TAMMY DOBBIN, ACGNP

NPI 1346902830, individual, Chicago, IL, Nurse Practitioner, Gerontology

Evidence tier

documented action, then payment

Listed on the Medicare revocation list since November 9, 2021.
Medicaid still paid claims in 13 later months, $126,624 in total.

score 95 of 100, rank 134, $127K at stake

Public list actions

Medicare revocation effective November 9, 2021, barred from re-enrolling until January 3, 2033

424.535(a)(4) false or misleading information and 424.535(a)(3) felonies, Practitioner - Nurse Practitioner, IL

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
Medicare revocation list 424.535(a)(4) false or misleading information and 424.535(a)(3) felonies	Exact NPI, name verified	Nov 9, 2021	Jan 3, 2033	13	Mar 2022	Mar 2023	$127K	$0

National provider registry

From the CMS NPPES Registry, refreshed daily.

Name	TAMMY DOBBIN, ACGNP
Type	Individual, sole proprietor
Status	Active
NPI issued	October 12, 2021, last updated September 6, 2022
Practice location	45 W 111TH ST, Chicago, IL 60628-4200, 773-995-3000
Mailing address	7220 W 83RD ST, Bridgeview, IL 60455-1981
Specialties	Nurse Practitioner, Gerontology (363LG0600X, primary, license 209.024375 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
99232	Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	$58K	46%	$88	$67 (top 5% from $174)	69th percentile
99222	Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	$42K	33%	$87	$63 (top 5% from $137)	74th percentile
99231	Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes	$16K	13%	$52	$37 (top 5% from $103)	70th percentile
99238	Hospital discharge day management, 30 minutes or less	$5K	4%	$42	$48 (top 5% from $80)	41st percentile
99221	Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes	$2K	2%	$65	$50 (top 5% from $194)	too few months to rank
99308	Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more	$2K	2%	$32	$14 (top 5% from $58)	too few months to rank
99309	Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes	$1K	1%	$38	$21 (top 5% from $84)	too few months to rank

In this area

226 providers in Cook County, IL carry an indicator in the public record, with $140.7M at stake between them. The most common is part of a provider network, on 112 of them, followed by more hours than a day holds on 92. 16 are tier 1: documented action, then payment.

tier	provider	at stake	why
1	FA 1ST SOLUTIONS Chicago, IL, ranked 21	$43K	Listed on the Medicare revocation list since March 1, 2024. Medicaid still paid claims in 7 later months, $42,753 in total. and 1 more
1	HISHAM SADEK Chicago, IL, ranked 51	$2.0M	Listed on the IN Medicaid exclusion list since July 15, 2015. Medicaid still paid claims in 54 later months, $2,029,469 in total.
1	RAPID HEALTHCARE LABORATORY LLC Elgin, IL, ranked 94	$369K	Listed on the Medicare revocation list since June 4, 2024. Medicaid still paid claims in 1 later month, $368,928 in total.
1	GORDON DENTAL ASSOCIATES, LTD. Olympia Fields, IL, ranked 98	$323K	Listed on the KY Medicaid exclusion list since February 17, 2021. Medicaid still paid claims in 35 later months, $323,243 in total.
1	KENNETH PELEHAC Oak Lawn, IL, ranked 294	$9K	Listed on the Medicare revocation list since May 13, 2022. Medicaid still paid claims in 1 later month, $8,894 in total.
1	MASTURA ZALWANGO Skokie, IL, ranked 302	$8K	Listed on the Medicare revocation list since September 3, 2022. Medicaid still paid claims in 5 later months, $7,805 in total.
1	WESTERN LABS COMPANY Chicago, IL, ranked 311	$6K	Listed on the Medicare revocation list since February 23, 2023. Medicaid still paid claims in 3 later months, $6,276 in total.
1	SABA OSMANI LA Grange Highlands, IL, ranked 331	$4K	Listed on the Medicare revocation list since October 2, 2020. Medicaid still paid claims in 5 later months, $4,116 in total.

All 226 in IL

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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