NPPES file of Aug 9, 2026

Tiffany Y. Wen, M.D.

Family Medicine Physician · Geneva, IL

Tiffany Y. Wen, M.D. is a family medicine physician with a practice address in Geneva, Illinois, and NPI 1407248941, issued on Feb 20, 2015. Check the license (Illinois 036154142, 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
1407248941
Name
Tiffany Y. Wen
Credential
M.D.
Primary taxonomy
Family Medicine Physician 207Q00000X
License numbers
036154142 IL
1407248941 IL
Self-reported in NPPES; status is on the state search
Practice location
2425 Fargo Blvd, Geneva, IL 60134
Phone
(630) 232-2200
Enumerated
Feb 20, 2015
Record last updated
Dec 30, 2021 (not updated in 5 years: call before relying on the address or phone)
Fax
(630) 232-1940
Medicare enrollment
Enrolled (PECOS I20210818002415); accepts Medicare assignment
Medical or professional school
Northwestern University Feinberg Medical School, 2018
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 2425 Fargo Blvd

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

  1. Daniel Armbrust, DOFamily Medicine Physician1548623572
  2. Warren Beeh, M.D.Family Medicine Physician1326048612
  3. Stacey Brown, PAPhysician Assistant1699940999
  4. Melissa Buckley, PT, MSPT, DPTPhysical Therapist1578604757
  5. Peter Cladis, M.D.Family Medicine Physician1467452755
  6. Katherine Fackler-Chapman, M.D.Family Medicine Physician1528068988

Verify Tiffany Y. Wen 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 036154142
    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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8% fewer Medicare Part D claims than the average family medicine physician in 2024

3,275 Medicare Part D claims for 524 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 16 claims were for opioids.

  1. Tiffany Wen3,275
  2. Specialty average3,544

Most prescribed

  1. Atorvastatin Calcium225 claims
  2. Levothyroxine Sodium175 claims
  3. Losartan Potassium110 claims
  4. Rosuvastatin Calcium102 claims
  5. Amlodipine Besylate101 claims
  6. Omeprazole99 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): 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).

Bills Medicare through one group practice

  1. Central Dupage Physician GroupGeneva, IL

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

Tiffany Y. Wen among 6,215 family medicine physician records in Illinois

Tiffany Y. Wen, M.D. is one of 6,215 family medicine physician records with a practice address in Illinois. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 68% of them.

  • NPI issued2015 · 68% of these records are older, 30% newer
  • In a Medicare fileYes · 78% of these records are
  • In the CMS Doctors and Clinicians fileYes · 60% of these records are
  • Graduated2018 · median 2006 among the 3,714 with a school on file
  • Record last updated2021 · 54% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

49 family medicine physician records list a practice address in Geneva

They are 49 of the 1,023 NPPES records with a practice address in Geneva, and 6,215 family medicine physician records in Illinois.

The 8 family medicine physician records with the nearest ZIP codes

  1. Warren Beeh, M.D.Geneva, IL 601341326048612
  2. Natalie Choi, MDGeneva, IL 601341154375582
  3. Peter Cladis, M.D.Geneva, IL 601341467452755
  4. Thomas Eng, D.O.Geneva, IL 601341639277551
  5. Katherine Fackler-Chapman, M.D.Geneva, IL 601341528068988
  6. Christopher Fahey, M.D.Geneva, IL 601341306926415
  7. Michael Fremgen, M.D.Geneva, IL 601341770583072
  8. Thomas Hazel, M.D.Geneva, IL 601341730189176

Common questions

What is Tiffany Y. Wen, M.D.'s NPI number?

Tiffany Y. Wen, M.D.'s National Provider Identifier (NPI) is 1407248941, issued on Feb 20, 2015. An NPI identifies a provider in billing; it is not a license.

Where is Tiffany Y. Wen, M.D. located?

The NPPES record lists a practice address at 2425 Fargo Blvd, Geneva, IL, 60134. Phone: (630) 232-2200. Providers update this record themselves, so call before visiting.

How can I verify Tiffany Y. Wen, M.D.'s license?

NPPES lists Illinois license number 036154142, 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 Tiffany Y. Wen, M.D. prescribe under Medicare Part D?

In 2024, Tiffany Y. Wen, M.D. had 3,275 Medicare Part D claims for 524 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.

What is Tiffany Y. Wen, M.D.'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.