NPPES file of Aug 9, 2026

Bretta K. Warren, M.D.

Anatomic Pathology & Clinical Pathology Physician · Arlington Heights, IL

Bretta K. Warren, M.D. is an anatomic pathology & clinical pathology physician with a practice address in Arlington Heights, Illinois, and NPI 1932101938, issued on Aug 10, 2005. Check the license 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 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1932101938
Name
Bretta K. Warren
Credential
M.D.
Primary taxonomy
Anatomic Pathology & Clinical Pathology Physician 207ZP0102X
Practice location
800 W Central RD, Arlington Heights, IL 60005
Phone
(847) 618-6150
Enumerated
Aug 10, 2005
Record last updated
Jul 13, 2026
Fax
(847) 618-6159
Medicare enrollment
Enrolled (PECOS I20050119000980); accepts Medicare assignment
Medical or professional school
University Of Chicago, Pritzker School Of Medicine, 1996
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 800 W Central RD

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

  1. Fiaz Ahmed, MDAnesthesiology Physician1407924251
  2. Syed Ahmed, MDAnesthesiology Physician1124187257
  3. Catherine Ahn, MDAnesthesiology Physician1245308022
  4. Juli AistarsOncology Clinical Nurse Specialist1861883209
  5. A Akbar, M.D.Anesthesiology Physician1144203282
  6. Ayham Alagha, M.D.Hospitalist Physician1851779151

Verify Bretta K. Warren in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersIllinois Department of Financial and Professional RegulationCheck 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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The practice group's MIPS final score for 2023 (Medicare payment program): 90 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score80.0
  2. Costnot scored (reweighted)
  3. Promoting interoperabilitynot scored (reweighted)
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $16.79

1 payment: food and beverage; the largest payer was Siemens Medical Solutions USA, Inc. The 2,607 providers of this specialty with any payment received $3,565.00 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Bretta Warren$16.79
  2. Specialty average$3,565.00

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. Arlington Ridge Pathology SCArlington Heights, IL

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

Bretta K. Warren among 789 anatomic pathology & clinical pathology physician records in Illinois

Bretta K. Warren, M.D. is one of 789 anatomic pathology & clinical pathology physician records with a practice address in Illinois. 55% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 85% newer
  • In a Medicare fileYes · 55% of these records are
  • In the CMS Doctors and Clinicians fileYes · 50% of these records are
  • Graduated1996 · median 2003 among the 396 with a school on file
  • Record last updated2026 · 59% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207ZP0102X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Anatomic Pathology & Clinical Pathology Physician providers in Illinois

There are 789 anatomic pathology & clinical pathology physician records in Illinois.

The 8 anatomic pathology & clinical pathology physician records with the nearest ZIP codes

  1. Susan Kern, M.D.Arlington Heights, IL 600051801888052
  2. Kishen Manglani, M.D.Arlington Heights, IL 600051013918929
  3. William Porter, M.D.Arlington Heights, IL 600051336382720
  4. Richard Regan, M.D.Arlington Heights, IL 600051578565404
  5. Robert Toelke, MDArlington Heights, IL 600051992327209
  6. Jason Weiss, DOArlington Heights, IL 600051871793109
  7. Jose Gonzalez, M.D.Elk Grove Village, IL 600071568494664
  8. Maria McIntire, M.D.Elk Grove Village, IL 600071356531107

Common questions

What is Bretta K. Warren, M.D.'s NPI number?

Bretta K. Warren, M.D.'s National Provider Identifier (NPI) is 1932101938, issued on Aug 10, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Bretta K. Warren, M.D. located?

The NPPES record lists a practice address at 800 W Central RD, Arlington Heights, IL, 60005. Phone: (847) 618-6150. Providers update this record themselves, so call before visiting.

How can I verify Bretta K. Warren, M.D.'s license?

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.

What is Bretta K. Warren, M.D.'s MIPS final score?

The 2023 MIPS final score is 90 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.

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.