Koo, Nathaniel

Koo, Nathaniel was paid $4K by Medicaid between Jul 2019 and Apr 2023, across 2 billing codes. Its largest line is 99203, doctor's office visit, new patient (routine) — 89% of everything it billed.

33Billing provider infoKOO, NATHANIEL
CHICAGO, IL 60612

33aNPI1467626184assigned 04/14/2008

33bProvider typePediatric Surgery Physician

28Total paid$4K

24GClaims45

24DCodes billed2

24AFirst – last monthJul 2019 – Apr 2023

Compared with peers

Next to other Pediatric Surgery Physician providers in Illinois

Rank by total paid#7 of 14

Median peer was paid$4K

This provider vs. median1.1×

Peers share this provider's primary NPPES type and state. Size alone says nothing about billing quality: a big agency or a hospital system is expected to sit far above the median.

Box 24A · Dates of service

Paid by month

Paid that monthNov–Dec 2024: claims still arriving when the file was cut, so these months run low for every provider

By year, as a table

Year	Claims	Paid
2019	18	$3K
2021	14	$653.18
2023	13	$426.56

Box 24 · Service lines

What it billed for

Code	Service	Share	Claims	Bene. records	Paid
99203	Doctor's office visit, new patient (routine)Office or other outpatient visit for the evaluation and management of a new patient, low complexity	89%	32	30	$3K
99202	Office or other outpatient visit for the evaluation and management of a new patient, straightforward	11%	13	13	$426.56

Claims and beneficiary counts add up across code × month rows, so one patient seen every month counts many times. Rows with fewer than 12 claims are suppressed by HHS, so small lines can be missing.