Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Anastasija Steffek, FNP

Individual provider Family Nurse Practitioner · NPI 1639023732

Anastasija Steffek, FNP is a Nurse Practitioner in Chesterton, Indiana. Qualified in 2025, 1 year ago. Practices with Minuteclinic Diagnostics of Indiana LLC, a 118-clinician group and accepts Medicare assignment. Licensed in Indiana.

Years since qualifying
1
Licensed in
IN
In the registry since
2026
What do these letters mean?
FNP — Family Nurse Practitioner
A nurse practitioner who treats patients of all ages, much like a family doctor.

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Practice location Address checks out

505 E 1100 N
Chesterton, IN 46304-9697
Phone: (219) 926-3420
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Nurse Practitioner (primary) Taxonomy 363LF0000X · Licence 71017791A (IN)

Record details

NPI number1639023732
Entity typeIndividual (Type 1)
GenderFemale
Credentials FNP
Sole proprietorNo
NPI enumeratedFebruary 25, 2026
Last updated in NPPESFebruary 26, 2026
Certification dateFebruary 26, 2026

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2025 (1 years in practice)
Group practice Minuteclinic Diagnostics Of Indiana Llc — 118 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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