Teresa Massingill
NPI 1154748820 · Addiction (Substance Use Disorder) Counselor · Clearlake, CA
Teresa Massingill is a Addiction (Substance Use Disorder) Counselor provider in Clearlake, CA (NPI 1154748820).
Provider details
- NPI number
- 1154748820
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers
- Sex
- Female
- Sole proprietor
- No
- License
- RI-M1311251251 (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
12 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
- 2014-03-19
- Last updated
- 2014-03-19
Frequently asked questions
- What is Teresa Massingill's NPI number?
- Teresa Massingill's National Provider Identifier (NPI) is 1154748820, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Teresa Massingill's specialty?
- Teresa Massingill is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is Teresa Massingill located?
- Teresa Massingill's practice location on file with NPPES is 7000b S Center Dr, Clearlake, CA 95422-8131.
- What is Teresa Massingill's phone number?
- The practice phone number listed in the NPPES registry for Teresa Massingill is (707) 994-6494.
- Is Teresa Massingill's NPI active?
- Yes — Teresa Massingill's NPI (1154748820) is active in the NPPES registry as of the last update on 2014-03-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.