Physician

Joanna M Niemiec, MD

According to 2025 Medicare claims, Joanna Niemiec, MD (NPI: 1821016791) practices nephrology in the Rockford, IL market, with the plurality of this provider's patient population coming from Winnebago, IL. This provider's primary affiliated billing organization is RNA OF ROCKFORD, PLLC (NPI: 1336326388; TIN: 26-1497110) and primary practice location at 53511-2230.

Niemiec's data goes back to 2015 and runs through 2024. For example, in 2024, this provider had 767 traditional Medicare patients, billed 5,421 HCPCS/CPT codes, and received $300,023 in Medicare payments. The top billing code was 99214 (Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more). Part D data shows 2,530 prescription claims across 546 beneficiaries totaling $213,392 in drug costs, led by Farxiga (Dapagliflozin Propanediol). No Open Payments records. You can download detailed data with all billing codes (2015-2024). For more recent data, please contact us.

Over the past 10 years, this provider's Medicare Part B carrier billing has changed little. Concurrently, Part D prescription costs have moved up and down with repeated peaks and valleys, starting at $143,564 and ending at $213,392. For DME billing, this provider has fewer than 5 years of reported data, so a reliable trend cannot be assigned.

Part B Carrier Billing Trend

Medicare payment trend, with N of patients and claim lines in the table.

Year	Patients	Clm Lines	Payment
2015	782	7,826	$206,564
2016	816	7,810	$276,881
2017	884	10,749	$227,894
2018	885	10,276	$289,751
2019	887	5,452	$291,770
2020	755	3,531	$231,603
2021	897	5,379	$291,933
2022	926	3,171	$299,663
2023	838	3,380	$266,589
2024	767	5,421	$300,023

Part D Events Trend

Drug cost trend, with N of patients and prescription claims in the table.

Year	Patients	Claims	Drug Cost
2015	218	1,342	$143,564
2016	285	1,560	$164,245
2017	285	1,547	$204,281
2018	274	1,375	$110,294
2019	285	1,170	$85,757
2020	282	1,279	$114,334
2021	340	1,302	$79,669
2022	368	1,629	$111,217
2023	450	2,049	$137,889
2024	546	2,530	$213,392

DME Billing Trend

Medicare payment trend, with N of patients and DME claim records in the table.

No connected DME records

* / # = suppressed by CMS; 0 = reported zero; N/R = not reported or blank.

Top 5 Part B carrier billing codes in 2024

By total payments.

Code	Description	Patients	Clm Lines	Total Payment
99214	Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	443	696	$90
99232	Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	144	431	$62
99490	Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month	141	832	$50
99439	Chronic care management services for two or more chronic conditions, additional 20 minutes of clinical staff time directed by health care professional, per calendar month	139	466	$38
G2211	Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's	457	749	$12

Top 5 Part D drugs in 2024

By total drug costs.

Drug	Generic	Claims	Total Day Supply	Total Drug Cost
Farxiga	Dapagliflozin Propanediol	105	4,740	$87,539
Cinacalcet Hcl	Cinacalcet Hcl	77	5,298	$25,875
Jardiance	Empagliflozin	13	1,170	$21,487
Calcitriol	Calcitriol	753	60,206	$12,798
Sevelamer Carbonate	Sevelamer Carbonate	36	2,158	$9,523

Top 5 DME services in 2024

No connected or detailed DME service-level records for 2024.

Open Payments Summary

No connected Open Payments records were found for this physician in General Payments, Research Payments, or Ownership / Investment Interests.

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FAQ

What Medicare data is available for Joanna M. Niemiec, MD?

Tedicare shows public-source Medicare data for Joanna M. Niemiec, MD (NPI 1821016791), including provider identity, specialty, market context, Medicare Part B activity, Part D prescribing, DME records, Open Payments where available, billing organization details, and ACO affiliation signals where available. Profile data covers 2015-2024, with current attribution based on 2025 claims where available.

Does Joanna M. Niemiec, MD have ACO affiliation data?

No ACO affiliation record is shown in the available Tedicare data for this profile.

What billing organization is linked to Joanna M. Niemiec, MD?

Joanna M. Niemiec, MD is linked to RNA OF ROCKFORD, PLLC (billing NPI 1336326388) in the available physician profile data.

Does Joanna M. Niemiec, MD have Open Payments data?

No connected Open Payments records are shown for this physician in the available General Payments, Research Payments, or Ownership / Investment Interests data.

Can I download physician-level Medicare data from Tedicare?

Yes. Tedicare provides sample physician export data and paid custom physician data exports for research, planning, outreach, and market analysis. Exports can include physician profile fields, market and specialty context, billing organization details, ACO affiliation signals where available, and Medicare utilization data.