Jonathan Warren, MD
Sleep Medicine (Internal Medicine) Physician · Joliet, IL
Jonathan Warren, MD is a sleep medicine (internal medicine) physician with a practice address in Joliet, Illinois, and NPI 1871519124, issued on Jul 13, 2006. Check the license (Illinois 036104101, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Jonathan Warren
- Credential
- MD
- Primary taxonomy
- Sleep Medicine (Internal Medicine) Physician 207RS0012X
- License numbers
- 036104101 IL
036-104101 IL
Self-reported in NPPES; status is on the state search - Practice location
- 2201 Glenwood Ave, Joliet, IL 60435
- Phone
- (815) 773-9090
- Enumerated
- Jul 13, 2006
- Record last updated
- Mar 3, 2026
- Fax
- (855) 705-5544
- Medicaid ID
- 036104101 IL
- Medicare enrollment
- Enrolled (PECOS I20040914000123); accepts Medicare assignment
- Medical or professional school
- University Of Chicago, Pritzker School Of Medicine, 1981
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest sleep medicine (internal medicine) physician records → All 43 in Illinois → Look up another NPI →
Also registered at 2201 Glenwood Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Jonathan Warren 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 036104101Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
45% fewer Medicare Part D claims than the average sleep medicine (internal medicine) physician in 2024
322 Medicare Part D claims for 63 beneficiaries, against an average of 585 among the 852 providers of this specialty who prescribed in Part D. 31 claims were for opioids.
Most prescribed
- Gabapentin54 claims
- Lorazepam54 claims
- Trazodone Hcl44 claims
- Mirtazapine33 claims
- Tramadol Hcl31 claims
- Duloxetine Hcl22 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: $248.06
10 payments; by number, the most common kind was food and beverage; the largest payer was Jazz Pharmaceuticals Inc. The 664 providers of this specialty with any payment received $3,724.37 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.
Jonathan Warren among 43 sleep medicine (internal medicine) physician records in Illinois
Jonathan Warren, MD is one of 43 sleep medicine (internal medicine) physician records with a practice address in Illinois. 91% 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 5% of them.
- NPI issued2006 · 5% of these records are older, 72% newer
- In a Medicare fileYes · 91% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated1981 · median 2012 among the 30 with a school on file
- Record last updated2026 · 35% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RS0012X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Sleep Medicine (Internal Medicine) Physician providers in Illinois
There are 43 sleep medicine (internal medicine) physician records in Illinois.
All 43 in Illinois → Every provider in Joliet → Sleep Medicine (Internal Medicine) Physician nationwide →
The 8 sleep medicine (internal medicine) physician records with the nearest ZIP codes
- Philip Leung, M.D.Joliet, IL 604351881686715
- Syed Sayeeduddin, M.D.Joliet, IL 604351467717561
- Robert Aronson, M.D.Olympia Fields, IL 604611598824039
- Richard CzumaPalos Heights, IL 604631295232064
- Helen Martin, M.M.Orland Park, IL 604671750338216
- Wojciech Ornowski, MDSouth Holland, IL 604731801887369
- Alan Li, MDDowners Grove, IL 605151902474604
- Izayadeth Jennings, M.D.Lisle, IL 605321205285996
Common questions
What is Jonathan Warren, MD's NPI number?
Jonathan Warren, MD's National Provider Identifier (NPI) is 1871519124, issued on Jul 13, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Jonathan Warren, MD located?
The NPPES record lists a practice address at 2201 Glenwood Ave, Joliet, IL, 60435. Phone: (815) 773-9090. Providers update this record themselves, so call before visiting.
How can I verify Jonathan Warren, MD's license?
NPPES lists Illinois license number 036104101, 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 Jonathan Warren, MD prescribe under Medicare Part D?
In 2024, Jonathan Warren, MD had 322 Medicare Part D claims for 63 beneficiaries; the average among sleep medicine (internal medicine) physician prescribers was 585. 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.