NPPES file of Aug 9, 2026

Esmond K. Yen, MD

Obstetrics & Gynecology Physician · Woodridge, IL

Esmond K. Yen, MD is an obstetrics & gynecology physician with a practice address in Woodridge, Illinois, and NPI 1285698100, issued on Apr 17, 2006. Check the license (Illinois 036094713, 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
1285698100
Name
Esmond K. Yen
Credential
MD
Primary taxonomy
Obstetrics & Gynecology Physician 207V00000X
License number
036094713 IL
Self-reported in NPPES; status is on the state search
Practice location
7425 Janes Ave, Woodridge, IL 60517
Phone
(815) 300-7764
Enumerated
Apr 17, 2006
Record last updated
Oct 28, 2020 (not updated in 6 years: call before relying on the address or phone)
Medicaid ID
036094713 IL
Medicare enrollment
Enrolled (PECOS I20100610000788); accepts Medicare assignment
Medical or professional school
University Of Illinois College Of Med (Chi/Peor/Rock/Chm-Urb), 1993
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 7425 Janes Ave

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

  1. Refat Baridi, MDHematology & Oncology Physician1285622621
  2. Sara Chabra, PA-CPhysician Assistant1255706248
  3. Muhammad Choudhry, M.D.Psychiatry Physician1841356540
  4. Nabeela Choudry, MSProfessional Counselor1679753727
  5. Liyun Huang, FNPHematology & Oncology Physician1730634700
  6. Sylvia Irizarry, MDPediatrics Physician1144284332

Verify Esmond K. Yen 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 036094713
    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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84% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024

27 Medicare Part D claims for 17 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.

  1. Esmond Yen27
  2. Specialty average165

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: $102.10

5 payments; by number, the most common kind was food and beverage; the largest payer was Astellas Pharma US Inc. The 21,429 providers of this specialty with any payment received $1,030.61 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Esmond Yen$102.10
  2. Specialty average$1,030.61

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. Premier Suburban Medical Group, PLLCNew Lenox, IL

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

Esmond K. Yen among 2,062 obstetrics & gynecology physician records in Illinois

Esmond K. Yen, MD is one of 2,062 obstetrics & gynecology physician records with a practice address in Illinois. 72% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 12% of them.

  • NPI issued2006 · 12% of these records are older, 54% newer
  • In a Medicare fileYes · 72% of these records are
  • In the CMS Doctors and Clinicians fileYes · 57% of these records are
  • Graduated1993 · median 2006 among the 1,168 with a school on file
  • Record last updated2020 · 51% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Obstetrics & Gynecology Physician providers in Illinois

There are 2,062 obstetrics & gynecology physician records in Illinois.

The 8 obstetrics & gynecology physician records with the nearest ZIP codes

  1. George Banuelos, M.D.Woodridge, IL 605171396815601
  2. Esha Kasmani, MDWoodridge, IL 605171013646033
  3. Xiao Huang, MDDowners Grove, IL 605161992202006
  4. Nazneen Shaikh, DODowners Grove, IL 605161770073934
  5. Gayle Simmons, MDDowners Grove, IL 605161154482024
  6. Sydney Walker, DODowners Grove, IL 605161861985608
  7. Lyba Zia, MDDowners Grove, IL 605161861070914
  8. Jennifer Balash, M.D.Downers Grove, IL 605151487881025

Common questions

What is Esmond K. Yen, MD's NPI number?

Esmond K. Yen, MD's National Provider Identifier (NPI) is 1285698100, issued on Apr 17, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Esmond K. Yen, MD located?

The NPPES record lists a practice address at 7425 Janes Ave, Woodridge, IL, 60517. Phone: (815) 300-7764. Providers update this record themselves, so call before visiting.

How can I verify Esmond K. Yen, MD's license?

NPPES lists Illinois license number 036094713, 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 Esmond K. Yen, MD prescribe under Medicare Part D?

In 2024, Esmond K. Yen, MD had 27 Medicare Part D claims for 17 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. 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.

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.