Darwin Ryan Alfonso
NPI 1679245237 · Licensed Vocational Nurse · Sacramento, CA
Darwin Ryan Alfonso is a Licensed Vocational Nurse provider in Sacramento, CA (NPI 1679245237).
Provider details
- NPI number
- 1679245237
- Entity type
- Individual
- Primary specialty
- Licensed Vocational NurseNursing Service Providers
- Sex
- Male
- Sole proprietor
- Yes
- License
- 693296 (CA)
Specialties & taxonomies
Nursing Service Providers
Nursing & Custodial Care Facilities
Profile Score
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
Mailing address
Registry dates
- Enumerated
- 2021-10-01
- Last updated
- 2021-10-01
- Certified
- 2021-10-01
Frequently asked questions
- What is Darwin Ryan Alfonso's NPI number?
- Darwin Ryan Alfonso's National Provider Identifier (NPI) is 1679245237, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Darwin Ryan Alfonso's specialty?
- Darwin Ryan Alfonso is listed in the NPPES registry with a primary specialty of Licensed Vocational Nurse (Nursing Service Providers).
- Where is Darwin Ryan Alfonso located?
- Darwin Ryan Alfonso's practice location on file with NPPES is 3612 Astral Dr, Sacramento, CA 95827-3508.
- What is Darwin Ryan Alfonso's phone number?
- The practice phone number listed in the NPPES registry for Darwin Ryan Alfonso is (650) 892-4148.
- Is Darwin Ryan Alfonso's NPI active?
- Yes — Darwin Ryan Alfonso's NPI (1679245237) is active in the NPPES registry as of the last update on 2021-10-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.