Tess Sivak
NPI 1457838567 · Addiction (Substance Use Disorder) Registered Nurse · Portland, OR
Tess Sivak is a Addiction (Substance Use Disorder) Registered Nurse provider in Portland, OR (NPI 1457838567).
Provider details
- NPI number
- 1457838567
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) Registered NurseNursing Service Providers
- Sex
- Female
- Sole proprietor
- No
- License
- 201805320RN (OR)
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
7 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
- 2018-07-20
- Last updated
- 2018-07-20
Frequently asked questions
- What is Tess Sivak's NPI number?
- Tess Sivak's National Provider Identifier (NPI) is 1457838567, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tess Sivak's specialty?
- Tess Sivak is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Registered Nurse (Nursing Service Providers).
- Where is Tess Sivak located?
- Tess Sivak's practice location on file with NPPES is 1312 Sw Washington St, Portland, OR 97205-2327.
- What is Tess Sivak's phone number?
- The practice phone number listed in the NPPES registry for Tess Sivak is (503) 535-1151.
- Is Tess Sivak's NPI active?
- Yes — Tess Sivak's NPI (1457838567) is active in the NPPES registry as of the last update on 2018-07-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.