirce's National Provider Identifier (NPI) is 1437237484, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Hennessey-Peirce's specialty?
- Mary Hennessey-Peirce is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is Mary Hennessey-Peirce located?
- Mary Hennessey-Peirce's practice location on file with NPPES is 7254 E Southern Ave, Mesa, AZ 85209.
- What is Mary Hennessey-Peirce's phone number?
- The practice phone number listed in the NPPES registry for Mary Hennessey-Peirce is (602) 617-6595.
- Is Mary Hennessey-Peirce's NPI active?
- Yes — Mary Hennessey-Peirce's NPI (1437237484) is active in the NPPES registry as of the last update on 2025-09-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.