Andrey Leonov, M.D.
Allergy & Immunology Physician · Joliet, IL
Andrey Leonov, M.D. is an allergy & immunology physician with a practice address in Joliet, Illinois, and NPI 1043310261, issued on Sep 25, 2006. Check the license (Illinois 036-125826, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Andrey Leonov
- Credential
- M.D.
- Primary taxonomy
- Allergy & Immunology Physician 207K00000X
- License numbers
- 036-125826 IL
4301107932 MI
25MA08039700 NJ
248493 NY
35089736 OH
Self-reported in NPPES; status is on the state search - Practice location
- 2100 Glenwood Ave, Joliet, IL 60435
- Phone
- (815) 514-2712
- Enumerated
- Sep 25, 2006
- Record last updated
- Aug 10, 2023
- Medicaid ID
- 2745373 OH
- Medicare enrollment
- Enrolled (PECOS I20101103001240); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest allergy & immunology physician records → All 162 in Illinois → Look up another NPI →
Also registered at 2100 Glenwood Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Matheena Akhtar, M.D.Pediatrics Physician1447296991
- Sherri Albert, APNNurse Practitioner1013382209
- Irfan Alhayani, MDHospitalist Physician1316036692
- Grace Anderson, PT, DPTPhysical Therapist1447064134
- Jose Becerra, PTPhysical Therapist1629248703
- Alyssa Brown, MSOTR/LOccupational Therapist1487189551
Verify Andrey Leonov 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 036-125826Check 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 allergy & immunology physician in 2024
455 Medicare Part D claims for 112 beneficiaries, against an average of 741 among the 2,899 providers of this specialty who prescribed in Part D. Brand-name drugs were 42% of claims.
Most prescribed
- Montelukast Sodium49 claims
- Breo Ellipta39 claims
- Hizentra36 claims
- Prednisone30 claims
- Albuterol Sulfate Hfa26 claims
- Azelastine Hcl26 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: $159.73
8 payments; by number, the most common kind was food and beverage; the largest payer was GlaxoSmithKline, LLC. The 2,496 providers of this specialty with any payment received $8,321.81 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.
Bills Medicare through one group practice
- Dupage Medical Group LtdJoliet, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Andrey Leonov among 162 allergy & immunology physician records in Illinois
Andrey Leonov, M.D. is one of 162 allergy & immunology physician records with a practice address in Illinois. 86% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 14% of them.
- NPI issued2006 · 14% of these records are older, 48% newer
- In a Medicare fileYes · 86% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated2003 · median 2001 among the 114 with a school on file
- Record last updated2023 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207K00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Allergy & Immunology Physician providers in Illinois
There are 162 allergy & immunology physician records in Illinois.
All 162 in Illinois → Every provider in Joliet → Allergy & Immunology Physician nationwide →
The 8 allergy & immunology physician records with the nearest ZIP codes
- Ming-Te Lin, MDFlossmoor, IL 604221306915012
- Jenna Podjasek, MDOak Forest, IL 604521831355346
- Nirmala Ray, M.D.Oak Forest, IL 604521770671893
- Susan Apolinario, M.D.Oak Lawn, IL 604531174522171
- Hetal Amin, MDChannahon, IL 604101184665424
- Uma Gavani, MDPalos Heights, IL 604631710961214
- Diosdado Lim, M.D.Palos Heights, IL 604631386919538
- Malina Bhalla, MDOrland Park, IL 604671679196737
Common questions
What is Andrey Leonov, M.D.'s NPI number?
Andrey Leonov, M.D.'s National Provider Identifier (NPI) is 1043310261, issued on Sep 25, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Andrey Leonov, M.D. located?
The NPPES record lists a practice address at 2100 Glenwood Ave, Joliet, IL, 60435. Phone: (815) 514-2712. Providers update this record themselves, so call before visiting.
How can I verify Andrey Leonov, M.D.'s license?
NPPES lists Illinois license number 036-125826, 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 Andrey Leonov, M.D. prescribe under Medicare Part D?
In 2024, Andrey Leonov, M.D. had 455 Medicare Part D claims for 112 beneficiaries; the average among allergy & immunology physician prescribers was 741. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 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.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.