Mary Yost
NPI 1730748260 · Addiction (Substance Use Disorder) Counselor · Portsmouth, NH
Mary Yost is a Addiction (Substance Use Disorder) Counselor organization in Portsmouth, NH (NPI 1730748260).
Provider details
- NPI number
- 1730748260
- Entity type
- Organization
- Primary specialty
- Addiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers
- Organization subpart
- No
- Authorized official
- Elizabeth Carmer, Administrative Assistant(603) 988-1015
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
7 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
- 2019-06-09
- Last updated
- 2019-06-09
Frequently asked questions
- What is Mary Yost's NPI number?
- Mary Yost's National Provider Identifier (NPI) is 1730748260, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Mary Yost?
- Mary Yost is classified in the NPPES registry as Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is Mary Yost located?
- Mary Yost's practice location on file with NPPES is 212 Islington St, Portsmouth, NH 03801-4204.
- What is Mary Yost's phone number?
- The practice phone number listed in the NPPES registry for Mary Yost is (603) 387-2256.
- Who is the authorized official for Mary Yost?
- The authorized official listed on Mary Yost's NPPES record is Elizabeth Carmer, Administrative Assistant. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Mary Yost's NPI active?
- Yes — Mary Yost's NPI (1730748260) is active in the NPPES registry as of the last update on 2019-06-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.