NPPES file of Aug 9, 2026

Raanan Alter, MD

Gynecologic Oncology Physician · Warrenville, IL

Raanan Alter, MD is a gynecologic oncology physician with a practice address in Warrenville, Illinois, and NPI 1558789826, issued on Apr 2, 2014. Check the license (Illinois 036145683, 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 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1558789826
Name
Raanan Alter
Credential
MD
Primary taxonomy
Gynecologic Oncology Physician 207VX0201X
License number
036145683 IL
Self-reported in NPPES; status is on the state search
Practice location
4405 Weaver Pkwy, Warrenville, IL 60555
Phone
(630) 352-5450
Enumerated
Apr 2, 2014
Record last updated
Aug 2, 2024
Fax
(630) 933-4959
Medicare enrollment
Enrolled (PECOS I20190314002216); accepts Medicare assignment
Medical or professional school
Northwestern University Feinberg Medical School, 2014
Telehealth
Offers telehealth (CMS)
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 4405 Weaver Pkwy

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

  1. John Abad, M.D.Surgical Oncology Physician1578722336
  2. John Ayers, MDHematology & Oncology Physician1477540821
  3. Madeline BiceNurse Practitioner1982189221
  4. Mackenzie Blackburn, APRN, CNPNurse Practitioner1740005511
  5. Robin Buerki, MDNeurology Physician1881936326
  6. Tonia Cabai, NP-CNurse Practitioner1245684018

Verify Raanan Alter 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 036145683
    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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86% fewer Medicare Part D claims than the average gynecologic oncology physician in 2024

28 Medicare Part D claims for 14 beneficiaries, against an average of 195 among the 1,475 providers of this specialty who prescribed in Part D.

  1. Raanan Alter28
  2. Specialty average195

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.

The MIPS final score for 2023 (Medicare payment program): 94.1 of 100

The Merit-based Incentive Payment System score is reported for this clinician. 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 score82.6
  2. Costnot scored (reweighted)
  3. Promoting interoperabilityout of 100 · 25%100.0
  4. Improvement activities40 of 40 points · 15%100.0

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

Industry payments in 2024: $49,102.27

62 payments; by number, the most common kind was food and beverage; the largest payer was Intuitive Surgical, Inc. The 1,199 providers of this specialty with any payment received $6,387.20 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Raanan Alter$49,102
  2. Specialty average$6,387

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through 3 group practices

  1. Central Dupage Physician GroupWarrenville, IL
  2. Northwestern Medical Faculty FoundationWarrenville, IL
  3. West Coast Wound And Skin Care IncWarrenville, IL

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

Raanan Alter among 76 gynecologic oncology physician records in Illinois

Raanan Alter, MD is one of 76 gynecologic oncology physician records with a practice address in Illinois. 82% 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 76% of them.

  • NPI issued2014 · 76% of these records are older, 20% newer
  • In a Medicare fileYes · 82% of these records are
  • In the CMS Doctors and Clinicians fileYes · 68% of these records are
  • Graduated2014 · median 2008 among the 52 with a school on file
  • Record last updated2024 · 50% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207VX0201X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Gynecologic Oncology Physician providers in Illinois

There are 76 gynecologic oncology physician records in Illinois.

The 8 gynecologic oncology physician records with the nearest ZIP codes

  1. Kianoosh Jafari, M.D.Oak Brook, IL 605231902918048
  2. Sudarshan Sharma, MDHinsdale, IL 605211740265974
  3. Suzanne Bergen, MDAurora, IL 605041336287093
  4. Alexander Cohen, M.D.Chicago, IL 606071437682143
  5. Amina Ahmed, MDChicago, IL 606111154372068
  6. Amy Alexander, M.D.Chicago, IL 606111831432087
  7. Emma BarberChicago, IL 606111346551561
  8. Allison Grubbs, MDChicago, IL 606111962866913

Common questions

What is Raanan Alter, MD's NPI number?

Raanan Alter, MD's National Provider Identifier (NPI) is 1558789826, issued on Apr 2, 2014. An NPI identifies a provider in billing; it is not a license.

Where is Raanan Alter, MD located?

The NPPES record lists a practice address at 4405 Weaver Pkwy, Warrenville, IL, 60555. Phone: (630) 352-5450. Providers update this record themselves, so call before visiting.

How can I verify Raanan Alter, MD's license?

NPPES lists Illinois license number 036145683, 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 Raanan Alter, MD prescribe under Medicare Part D?

In 2024, Raanan Alter, MD had 28 Medicare Part D claims for 14 beneficiaries; the average among gynecologic oncology physician prescribers was 195. Part D covers Medicare prescriptions only.

What is Raanan Alter, MD's MIPS final score?

The 2023 MIPS final score is 94.1 of 100. 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.