DR. TIMOTHY RAYMOND NIEDZIELAK DO
NPI 1972028421
Orthopaedic Surgery in Rockford, IL
About Dr. Timothy Raymond Niedzielak Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. TIMOTHY RAYMOND NIEDZIELAK DO (NPI 1972028421) is an individual orthopaedic surgery provider in Rockford, Illinois, licensed in Illinois (036165587) and active in the NPI registry since August 2017. He is enrolled in Medicare PECOS, is affiliated with Javon Bea Hospital, and maintains a secondary practice location in Columbia.
NPPES Registry Identity
Specialties & Licenses 3
Secondary Practice Location 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
Dr. Timothy Raymond Niedzielak 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 Timothy Niedzielak reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Rockford, IL 61114
- Reassigned Medicare billing, Illinois enrollment
- 1,375 clinicians in this Medicare group
Rapid City, SD 57702
- Reassigned Medicare billing, South Dakota enrollment
- 87 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 3
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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Javon Bea Hospital
Acute Care Hospitals · Rockford, ILMonument Health Rapid City Hospital
Acute Care Hospitals · Rapid City, SDPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 61114 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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.
ROCKFORD, IL 61114
ROCKFORD, IL 61114
ROCKFORD, IL 61114
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 Timothy Niedzielak's NPI number?
The NPI number for Timothy Niedzielak is 1972028421. It was assigned to this individual provider in the NPPES registry on August 6, 2017.
Where is Timothy Niedzielak located?
Timothy Niedzielak practices at 8201 E Riverside Blvd, Rockford, IL 61114. The listed phone number is (815) 971-7000.
What is Timothy Niedzielak's specialty?
The primary specialty registered for this NPI is Orthopaedic Surgery with taxonomy code 207X00000X.
Is Timothy Niedzielak enrolled in Medicare?
Yes. Timothy Niedzielak 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 Timothy Niedzielak's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Timothy Niedzielak reassigns Medicare benefits to 2 organizations: Rockford Health Physicians (Rockford, IL) and Acute Care Surgery Of South Dakota PC (Rapid City, SD). 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 Timothy Niedzielak's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Timothy Niedzielak accept?
Health plans from Anthem Blue Cross and Blue Shield, MercyCare, MercyCare Health Plans, Oscar Insurance Company and UnitedHealthcare list Timothy Niedzielak 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 Timothy Niedzielak affiliated with any hospitals?
According to CMS data, Timothy Niedzielak is affiliated with Javon Bea Hospital and Monument Health Rapid City Hospital.
When was this NPI record last updated?
The NPPES record for Timothy Niedzielak was last updated on September 12, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.