John Allegretti, MD
Emergency Medicine Physician · Park Ridge, IL
John Allegretti, MD is an emergency medicine physician with a practice address in Park Ridge, Illinois, and NPI 1265501621, issued on Nov 7, 2006. Check the license (Illinois 036104540, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- John Allegretti
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 036104540 IL
Self-reported in NPPES; status is on the state search - Practice location
- 1775 Dempster, Park Ridge, IL 60068
- Phone
- (847) 723-7624
- Enumerated
- Nov 7, 2006
- Entity
- Type 1 · individual
Also registered at 1775 Dempster
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Rene Adrian, M.D.Emergency Medicine Physician1104905652
- Susan BallisEmergency Medicine Physician1073682183
- Ronald BarrecaEmergency Medicine Physician1922177963
- David HassardEmergency Medicine Physician1619046554
- Jon OlsenEmergency Medicine Physician1083783930
- Constance Ryjewski, APN-CNSMedical-Surgical Clinical Nurse Specialist1861613507
Verify John Allegretti 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 036104540Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
68% fewer Medicare Part D claims than the average emergency medicine physician in 2024
112 Medicare Part D claims for 85 beneficiaries, against an average of 355 among the 49,029 providers of this specialty who prescribed in Part D. 18 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen17 claims
- Cephalexin11 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.
42 emergency medicine physician records list a Park Ridge practice address
They are 42 of the 2,577 NPPES records with a Park Ridge practice address, and 3,096 emergency medicine physician records in Illinois.
All 42 in Park Ridge → All 3,096 in Illinois → Every provider in Park Ridge →
Other emergency medicine physician records in Illinois
- Osama Aaflaq, M.D.Carbondale, IL1083663520
- Suresh Abad, M.D.Vernon Hills, IL1639100126
- Albert Abalos, M.D.Elmhurst, IL1881983484
- Habib Abbasi, M.D.Joliet, IL1902832835
- Andrew Abbeg, D.O.Greenville, IL1548490311
- Ryan Abbott, DOChicago, IL1477243517
- Zakaria Abdulnabi, M.D.Urbana, IL1790135499
- Logan Abel, MDChicago, IL1447900592
- Claire Abramoff, MDChicago, IL1316380009
- Rachel Abrams, M.D.Chicago, IL1659786317
Common questions
What is John Allegretti, MD's NPI number?
John Allegretti, MD's National Provider Identifier (NPI) is 1265501621, issued on Nov 7, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Allegretti, MD located?
The NPPES record lists a practice address at 1775 Dempster, Park Ridge, IL, 60068. Phone: (847) 723-7624. Providers update this record themselves, so call before visiting.
How can I verify John Allegretti, MD's license?
NPPES lists Illinois license number 036104540, 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 John Allegretti, MD prescribe under Medicare Part D?
In 2024, John Allegretti, MD had 112 Medicare Part D claims for 85 beneficiaries; the average among emergency medicine physician prescribers was 355. 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.