Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Anna Kastanas, APN

Individual provider Nurse Practitioner · NPI 1609310259

Anna Kastanas, APN is a Nurse Practitioner in Crystal Lake, Illinois. Qualified in 2016, 10 years ago. Practices with Chestnut Health of Illinois LLC, a 38-clinician group and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
10
Licensed in
IL
In the registry since
2016
What do these letters mean?
APN — Advanced Practice Nurse
The umbrella title some states use for nurse practitioners and other advanced practice nurses.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

1 S Virginia St
Crystal Lake, IL 60014-5828
Phone: (815) 356-9371
Fax: (815) 356-9428
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Nurse Practitioner (primary) Taxonomy 363L00000X · Licence 209015271 (IL)

Record details

NPI number1609310259
Entity typeIndividual (Type 1)
GenderFemale
Credentials APN
Sole proprietorNo
NPI enumeratedDecember 15, 2016
Last updated in NPPESDecember 15, 2016

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2016 (10 years in practice)
Group practice Chestnut Health Of Illinois Llc — 38 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients173
Services billed 1,619 a service is one billed item, such as a visit, a test or a procedure
Average patient age76

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Colleagues at Chestnut Health of Illinois LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 38 clinicians in the practice; 12 are shown here.

Other providers in Crystal Lake