Steven Antonini, MD
Pediatrics Physician · Mokena, IL
Steven Antonini, MD is a pediatrics physician with a practice address in Mokena, Illinois, and NPI 1114004652, issued on Nov 1, 2006. Check the license (Illinois 036076951, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Steven Antonini
- Credential
- MD
- Primary taxonomy
- Pediatrics Physician 208000000X
- License numbers
- 036076951 IL
036-076951 IL
Self-reported in NPPES; status is on the state search - Practice location
- 21205 Owens RD Ste 3, Mokena, IL 60448
- Phone
- (815) 469-2123
- Enumerated
- Nov 1, 2006
- Entity
- Type 1 · individual
Also registered at 21205 Owens RD Ste 3
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Michael Demaertelaere, DOFamily Medicine Physician1982779237
- Aileen Donausky, MDPediatrics Physician1356416143
- Orest Horodysky, MDInternal Medicine Physician1689749475
- Jennifer Johnson, NP-CFamily Nurse Practitioner1346792397
- Julie Limon, MDFamily Medicine Physician1770635989
- Theresa Sawyer, FNP-BCNurse Practitioner1376178889
Verify Steven Antonini in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 036076951Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
39% fewer Medicare Part D claims than the average pediatrics physician in 2024
496 Medicare Part D claims for 52 beneficiaries, against an average of 818 among the 8,211 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims.
Most prescribed
- Atorvastatin Calcium75 claims
- Hydrochlorothiazide42 claims
- Levothyroxine Sodium38 claims
- Amoxicillin25 claims
- Lisinopril21 claims
- Rosuvastatin Calcium18 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $24.65
1 payment, mostly food and beverage; the largest payer was Merck Sharp & Dohme LLC. The 23,406 providers of this specialty with any payment received $1,203.67 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
One hospital or facility affiliation
- Health Service Systems, IncNew Lenox, IL
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Pediatrics Physician providers in Illinois
There are 3,316 pediatrics physician records in Illinois.
Other pediatrics physician records in Illinois
- Waleed Abbasi, M.D.Rockford, IL1487941969
- Aiah Abdel-AalChicago, IL1255115846
- Mahmoud Abdel-Ghani, MDSpringfield, IL1487495883
- Eman Abdel-Latief, M.D.Evanston, IL1508229949
- Raid Abdulla, MDChicago, IL1710037742
- Zainab Abdullah, M.D.Chicago, IL1356579650
- Sneha Abichandani, M.DChicago, IL1346505286
- Lynn Ables, MDWheaton, IL1285795989
- Alin Abraham, M.D.Lisle, IL1316101181
- Emil Abraham, MDSpringfield, IL1396419768
Common questions
What is Steven Antonini, MD's NPI number?
Steven Antonini, MD's National Provider Identifier (NPI) is 1114004652, issued on Nov 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Steven Antonini, MD located?
The NPPES record lists a practice address at 21205 Owens RD Ste 3, Mokena, IL, 60448. Phone: (815) 469-2123. Providers update this record themselves, so call before visiting.
How can I verify Steven Antonini, MD's license?
NPPES lists Illinois license number 036076951, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Steven Antonini, MD prescribe under Medicare Part D?
In 2024, Steven Antonini, MD had 496 Medicare Part D claims for 52 beneficiaries; the average among pediatrics physician prescribers was 818. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.