Mobile Doctors CEO Dike Ajiri and Physician Banio Koroma Convicted in Medicare House-Call Fraud

Case from 2013–2016 (U.S. Attorney's Office latest release: Jan. 25, 2016). Published on Scammers.com Oct. 16, 2026; case status is current as of that date.

The chief executive and a physician of Mobile Doctors, a Chicago company that arranged doctors' house calls in several states, were both convicted of federal health care fraud. CEO Dike Ajiri admitted inflating Medicare bills by about $1.85 million, and Dr. Banio Koroma was convicted by a jury of falsely certifying patients as homebound, the U.S. Attorney's Office for the Northern District of Illinois announced [1] [2].

Outcome: Ajiri was sentenced in May 2016 to 15 months in prison, according to Home Health Care News and a later HHS appeals board decision [4] [5]. Koroma was sentenced in December 2016 to 40 months in prison, according to the Chicago Sun-Times [6].

How the scheme worked

Mobile Doctors, at 3319 N. Elston Ave. in Chicago, contracted with physicians to make in-home visits to patients in Illinois, Michigan, Indiana and other states. It closed in 2013 after Ajiri's arrest [2].

1. Upcoding: According to his plea agreement, Ajiri personally altered billing forms, and told staff to do the same, so that many in-home visits were billed to Medicare and the Railroad Retirement Board at the highest level even though the visits were shorter and less complicated [2]. The plea agreement put the loss at about $1,854,000.
2. False homebound certifications: Trial evidence showed Koroma certified patients as confined to their homes when they were not and did not need the skilled-nursing services he ordered. One patient testified she could leave home and visit her primary-care doctor; Koroma's false certifications cost Medicare more than $45,000 for her alone, prosecutors said [1].
3. Scale of the investigation: When the two were arrested in August 2013, prosecutors said claims data showed about 99% of Mobile Doctors' established-patient visits from 2006 to February 2013 were billed at the two highest codes, while employees and patients described typical visits of 10 to 30 minutes [3]. Those figures were allegations in a complaint affidavit; Ajiri's admitted loss is the $1.85 million in his plea.

The people convicted

Dike Ajiri, 44 at plea, Wilmette, Ill. — Mobile Doctors CEO.

• Pleaded guilty Oct. 23, 2015, to one count of health care fraud before U.S. District Judge John J. Tharp Jr. [2].
• Sentenced May 18, 2016, to 15 months in prison, with restitution of about $1.85 million and forfeiture of $300,000, according to an HHS Departmental Appeals Board decision [5]. That decision also upheld his exclusion from federal health care programs.

Dr. Banio Koroma, 66 at trial, Tinley Park, Ill. — Mobile Doctors physician.

• Convicted by a jury on Jan. 25, 2016, of two counts of health care fraud and two counts of making false statements related to health care matters [1].
• Sentenced in December 2016 to 40 months in prison and ordered to pay $1.5 million in restitution, according to the Chicago Sun-Times, citing an FBI spokesman [6].

The case was investigated by the Medicare Fraud Strike Force (FBI and HHS-OIG), with the Railroad Retirement Board OIG participating.

Red flags

• Medicare statements listing long or complex visits when your doctor's house call was brief and routine.
• Home-health services you didn't need or ask for after a physician certified you as homebound.
• Explanation of Benefits entries for tests or visits you don't recognize.

What to do if you're targeted

1. Read your Medicare Summary Notices and compare them with the care you actually received.
2. Report suspected fraud to HHS-OIG at oig.hhs.gov/fraud/report-fraud or 1-800-HHS-TIPS.
3. Never share your Medicare number with anyone offering free services in exchange.

Case status (as of Oct. 16, 2026)

Defendant	Court	Status as of Oct. 16, 2026	Source
Dike Ajiri, Wilmette, Ill.	N.D. Ill. (Judge Tharp)	Pleaded guilty Oct. 23, 2015; sentenced May 18, 2016, to 15 months; restitution about $1.85M	[2], [4], [5]
Dr. Banio Koroma, Tinley Park, Ill.	N.D. Ill. (Judge Tharp)	Convicted at trial Jan. 25, 2016; sentenced December 2016 to 40 months; $1.5M restitution	[1], [6]

Both sentences were imposed in 2016; we have not found a source on either man's current custody status.

Sources

1. U.S. Attorney's Office, Northern District of Illinois, "Federal Jury Convicts Tinley Park Physician in Medicare Fraud Scheme," Jan. 25, 2016. https://www.justice.gov/usao-ndil/pr/federal-jury-convicts-tinley-park-physician-medicare-fraud-scheme
2. U.S. Attorney's Office, Northern District of Illinois, "CEO of Chicago Healthcare Company Pleads Guilty to Fraudulently Billing Medicare in $1.8 Million Scheme," Oct. 23, 2015. https://www.justice.gov/usao-ndil/pr/ceo-chicago-healthcare-company-pleads-guilty-fraudulently-billing-medicare-18-million
3. U.S. Attorney's Office, Northern District of Illinois, "Mobile Doctors' Chicago CEO And Doctor Arrested On Federal Health Care Fraud Charges," Aug. 27, 2013. https://www.justice.gov/usao-ndil/pr/mobile-doctors-chicago-ceo-and-doctor-arrested-federal-health-care-fraud-charges
4. Home Health Care News, "Mobile Doctors CEO Gets 15 Months for $1.8 Million Scheme," May 25, 2016. https://homehealthcarenews.com/2016/05/mobile-doctors-ceo-gets-15-months-for-1-8-million-scheme/
5. HHS Departmental Appeals Board, Decision No. 2821, Dike H. Ajiri, Sept. 26, 2017. https://www.hhs.gov/sites/default/files/board-dab-2821.pdf
6. Chicago Sun-Times, "Tinley Park doctor convicted of Medicare fraud gets 40 months," Dec. 12, 2016. https://chicago.suntimes.com/2016/12/12/18364616/tinley-park-doctor-convicted-of-medicare-fraud-gets-40-months

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