ANN JACOB

NPI 1619396207, individual, Springfield, IL, Psychiatry & Neurology, Psychiatry

Evidence tier

informational

Medicaid dollars per patient on code 99233 ($271 per patient-month) sit in the top 5% of every provider billing that code.

score 35 of 100, rank 10113, $978K at stake

National provider registry

From the CMS NPPES Registry, refreshed daily.

Name	ANN JACOB
Type	Individual, sole proprietor
Status	Active
NPI issued	April 10, 2014, last updated September 26, 2018
Practice location	901 W JEFFERSON ST, Springfield, IL 62702-4833, 312-513-0307
Mailing address	PO BOX 19642, 901 WEST JEFFERSON, Springfield, IL 62794-9642
Specialties	Psychiatry & Neurology, Psychiatry (2084P0800X, primary, license 125069375 IL)

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
99233	Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	$632K	59%	$271	$96 (top 5% from $249)	96th percentile
90792	Psychiatric diagnostic evaluation with medical services	$253K	24%	$166	$112 (top 5% from $313)	77th percentile
99239	Hospital discharge day management, more than 30 minutes	$104K	10%	$67	$49 (top 5% from $101)	73rd percentile
99232	Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	$76K	7%	$178	$67 (top 5% from $174)	95th percentile
99238	Hospital discharge day management, 30 minutes or less	$11K	1%	$53	$48 (top 5% from $80)	60th percentile

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
99233	Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	37	19	$3K	$220	$112	2.0x	2.6x (90th percentile 4.7x)

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

5 providers in Sangamon County, IL carry an indicator in the public record, with $468K at stake between them. The most common is part of a provider network, on 3 of them, followed by more hours than a day holds on 2.

tier	provider	at stake	why
3	TRANSITIONS SPRINGFIELD LLC Springfield, IL, ranked 2176	$0	Part of provider network D1-00108, ranked 108 nationally.
3	RUTLEDGE-REGENCY OPERATIONS, LLC Springfield, IL, ranked 4454	$0	Part of provider network D1-00108, ranked 108 nationally.
3	VILLA HEALTH CARE INC Sherman, IL, ranked 5186	$0	Part of provider network D1-00108, ranked 108 nationally.
4	OBIORA ONWUAMEZE Springfield, IL, ranked 7984	$337K	Hours beyond a day in 1 month under one organization, which can be supervisory billing. Records needed. and 1 more
5	KEISHA POWELL Springfield, IL, ranked 10435	$131K	Medicaid dollars per patient on code 99239 ($382 per patient-month) sit in the top 5% of every provider billing that code.

Recent enforcement in IL

All releases

Department of Justice and HHS-OIG releases for this state, newest first. Each opens in a new tab.

DOJChargedJun 23, 2026

United States Attorney Andrew S. Boutros Announces Charges Against Two Chicago-Area Defendants as Part of Department of Justice’s National Healthcare Fraud Takedown

Two Chicago-area defendants were charged, one for selling Medicare beneficiary information and providing fake AI-generated consent recordings so laboratories could bill Medicare for over-the-counter Covid-19 test kits that were never requested or provided, and the other for directing the creation of fake medical records and billing Illinois Medicaid for behavioral health counseling and therapy services that were never provided, including for deceased beneficiaries.

DOJConvictedJun 18, 2026

Suburban Chicago Chiropractor Convicted of Healthcare Fraud

A chiropractor submitted fraudulent claims to Blue Cross Blue Shield of Illinois for health care services that were not actually provided and submitted false patient medical records when the insurer attempted to audit the claims.

DOJSentencedJun 10, 2026

Jacksonville Chiropractor Sentenced to a Year in Prison for Healthcare Fraud and Related Offenses

Rondeau submitted more than 2,000 fraudulent claims to health insurance companies and convinced clients to sign false documents after learning he was under investigation.

DOJCivil settlementMay 8, 2026

Three Affiliated Skilled Nursing Facilities to Pay $300,000 to Resolve False Claims Act Allegations Related to Medically Unnecessary Rehabilitation Services

Three affiliated skilled nursing facilities billed Medicare between Jan. 1, 2014, and Sept. 30, 2019, for physical therapy, occupational therapy, and speech pathology services provided to patients for longer than medically necessary and without regard for patients' individual medical needs, resulting in claims based on inflated RUG levels.

DOJIndictedFeb 12, 2026

Two Foreign Nationals Indicted in Chicago as Part of $10 Million Health Care Fraud Scheme

The indictment alleges the defendants used nominee-owned laboratories and durable medical equipment providers to submit fraudulent claims to Medicare and private health care benefit programs for items and services that were not provided, and laundered and transferred proceeds to Pakistan.

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.

Ask this case

Answers come only from the evidence tables, and every sentence cites the record it used.