Providers
SARAH WILLIAMSON, MSW,LCSW
NPI 1205283892, individual, Greeley, CO, Social Worker, Clinical
5
Evidence tier
informational
- 76% of Medicaid dollars are on codes with a history of abuse.
score 33 of 100, rank 10584, $884K at stake
National provider registry
From the CMS NPPES Registry, refreshed daily.
| Name | SARAH WILLIAMSON, MSW,LCSW |
| Type | Individual, sole proprietor |
| Status | Active |
| NPI issued | May 24, 2016, last updated March 7, 2025 |
| Practice location | 1023 39TH AVE STE K, Greeley, CO 80634-2502, 970-251-8649 |
| Mailing address | 1261 WILD BASIN RD, Severance, CO 80550-2402 |
| Specialties | Social Worker, Clinical (1041C0700X, primary) |
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 | |
|---|---|---|---|---|---|---|---|
| 90837 | Psychotherapy, 1 hourhistory of abuse | $1.0M | 72% | $348 | $191 (top 5% from $442) | 90th percentile | |
| 90834 | Psychotherapy, 45 minutes | $229K | 16% | $200 | $101 (top 5% from $318) | 84th percentile | |
| H2014 | Skills training and development per 15 minhistory of abuse | $45K | 3% | $428 | $298 (top 5% from $3K) | 64th percentile | |
| 90791 | Psychiatric diagnostic evaluation | $36K | 2% | $142 | $105 (top 5% from $228) | 80th percentile | |
| 90846 | Family psychotherapy without patient, 50 minutes | $27K | 2% | $132 | $113 (top 5% from $277) | 61st percentile | |
| 90847 | Family psychotherapy with patient, 50 minutes | $25K | 2% | $136 | $130 (top 5% from $458) | 53rd percentile | |
| 90832 | Psychotherapy, 30 minutes | $14K | 1% | $99 | $59 (top 5% from $239) | 80th percentile | |
| T1017 | Targeted case management each 15 min | $10K | 1% | $62 | $167 (top 5% from $808) | 25th percentile |
In this area
6 providers in Weld County, CO carry an indicator in the public record, with $14.3M at stake between them. The most common is more hours than a day holds, on 5 of them, followed by part of a provider network on 1.
| tier | provider | at stake | why |
|---|---|---|---|
| 3 | CENTER AT CENTERPLACE, LLC Greeley, CO, ranked 4655 | $0 |
|
| 4 | MICHAEL MULLIN Greeley, CO, ranked 7454 | $5.0M |
|
| 4 | THAD MAKOWSKI Greeley, CO, ranked 7609 | $2.6M |
|
| 4 | NICHOLAS BERGER Longmont, CO, ranked 7758 | $1.4M |
|
| 4 | SARAH POFAHL Greeley, CO, ranked 8421 | $4.7M |
|
| 5 | HEATHER DAIGLE Greeley, CO, ranked 10224 | $598K |
|
Recent enforcement in CO
All releasesDepartment of Justice and HHS-OIG releases for this state, newest first. Each opens in a new tab.
DOJIndictedJun 23, 2026
Colorado Man Charged In Medicaid Fraud Scheme Connected To Arapahoe County Adult Daycare
Omer offered three $500 kickback payments in exchange for referrals of Medicaid beneficiaries for adult daycare, and $10,000 in other kickback payments described as marketing expenses or office supply, to induce beneficiaries to attend Nadina Adult Daycare Center.
DOJCivil settlementNov 24, 2025
Southern Colorado Hospital and Doctors Agree to Pay $650,000 to Resolve Allegations That They Unlawfully Prescribed Opioids and Other Controlled Substances
Three physicians employed by Mt. San Rafael Hospital allegedly issued invalid prescriptions for controlled substances including opioids not for a legitimate medical purpose or outside the usual course of professional practice, and caused claims for those prescriptions to be submitted to Medicare and other federal health care programs.
DOJCivil settlementDec 3, 2024
$2 Million Resolves Kickback Allegations Relating to Denver Neuromonitoring Company
Assure paid remuneration to surgeons through joint venture companies to induce them to order intraoperative neuromonitoring services, resulting in claims submitted to federally funded healthcare programs.
DOJIndictedSep 24, 2024
Seven People Charged With Over $40 Million In Medicare And Medicaid Fraud
Defendants, through genetic testing laboratories they owned and operated, paid kickbacks and bribes to marketing companies for referrals for medically unnecessary genetic testing, resulting in more than $40 million in false and fraudulent claims paid by Medicare and Colorado Medicaid, and three defendants laundered the proceeds.
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.