Aleksandra Siwik, RN
NPI 1366226771 · Critical Care Medicine Registered Nurse · Tucson, AZ
Aleksandra Siwik, RN is a Critical Care Medicine Registered Nurse provider in Tucson, AZ (NPI 1366226771).
Provider details
- NPI number
- 1366226771
- Entity type
- Individual
- Primary specialty
- Critical Care Medicine Registered NurseNursing Service Providers
- Credential
- RN
- Sex
- Female
- Sole proprietor
- No
- License
- 95101278 (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
2 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
- 2023-08-24
- Last updated
- 2023-08-24
- Certified
- 2023-08-24
Frequently asked questions
- What is Aleksandra Siwik's NPI number?
- Aleksandra Siwik's National Provider Identifier (NPI) is 1366226771, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Aleksandra Siwik's specialty?
- Aleksandra Siwik is listed in the NPPES registry with a primary specialty of Critical Care Medicine Registered Nurse (Nursing Service Providers).
- Where is Aleksandra Siwik located?
- Aleksandra Siwik's practice location on file with NPPES is 1200 East University Blvd, Tucson, AZ 85721-0001.
- What is Aleksandra Siwik's phone number?
- The practice phone number listed in the NPPES registry for Aleksandra Siwik is (520) 621-3237.
- Is Aleksandra Siwik's NPI active?
- Yes — Aleksandra Siwik's NPI (1366226771) is active in the NPPES registry as of the last update on 2023-08-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.