Providers
PATRICK KEE CHAU, M.D.
NPI 1992766299, individual, Sioux City, IA, Psychiatry & Neurology, Child & Adolescent Psychiatry
1
Evidence tier
documented action, then payment
- Listed on the WA Medicaid exclusion list since May 26, 2006.
- Medicaid still paid claims in 41 later months, $489,411 in total.
- Medicaid dollars per patient on code T1015 ($730 per patient-month) sit in the top 5% of every provider billing that code.
- Medicare submitted charges on code 96127 are 3.3 times the typical charge-to-allowed ratio for that code.
score 100 of 100, rank 4, $489K at stake
Paid after the action
Months in which Medicaid paid claims for this provider after a public action that should have triggered a screening check. This is a record of payments, not a determination that they were improper.
| list | identity check | action date | window closed | months paid after | first | last | paid after | 12 months before |
|---|---|---|---|---|---|---|---|---|
| WA Medicaid exclusion list state list extracted from https://www.hca.wa.gov/assets/billers-and-providers/termination-exclusion.xlsx (pandas claude colmap) | Exact NPI, name verified | May 26, 2006 | still open | 41 | Dec 2020 | Dec 2024 | $489K | $0 |
National provider registry
From the CMS NPPES Registry, refreshed daily.
| Name | PATRICK KEE CHAU, M.D. |
| Type | Individual |
| Status | Active |
| NPI issued | March 28, 2006, last updated September 12, 2024 |
| Practice location | 3549 SOUTHERN HILLS DR, Sioux City, IA 51106-4736, 712-274-6729 |
| Mailing address | 1004 FIR ST, Longview, WA 98632-2527 |
| Specialties | Psychiatry & Neurology, Child & Adolescent Psychiatry (2084P0804X, primary, license MD00030085 WA) |
Procedures billed
The specific codes behind the dollars. Medicaid figures come from T-MSIS (2018 to 2024) and are compared with every other provider billing the same code; Medicare figures come from the 2024 physician and supplier file and compare this provider's submitted charge with what Medicare allowed, against the usual ratio for that code.
Medicaid, largest codes
| code | what it is | paid | share | per patient-month | typical | rank among providers | |
|---|---|---|---|---|---|---|---|
| T1015 | Medicaid service code | $385K | 79% | $730 | $182 (top 5% from $488) | 98th percentile | |
| 99213 | Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | $65K | 13% | $118 | $44 (top 5% from $110) | 96th percentile | |
| 99214 | Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | $36K | 7% | $45 | $60 (top 5% from $133) | 30th percentile | |
| 96127 | Assessment of emotional or behavioral problems | $2K | 0% | $60 | $4.12 (top 5% from $19) | too few months to rank | |
| 99304 | Initial nursing facility care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | $621 | 0% | $19 | $14 (top 5% from $148) | too few months to rank | |
| 99205 | New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more | $577 | 0% | $48 | $128 (top 5% from $249) | too few months to rank | |
| 36415 | Insertion of needle into vein for collection of blood sample | $300 | 0% | $5.27 | $1.97 (top 5% from $12) | too few months to rank | |
| 99309 | Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes | $200 | 0% | $4.76 | $21 (top 5% from $84) | too few months to rank |
Medicare Part B 2024, largest codes
| code | what it is | services | beneficiaries | paid | submitted per service | allowed per service | charge to allowed | usual for this code |
|---|---|---|---|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | 280 | 86 | $22K | $200 | $112 | 1.8x | 2.3x (90th percentile 3.8x) |
| 99213 | Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | 76 | 17 | $4K | $226 | $83 | 2.7x | 2.2x (90th percentile 3.8x) |
| 96127 | Assessment of emotional or behavioral problems | 144 | 48 | $423 | $47 | $4 | 12.3x | 3.7x (90th percentile 7.2x) |
A submitted charge many times the allowed amount is common and lawful; it matters when it is far above what other providers submit for the same code.
In this area
3 providers in Woodbury County, IA carry an indicator in the public record, with $6.6M at stake between them. The most common is more hours than a day holds, on 2 of them, followed by named in an enforcement record on 1.
| tier | provider | at stake | why |
|---|---|---|---|
| 3 | AMY HECHT Sioux City, IA, ranked 1765 | $0 |
|
| 4 | RANDALL WOOD Sioux City, IA, ranked 7483 | $4.2M |
|
| 4 | DAVID PAULSRUD Sioux City, IA, ranked 8649 | $2.4M |
|
Recent enforcement in IA
All releasesDepartment of Justice and HHS-OIG releases for this state, newest first. Each opens in a new tab.
DOJComplaint filedJun 29, 2026
Southern District of Iowa Announces Cases Related to the 2026 National Health Care Fraud Takedown
A civil False Claims Act complaint alleges a plastic surgeon submitted only artificially-inflated list price invoices for skin substitute products to a Medicare contractor, and separately three health systems agreed to pay $4,643,128 after self-disclosing overuse and over-billing of the Impella heart pump device.
DOJIndictedJun 24, 2026
National Health Care Fraud Takedown Results in 455 Defendants Charged in Connection with More Than $6.5 Billion in Alleged Fraud
A home care company and its owner were indicted for submitting claims to the Veterans Community Care Program for home health care services not actually provided, including services claimed after a veteran client died, and a plastic surgery practice and its owner were sued for giving Medicare false invoices for skin substitute products used to set reimbursement.
DOJPleaded guiltyNov 13, 2025
Iowa Attorney Pleads Guilty to Making a False Statement to Iowa Medicaid
An attorney submitted documents to Iowa Medicaid to qualify an elderly client for nursing home benefits, including a statement that a 1961 Rolls Royce had a fair market value of $194,000 when he knew it did not.
DOJCivil settlementJan 16, 2025
Two Iowa Healthcare Practitioners Settle Allegations for False Submission of Claims to Federal Healthcare Programs in Telemedicine Scheme
Two practitioners billed Medicare for office visits and medical discussions they did not provide and signed orders for medically unnecessary durable medical equipment such as orthotic braces based on recorded cold calls to beneficiaries they never contacted.
DOJSentencedJul 3, 2024
Illegal Alien and Two Others Sentenced to Federal Prison in Organ Transplant Scheme
Herrera Rosales assumed another person's identity, provided to him by Herrera and Guerra, to apply for and obtain more than $500,000 in Medicare, Minnesota Medicaid, and Social Security benefits, including a federally funded kidney transplant.
Referral packet
The packet is a draft for a reviewer. It reads every public record behind this case, states what the records show with a citation for each finding, names the regulation each finding relates to, and lists the ordinary explanations to rule out first. It never asserts intent.