NPPES file of Aug 9, 2026

Michael Warren

Pain Medicine (Anesthesiology) Physician · Chicago, IL

Michael Warren is a pain medicine (anesthesiology) physician with a practice address in Chicago, Illinois, and NPI 1093138075, issued on Jan 28, 2014. Check the license (Illinois 125067754, 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 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1093138075
Name
Michael Warren
Primary taxonomy
Pain Medicine (Anesthesiology) Physician 207LP2900X
License numbers
125067754 IL
MD468986 PA
Self-reported in NPPES; status is on the state search
Practice location
1740 W Taylor St, Chicago, IL 60612
Phone
(866) 600-2273
Enumerated
Jan 28, 2014
Record last updated
Feb 12, 2020 (not updated in 6 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20210325000749); 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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8 nearest pain medicine (anesthesiology) physician records → All 203 in Illinois → Look up another NPI →

Also registered at 1740 W Taylor St

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

  1. Francisco AbancoCertified Registered Nurse Anesthetist1255844288
  2. Leena Abbas, MDStudent in an Organized Health Care Education/Training Program1679376594
  3. Herand AbcarianColon & Rectal Surgery Physician1881792372
  4. Ivy AbrahamHematology & Oncology Physician1497172845
  5. Rohit Abraham, MD, MPH, MATPsychiatry Physician1013478932
  6. Ereni Abuaita, DOInternal Medicine Physician1013710961

Verify Michael Warren 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 125067754    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

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34% fewer Medicare Part D claims than the average pain medicine (anesthesiology) physician in 2024

1,160 Medicare Part D claims for 164 beneficiaries, against an average of 1,750 among the 2,982 providers of this specialty who prescribed in Part D. Brand-name drugs were 3% of claims. 195 claims were for opioids.

  1. Michael Warren1,160
  2. Specialty average1,750

Most prescribed

  1. Gabapentin377 claims
  2. Hydrocodone-Acetaminophen127 claims
  3. Duloxetine Hcl100 claims
  4. Pregabalin100 claims
  5. Tizanidine Hcl84 claims
  6. Baclofen70 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: $23.31

1 payment: food and beverage; the largest payer was Abbvie Inc. The 2,789 providers of this specialty with any payment received $3,225.41 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Michael Warren$23.31
  2. Specialty average$3,225.41

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

  1. Mymichigan Medical Center SaultSault Sainte Marie, MI

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

Michael Warren among 203 pain medicine (anesthesiology) physician records in Illinois

Michael Warren is one of 203 pain medicine (anesthesiology) physician records with a practice address in Illinois. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 80% of them.

  • NPI issued2014 · 80% of these records are older, 18% newer
  • In a Medicare fileYes · 76% of these records are
  • In the CMS Doctors and Clinicians fileYes · 71% of these records are
  • Graduated2013 · median 2002 among the 144 with a school on file
  • Record last updated2020 · 52% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207LP2900X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Pain Medicine (Anesthesiology) Physician providers in Illinois

There are 203 pain medicine (anesthesiology) physician records in Illinois.

All 203 in Illinois → Every provider in Chicago → Pain Medicine (Anesthesiology) Physician nationwide →

The 8 pain medicine (anesthesiology) physician records with the nearest ZIP codes

  1. Rani Chovatiya, M.D.Chicago, IL 606121730323403
  2. Veronica GarciaChicago, IL 606121366474926
  3. Silvio Glusman, MD, PHDChicago, IL 606121396862926
  4. William Landphair, D.O.Chicago, IL 606121467742577
  5. Charles Laurito, MDChicago, IL 606121235244047
  6. Khalid Malik, MDChicago, IL 606121881684231
  7. Abed Rahman, M.D.Chicago, IL 606121629115258
  8. Andrzej Staszkiewicz, MDChicago, IL 606121689866717

Common questions

What is Michael Warren's NPI number?

Michael Warren's National Provider Identifier (NPI) is 1093138075, issued on Jan 28, 2014. An NPI identifies a provider in billing; it is not a license.

Where is Michael Warren located?

The NPPES record lists a practice address at 1740 W Taylor St, Chicago, IL, 60612. Phone: (866) 600-2273. Providers update this record themselves, so call before visiting.

How can I verify Michael Warren's license?

NPPES lists Illinois license number 125067754, 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 Michael Warren prescribe under Medicare Part D?

In 2024, Michael Warren had 1,160 Medicare Part D claims for 164 beneficiaries; the average among pain medicine (anesthesiology) physician prescribers was 1,750. 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.