Anastasija Steffek, FNP
NPI 1639023732 · Family Nurse Practitioner · Chesterton, IN
Anastasija Steffek, FNP is a Family Nurse Practitioner provider in Chesterton, IN (NPI 1639023732).
Provider details
- NPI number
- 1639023732
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP
- Sex
- Female
- Sole proprietor
- No
- License
- 71017791A (IN)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
Under 1 yr in 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
- 2026-02-25
- Last updated
- 2026-02-26
- Certified
- 2026-02-26
Frequently asked questions
- What is Anastasija Steffek's NPI number?
- Anastasija Steffek's National Provider Identifier (NPI) is 1639023732, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Anastasija Steffek's specialty?
- Anastasija Steffek is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Anastasija Steffek located?
- Anastasija Steffek's practice location on file with NPPES is 505 E 1100 N, Chesterton, IN 46304-9697.
- What is Anastasija Steffek's phone number?
- The practice phone number listed in the NPPES registry for Anastasija Steffek is (219) 926-3420.
- Is Anastasija Steffek's NPI active?
- Yes — Anastasija Steffek's NPI (1639023732) is active in the NPPES registry as of the last update on 2026-02-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.