JAMES KOSTEK DO
NPI 1477085660
Family Medicine in Summit, NJ
About James Kostek Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JAMES KOSTEK DO (NPI 1477085660) is an individual family medicine provider in Summit, New Jersey, licensed in New Jersey (25MB10822000) and active in the NPI registry since March 2017. He is enrolled in Medicare PECOS, is affiliated with Robert Wood Johnson University Hospital, and is a graduate of Other (2017).
NPPES Registry Identity
Specialties & Licenses
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
James Kostek Do 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 Reassignments
2Medicare enrollment records show James Kostek reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
West Orange, NJ 07052
- Reassigned Medicare billing, New Jersey enrollment
- 428 clinicians in this Medicare group
Morristown, NJ 07960
- Reassigned Medicare billing, New Jersey enrollment
- 1,699 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.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Robert Wood Johnson University Hospital
Acute Care Hospitals · New Brunswick, NJRobert Wood Johnson University Hospital - Somerset
Acute Care Hospitals · Somerville, NJPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 07901 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SUMMIT, NJ 07901
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 James Kostek's NPI number?
The NPI number for James Kostek is 1477085660. It was assigned to this individual provider in the NPPES registry on March 28, 2017.
Where is James Kostek located?
James Kostek practices at 99 Beauvoir Ave, Summit, NJ 07901. The listed phone number is (908) 522-2000.
What is James Kostek's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is James Kostek enrolled in Medicare?
Yes. James Kostek 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 organizations bill Medicare for James Kostek's services?
According to the CMS Revalidation Reassignment List (October 2026 release), James Kostek reassigns Medicare benefits to 2 organizations: Rwjbh Primary Care Services (West Orange, NJ) and Practice Associates Medical Group (Morristown, NJ). Each 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 James Kostek's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does James Kostek accept?
Health plans from Ambetter Health, Ambetter Health of Delaware and Oscar Health list James Kostek 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 James Kostek affiliated with any hospitals?
According to CMS data, James Kostek is affiliated with Robert Wood Johnson University Hospital and Robert Wood Johnson University Hospital - Somerset.
When was this NPI record last updated?
The NPPES record for James Kostek was last updated on September 16, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.
# James Kostek, DO · NPI 1477085660
Family Medicine physician in Summit, New Jersey. Individual provider, active in the CMS NPPES registry since March 28, 2017.
## Identity
- **NPI:** 1477085660 (Entity type: Individual)
- **Enumerated:** March 28, 2017
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** 25MB10822000 (New Jersey)
- **Sole proprietor:** No
## Practice location
- **Address:** 99 BEAUVOIR AVE, Summit, NJ 07901-3533
- **Phone:** (908) 522-2000
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Rwjbh Primary Care Services (NPI 1265037501, West Orange, NJ); Practice Associates Medical Group (NPI 1427016385, Morristown, NJ) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2017
## Record status
- **NPPES last updated:** September 16, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1477085660) · Data from the CMS NPPES public registry.