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Ellen Castellanos, RN, CPNP
NPI 1659303345 · Registered Nurse · Atascadero, CA
Ellen Castellanos, RN, CPNP is a Registered Nurse provider in Atascadero, CA (NPI 1659303345).
Provider details
- NPI number
- 1659303345
- Entity type
- Individual
- Primary specialty
- Registered NurseNursing Service Providers
- Credential
- RN, CPNP
- Sex
- Female
- Sole proprietor
- No
- License
- RN 233662 (CA)
Specialties & taxonomies
Nursing Service Providers
Profile Score
Detailed profile(91/100 index)
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
7700 Morro Rd
Atascadero, CA 93422-4435
Phone: (805) 466-6622
Fax: (805) 461-0361
Street-level locationGet directions
Mailing address
Po Box 2279
Atascadero, CA 93423-2279
Registry dates
- Enumerated
- 2006-07-06
- Last updated
- 2007-07-09
Frequently asked questions
- What is Ellen Castellanos's NPI number?
- Ellen Castellanos's National Provider Identifier (NPI) is 1659303345, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ellen Castellanos's specialty?
- Ellen Castellanos is listed in the NPPES registry with a primary specialty of Registered Nurse (Nursing Service Providers).
- Where is Ellen Castellanos located?
- Ellen Castellanos's practice location on file with NPPES is 7700 Morro Rd, Atascadero, CA 93422-4435.
- What is Ellen Castellanos's phone number?
- The practice phone number listed in the NPPES registry for Ellen Castellanos is (805) 466-6622.
- Is Ellen Castellanos's NPI active?
- Yes — Ellen Castellanos's NPI (1659303345) is active in the NPPES registry as of the last update on 2007-07-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.