ADAM J MAASS, MD

NPI 1841258738, individual, Springdale, AR, Internal Medicine, Endocrinology, Diabetes & Metabolism

Evidence tier

documented action, then payment

Listed on the MO Medicaid exclusion list since August 13, 2021.
Medicaid still paid claims in 5 later months, $7,326 in total.

score 94 of 100, rank 305, $7K at stake

Public list actions

Medicare revocation effective October 20, 2025, barred from re-enrolling until March 13, 2036

424.535(a)(2) provider or supplier conduct (exclusion) and 424.535(a)(22) patient harm, Practitioner - Internal Medicine, IN

Medicare revocation effective October 20, 2025, barred from re-enrolling until March 12, 2036

424.535(a)(9) failure to report and 424.535(a)(2) provider or supplier conduct (exclusion) and 424.535(a)(22) patient harm, Practitioner - Endocrinology, AR

OIG exclusion October 20, 2025 under section 1128a2

Physician (MD, DO), Endocrinology, Bentonville, AR

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
MO Medicaid exclusion list state list extracted from https://mmac.mo.gov/wp-content/uploads/sanction-list-2026-08-31.xlsx (pandas claude colmap)	Exact NPI, name verified	Aug 13, 2021	still open	5	Jan 2022	May 2022	$7K	$12K

National provider registry

From the CMS NPPES Registry, refreshed daily.

Name	ADAM J MAASS, MD
Type	Individual
Status	Active
NPI issued	May 2, 2006, last updated September 16, 2020
Practice location	4301 GREATHOUSE SPRINGS RD, STE 100, Springdale, AR 72762, 479-757-1730
Mailing address	3333 PINNACLE HILLS PKWY STE 300-B, Rogers, AR 72758-9100
Specialties	Internal Medicine, Endocrinology, Diabetes & Metabolism (207RE0101X, primary, license e2582 AR)

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
99214	Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	$51K	73%	$59	$60 (top 5% from $133)	49th percentile
99213	Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more	$11K	16%	$32	$44 (top 5% from $110)	30th percentile
83036	Hemoglobin a1c level	$6K	8%	$9.39	$5.87 (top 5% from $14)	82nd percentile
99212	Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	$918	1%	$22	$28 (top 5% from $147)	too few months to rank
84443	Blood test, thyroid stimulating hormone (tsh)	$787	1%	$13	$11 (top 5% from $28)	too few months to rank
80053	Blood test, comprehensive group of blood chemicals	$242	0%	$9.29	$8.38 (top 5% from $44)	too few months to rank
95251	Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report	$20	0%	$0.49	$20 (top 5% from $42)	too few months to rank
36415	Insertion of needle into vein for collection of blood sample	$4	0%	$0.07	$1.97 (top 5% from $12)	too few months to rank

In this area

3 providers in Washington County, AR carry an indicator in the public record, with $1.2M at stake between them. The most common is more hours than a day holds, on 2 of them, followed by paid after a public list action on 1. 1 is tier 1: documented action, then payment.

tier	provider	at stake	why
1	HANNAH HARRIS Fayetteville, AR, ranked 307	$7K	Listed on the Medicare revocation list since November 8, 2021. Medicaid still paid claims in 2 later months, $6,844 in total.
4	SEAN KALEY Fayetteville, AR, ranked 8047	$167K	Hours beyond a day in 3 months, but with up to 219 patients a month, which points to a supervising clinician on the claims rather than one person's hours. Records needed. and 1 more
4	VASHONDA EASON Springdale, AR, ranked 8183	$1.0M	Hours beyond a day in 8 months, but with up to 467 patients a month, which points to a supervising clinician on the claims rather than one person's hours. Records needed. and 1 more

Recent enforcement in AR

All releases

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

DOJIndictedNov 19, 2025

Little Rock Psychologist Indicted by Federal Grand Jury for Defrauding Medicare and Arkansas Blue Cross Blue Shield

Banks billed Medicare and Arkansas Blue Cross and Blue Shield for thousands of hours of psychotherapy services that never took place, including sessions for patients seen only once and patients who had died, and created fictitious records to conceal the billing.

DOJSentencedJan 26, 2024

Former Rogers Company Owner and Former CEO Sentenced in Workers’ Comp Fraud/Kickback Conspiracy

The former owner and former CEO of a Rogers-based medical supply and billing company recruited physicians to dispense pain creams and patches to workers' compensation patients in exchange for a split of profits, billed the federal Office of Workers' Compensation Programs and private insurers at markups of 15 to 20 times cost, paid the physicians kickbacks, and shipped medications to two Louisiana physicians who lacked required dispensing licenses.

Referral packet

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