NPPES file of Aug 9, 2026

Ximena Ysabel Chavez, M.D.

Rheumatology Physician · Skokie, IL

Ximena Ysabel Chavez, M.D. is a rheumatology physician with a practice address in Skokie, Illinois, and NPI 1912196502, issued on Oct 18, 2007. Check the license (Illinois 036119412, 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
1912196502
Name
Ximena Ysabel Chavez
Credential
M.D.
Primary taxonomy
Rheumatology Physician 207RR0500X
License number
036119412 IL
Self-reported in NPPES; status is on the state search
Practice location
9700 Kenton Avenue, Skokie, IL 60076
Phone
(847) 677-0215
Enumerated
Oct 18, 2007
Record last updated
Feb 19, 2021 (not updated in 5 years: call before relying on the address or phone)
Fax
(847) 568-1696
Medicare enrollment
Enrolled (PECOS I20110222000834); accepts Medicare assignment
Medical or professional school
Illinois Medical College, 2003
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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Verify Ximena Ysabel Chavez 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 036119412
    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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4% fewer Medicare Part D claims than the average rheumatology physician in 2024

1,906 Medicare Part D claims for 363 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 43 claims were for opioids.

  1. Ximena Chavez1,906
  2. Specialty average1,978

Most prescribed

  1. Hydroxychloroquine Sulfate350 claims
  2. Prednisone281 claims
  3. Methotrexate221 claims
  4. Allopurinol163 claims
  5. Gabapentin88 claims
  6. Duloxetine Hcl79 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.

The MIPS final score for 2023 (Medicare payment program): 93.1 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 score80.8
  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).

Bills Medicare through one group practice

  1. Endeavor Health Medical GroupGlenview, IL

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

Ximena Ysabel Chavez among 340 rheumatology physician records in Illinois

Ximena Ysabel Chavez, M.D. is one of 340 rheumatology physician records with a practice address in Illinois. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 48% of them.

  • NPI issued2007 · 48% of these records are older, 41% newer
  • In a Medicare fileYes · 83% of these records are
  • In the CMS Doctors and Clinicians fileYes · 72% of these records are
  • Graduated2003 · median 2003 among the 244 with a school on file
  • Record last updated2021 · 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 207RR0500X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Rheumatology Physician providers in Illinois

There are 340 rheumatology physician records in Illinois.

The 8 rheumatology physician records with the nearest ZIP codes

  1. Erin Arnold, MDSkokie, IL 600761093767733
  2. William Arnold, MDSkokie, IL 600761457305823
  3. John Berry, D.O.Skokie, IL 600761417319690
  4. Justin Gan, M.D.Skokie, IL 600761851549067
  5. Robert Hozman, M.D.Skokie, IL 600761659308237
  6. Allan Pilloff, M.D.Skokie, IL 600761245278142
  7. Sydney Brandwein, M.D.Park Ridge, IL 600681053357590
  8. Sana JafferyPark Ridge, IL 600681922569201

Common questions

What is Ximena Ysabel Chavez, M.D.'s NPI number?

Ximena Ysabel Chavez, M.D.'s National Provider Identifier (NPI) is 1912196502, issued on Oct 18, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Ximena Ysabel Chavez, M.D. located?

The NPPES record lists a practice address at 9700 Kenton Avenue, Skokie, IL, 60076. Phone: (847) 677-0215. Providers update this record themselves, so call before visiting.

How can I verify Ximena Ysabel Chavez, M.D.'s license?

NPPES lists Illinois license number 036119412, 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 Ximena Ysabel Chavez, M.D. prescribe under Medicare Part D?

In 2024, Ximena Ysabel Chavez, M.D. had 1,906 Medicare Part D claims for 363 beneficiaries; the average among rheumatology physician prescribers was 1,978. Part D covers Medicare prescriptions only.

What is Ximena Ysabel Chavez, M.D.'s MIPS final score?

The 2023 MIPS final score is 93.1 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.