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DIANE TRKULJA-CASTRO NURSE PRACTITIONER
NPI 1689109084
Nurse Practitioner - Primary Care in Chesterton, IN

Active since April 24, 2017PECOS Enrolled
3100 VILLAGE PT STE 250, CHESTERTON, IN 46304(219) 440-4835(855) 238-6150 Get Directions Write a Review

NPPES record last updated: January 7, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jan 7, 2025, Nov 20, 2024, Aug 29, 2017 and 1 more (4 updates tracked since 2017).

About Diane Trkulja-castro Nurse Practitioner NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DIANE TRKULJA-CASTRO NURSE PRACTITIONER (NPI 1689109084) is an individual primary care provider in Chesterton, Indiana, licensed in Indiana (71007089A) and active in the NPI registry since April 2017. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1689109084
Entity TypeIndividualFemale
Primary Taxonomy363LP2300X
Provider Legal NameDIANE TRKULJA-CASTROCredential: NURSE PRACTITIONER
Location Address3100 VILLAGE PT STE 250Chesterton, IN 46304-9695
Mailing Address3100 Village Pt Ste 250Chesterton, IN 46304-9695 · (219) 440-4835 · Fax (855) 238-6150
Phone(219) 440-4835
Fax(855) 238-6150
Sole ProprietorNo
Enumeration DateApril 24, 2017
Last NPPES UpdateJanuary 7, 20254 updates tracked since enumeration
NPPES CertifiedJanuary 7, 2025
✔ NPI 1689109084 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyNurse Practitioner · Primary CarePhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LP2300X
License✔ Licensed in IN · 71007089A
Also ListedRegistered NurseTaxonomy 163W00000X · License 28187141A (IN)
Also ListedNurse Practitioner · FamilyTaxonomy 363LF0000X · License 71007089A (IN)
3100 VILLAGE PT STE 250, Chesterton, IN 46304
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Diane Trkulja-castro Nurse Practitioner is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Diane Trkulja-castro reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Villagemd Indiana, PC
16 mi
Family Medicine
6097 BROADWAY
Merrillville, IN 46410
  • Reassigned Medicare billing, Indiana enrollment
  • 19 clinicians in this Medicare group
NPI 1336676923 (888) 975-1055

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 46304 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$82.04 typical visit price
range $53.07 – $161.76
Typical copayment $20.51 (range $13.26 – $40.44)
Most-billed visit code 99203
Established Patient
$94.22 typical visit price
range $16.93 – $132.22
Typical copayment $23.55 (range $4.23 – $33.05)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Diane Trkulja-castro's NPI number?

The NPI number for Diane Trkulja-castro is 1689109084. It was assigned to this individual provider in the NPPES registry on April 24, 2017.

Where is Diane Trkulja-castro located?

Diane Trkulja-castro practices at 3100 Village Pt Ste 250, Chesterton, IN 46304. The listed phone number is (219) 440-4835.

What is Diane Trkulja-castro's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Primary Care, with taxonomy code 363LP2300X.

Is Diane Trkulja-castro enrolled in Medicare?

Yes. Diane Trkulja-castro is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Diane Trkulja-castro's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Diane Trkulja-castro reassigns Medicare benefits to Villagemd Indiana, PC (Merrillville, IN). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Diane Trkulja-castro's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Diane Trkulja-castro was last updated on January 7, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 21 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.