NPPES file of Aug 9, 2026

Alexander D. Delos Reyes, M.D.

Anesthesiology Physician · Berwyn, IL

Alexander D. Delos Reyes, M.D. is an anesthesiology physician with a practice address in Berwyn, Illinois, and NPI 1841449394, issued on Sep 9, 2008. Check the license (Illinois 036.126771, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1841449394
Name
Alexander D. Delos Reyes
Credential
M.D.
Primary taxonomy
Anesthesiology Physician 207L00000X
License numbers
036.126771 IL
036126771 IL
125.053244 IL
Self-reported in NPPES; status is on the state search
Practice location
3249 South Oak Park Avenue, Berwyn, IL 60402
Phone
(708) 783-9100
Enumerated
Sep 9, 2008
Record last updated
Aug 29, 2016 (not updated in 10 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20191119001418); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 3249 South Oak Park Avenue

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Kimberly Weber, CRNACertified Registered Nurse Anesthetist1952792301

Verify Alexander D. Delos Reyes in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
    Search for license 036.126771
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Illinois license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. North American Partners IN Anesthesia OF New Jersey LLCPaterson, NJ

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Alexander D. Delos Reyes among 2,575 anesthesiology physician records in Illinois

Alexander D. Delos Reyes, M.D. is one of 2,575 anesthesiology physician records with a practice address in Illinois. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 47% of them.

  • NPI issued2008 · 47% of these records are older, 47% newer
  • In a Medicare fileYes · 71% of these records are
  • In the CMS Doctors and Clinicians fileYes · 62% of these records are
  • Graduated2007 · median 2006 among the 1,608 with a school on file
  • Record last updated2016 · 48% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207L00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

21 anesthesiology physician records list a practice address in Berwyn

They are 21 of the 1,031 NPPES records with a practice address in Berwyn, and 2,575 anesthesiology physician records in Illinois.

The 8 anesthesiology physician records with the nearest ZIP codes

  1. Ossama Abdellatif, MDBerwyn, IL 604021760436786
  2. Joseph Alioto, M.D.Berwyn, IL 604021164685525
  3. Mauree Beard, M.D.Berwyn, IL 604021073831590
  4. Marta Herda, MDBerwyn, IL 604021376642397
  5. Thomas Neff, MDBerwyn, IL 604021679504898
  6. Randall Ostroff, MDBerwyn, IL 604021366523219
  7. Bharti Raizada, M.D,Berwyn, IL 604021033426705
  8. Francisco Rodriguez, MDBerwyn, IL 604021578594479

Common questions

What is Alexander D. Delos Reyes, M.D.'s NPI number?

Alexander D. Delos Reyes, M.D.'s National Provider Identifier (NPI) is 1841449394, issued on Sep 9, 2008. An NPI identifies a provider in billing; it is not a license.

Where is Alexander D. Delos Reyes, M.D. located?

The NPPES record lists a practice address at 3249 South Oak Park Avenue, Berwyn, IL, 60402. Phone: (708) 783-9100. Providers update this record themselves, so call before visiting.

How can I verify Alexander D. Delos Reyes, M.D.'s license?

NPPES lists Illinois license number 036.126771, 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.

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.