IndividualActive
Maria Charissa Calderon, RN
NPI 1255077400 · Registered Nurse · Castro Valley, CA
Maria Charissa Calderon, RN is a Registered Nurse provider in Castro Valley, CA (NPI 1255077400).
Provider details
- NPI number
- 1255077400
- Entity type
- Individual
- Primary specialty
- Registered NurseNursing Service Providers
- Credential
- RN
- Sex
- Female
- Sole proprietor
- Yes
- License
- 95245208 (CA)
Specialties & taxonomies
Nursing Service Providers
Profile Score
Established profile(60/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
4 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
21984 Redwood Rd
Castro Valley, CA 94546-6438
Phone: (510) 688-7585
Street-level locationGet directions
Mailing address
21984 Redwood Rd
Castro Valley, CA 94546-6438
Registry dates
- Enumerated
- 2022-05-10
- Last updated
- 2022-05-10
- Certified
- 2022-05-10
Frequently asked questions
- What is Maria Charissa Calderon's NPI number?
- Maria Charissa Calderon's National Provider Identifier (NPI) is 1255077400, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Maria Charissa Calderon's specialty?
- Maria Charissa Calderon is listed in the NPPES registry with a primary specialty of Registered Nurse (Nursing Service Providers).
- Where is Maria Charissa Calderon located?
- Maria Charissa Calderon's practice location on file with NPPES is 21984 Redwood Rd, Castro Valley, CA 94546-6438.
- What is Maria Charissa Calderon's phone number?
- The practice phone number listed in the NPPES registry for Maria Charissa Calderon is (510) 688-7585.
- Is Maria Charissa Calderon's NPI active?
- Yes — Maria Charissa Calderon's NPI (1255077400) is active in the NPPES registry as of the last update on 2022-05-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.