JULIA KOSTYUK FNP-BC
NPI 1558766188
Nurse Practitioner - Primary Care in Buchanan, MI
About Julia Kostyuk Fnp-bc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JULIA KOSTYUK FNP-BC (NPI 1558766188) is an individual primary care provider in Buchanan, Michigan, licensed in Michigan (4704309816) and active in the NPI registry since October 2014. She is enrolled in Medicare PECOS, is affiliated with Adventhealth Orlando, and is a graduate of University Of Maryland School Of Medicine (2014).
NPPES Registry Identity
Specialties & Licenses 2
Other Names 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Julia Kostyuk Fnp-bc is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Julia Kostyuk reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Palm Coast, FL 32164
- Reassigned Medicare billing, Florida enrollment
- 112 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 2
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Adventhealth Orlando
Acute Care Hospitals · Orlando, FLPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 49107 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 12
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
BUCHANAN, MI 49107
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 Julia Kostyuk's NPI number?
The NPI number for Julia Kostyuk is 1558766188. It was assigned to this individual provider in the NPPES registry on October 24, 2014. The provider is also known as Yulia Tkachuk.
Where is Julia Kostyuk located?
Julia Kostyuk practices at 1045 E Front St, Buchanan, MI 49107. The listed phone number is (269) 695-5540.
What is Julia Kostyuk's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Primary Care, with taxonomy code 363LP2300X.
Is Julia Kostyuk enrolled in Medicare?
Yes. Julia Kostyuk is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Julia Kostyuk's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Julia Kostyuk reassigns Medicare benefits to Adventist Health System Sunbelt, Inc (Palm Coast, FL). 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 Julia Kostyuk's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Julia Kostyuk accept?
Health plans from Wellpoint list Julia Kostyuk as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Julia Kostyuk affiliated with any hospitals?
According to CMS data, Julia Kostyuk is affiliated with Adventhealth Orlando.
When was this NPI record last updated?
The NPPES record for Julia Kostyuk was last updated on April 3, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 years 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.
# Julia Kostyuk, FNP-BC · NPI 1558766188
Primary Care physician in Buchanan, Michigan. Individual provider, active in the CMS NPPES registry since October 24, 2014.
## Identity
- **NPI:** 1558766188 (Entity type: Individual)
- **Enumerated:** October 24, 2014
- **Primary specialty:** Nurse Practitioner - Primary Care · taxonomy 363LP2300X
- **State license:** 4704309816 (Michigan)
- **Sole proprietor:** No
## Practice location
- **Address:** 1045 E FRONT ST, Buchanan, MI 49107-8474
- **Phone:** (269) 695-5540
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Adventist Health System Sunbelt, Inc (NPI 1396637823, Palm Coast, FL), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Maryland School Of Medicine, class of 2014
## Record status
- **NPPES last updated:** April 3, 2019
---
Source: [NPI Profile](https://npiprofile.com/npi/1558766188) · Data from the CMS NPPES public registry.