OBIORA EDWARD ONWUAMEZE, MD, MS, PhD

NPI 1386806453, individual, Springfield, IL, Psychiatry & Neurology, Psychiatry

Evidence tier

structure or single-organization volume

Hours beyond a day in 1 month under one organization, which can be supervisory billing.
Records needed.
Medicaid dollars per patient on code 99232 ($342 per patient-month) sit in the top 5% of every provider billing that code.

score 55 of 100, rank 7984, $337K at stake

Hours billed per day

Medicaid billing converted into hours of hands-on care per day. The lower bound counts one unit per claim line and needs no price; the other two divide dollars by a unit price, the conservative one at 1.5 times the price. The clinician on the claim may be a supervisor under state rules, so billing organizations are counted too.

month	what was found	hours per day, lower bound	hours per day, at price	hours per day, conservative	per working day	patients	billing organizations	codes	paid
Oct 2019	More hours than a day holds at a conservative unit price	6.6	37.5	25.0	33.7	93	1	90792 99232 99233 99239	$42K

National provider registry

From the CMS NPPES Registry, refreshed daily.

Name	OBIORA EDWARD ONWUAMEZE, MD, MS, PhD
Type	Individual
Status	Active
NPI issued	June 30, 2008, last updated December 10, 2020
Practice location	901 W JEFFERSON ST, Springfield, IL 62702-4833, 217-545-8229
Mailing address	PO BOX 19642, Springfield, IL 62794-9642
Specialties	Psychiatry & Neurology, Psychiatry (2084P0800X, primary, license 036-130454 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	$319K	41%	$202	$96 (top 5% from $249)	90th percentile
99232	Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	$172K	22%	$201	$67 (top 5% from $174)	97th percentile
99239	Hospital discharge day management, more than 30 minutes	$109K	14%	$106	$49 (top 5% from $101)	96th percentile
90792	Psychiatric diagnostic evaluation with medical services	$108K	14%	$342	$112 (top 5% from $313)	96th percentile
99222	Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	$44K	6%	$76	$63 (top 5% from $137)	64th percentile
99214	Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	$12K	2%	$142	$60 (top 5% from $133)	96th percentile
90791	Psychiatric diagnostic evaluation	$11K	1%	$395	$105 (top 5% from $228)	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
99233	Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	360	77	$32K	$338	$114	3.0x	2.6x (90th percentile 4.7x)
99232	Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	205	47	$13K	$226	$76	3.0x	2.6x (90th percentile 4.3x)
90870	Therapy using electrical currents	149	16	$12K	$495	$103	4.8x	4.1x (90th percentile 7.0x)
99214	Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	54	28	$4K	$360	$119	3.0x	2.3x (90th percentile 3.8x)
99222	Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	44	43	$4K	$370	$127	2.9x	2.7x (90th percentile 4.4x)
99239	Hospital discharge day management, more than 30 minutes	45	44	$4K	$324	$110	2.9x	2.8x (90th percentile 5.6x)
99285	Emergency department visit with high level of medical decision making	15	14	$2K	$595	$177	3.4x	6.9x (90th percentile 11.7x)
99238	Hospital discharge day management, 30 minutes or less	18	17	$1K	$226	$79	2.8x	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 $1.1M 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.
5	ANN JACOB Springfield, IL, ranked 10113	$978K	Medicaid dollars per patient on code 99233 ($271 per patient-month) sit in the top 5% of every provider billing that code.
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

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