Maryann Blackwell, R.N.
NPI 1518179530 · Psychiatric/Mental Health Registered Nurse · Oakland, CA
Maryann Blackwell, R.N. is a Psychiatric/Mental Health Registered Nurse provider in Oakland, CA (NPI 1518179530).
Provider details
- NPI number
- 1518179530
- Entity type
- Individual
- Primary specialty
- Psychiatric/Mental Health Registered NurseNursing Service Providers
- Credential
- R.N.
- Sex
- Female
- Sole proprietor
- No
- License
- 635931 (CA)
Specialties & taxonomies
Nursing 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
- 2007-05-03
- Last updated
- 2007-07-08
Frequently asked questions
- What is Maryann Blackwell's NPI number?
- Maryann Blackwell's National Provider Identifier (NPI) is 1518179530, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Maryann Blackwell's specialty?
- Maryann Blackwell is listed in the NPPES registry with a primary specialty of Psychiatric/Mental Health Registered Nurse (Nursing Service Providers).
- Where is Maryann Blackwell located?
- Maryann Blackwell's practice location on file with NPPES is 411 30th St Ste 314, Oakland, CA 94609-3303.
- What is Maryann Blackwell's phone number?
- The practice phone number listed in the NPPES registry for Maryann Blackwell is (510) 273-4200.
- Is Maryann Blackwell's NPI active?
- Yes — Maryann Blackwell's NPI (1518179530) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.