Brenda Underhill, M.S.
NPI 1255510327 · Addiction (Substance Use Disorder) Counselor · Greenbrae, CA
Brenda Underhill, M.S. is a Addiction (Substance Use Disorder) Counselor provider in Greenbrae, CA (NPI 1255510327).
Provider details
- NPI number
- 1255510327
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers
- Credential
- M.S.
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Behavioral Health & Social Service Providers
- Mental Health Counselor101YM0800X
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
18 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
- 2007-10-25
- Last updated
- 2007-10-25
Frequently asked questions
- What is Brenda Underhill's NPI number?
- Brenda Underhill's National Provider Identifier (NPI) is 1255510327, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Brenda Underhill's specialty?
- Brenda Underhill is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is Brenda Underhill located?
- Brenda Underhill's practice location on file with NPPES is 1251 S Eliseo Dr, Greenbrae, CA 94904-2005.
- What is Brenda Underhill's phone number?
- The practice phone number listed in the NPPES registry for Brenda Underhill is (415) 924-5995.
- Is Brenda Underhill's NPI active?
- Yes — Brenda Underhill's NPI (1255510327) is active in the NPPES registry as of the last update on 2007-10-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.