NPPES file of Aug 9, 2026

Walter J. Whang, MD

Psychiatry Physician · Woodridge, IL

Walter J. Whang, MD is a psychiatry physician with a practice address in Woodridge, Illinois, and NPI 1245217942, issued on Dec 23, 2005. Check the license (Illinois 036081028, 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
1245217942
Name
Walter J. Whang
Credential
MD
Primary taxonomy
Psychiatry Physician 2084P0800X
License number
036081028 IL
Self-reported in NPPES; status is on the state search
Practice location
3540 Seven Bridges Dr Ste 230, Woodridge, IL 60517
Phone
(630) 964-9400
Enumerated
Dec 23, 2005
Record last updated
Mar 10, 2009 (not updated in 17 years: call before relying on the address or phone)
Fax
(630) 964-9375
Medicaid ID
036081028 1 IL
Medicare enrollment
Enrolled (PECOS I20051007000493); accepts Medicare assignment
Medical or professional school
Northeastern Ohio University College Of Medicine, 1988
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 Walter J. Whang 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 036081028
    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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33% more Medicare Part D claims than the average psychiatry physician in 2024

1,334 Medicare Part D claims for 72 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D.

  1. Walter Whang1,334
  2. Specialty average1,000

Most prescribed

  1. Bupropion Xl108 claims
  2. Alprazolam95 claims
  3. Clonazepam93 claims
  4. Lorazepam76 claims
  5. Trazodone Hcl67 claims
  6. Olanzapine65 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): 91.4 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 score82.7
  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 GroupElmhurst, IL

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

Walter J. Whang among 2,147 psychiatry physician records in Illinois

Walter J. Whang, MD is one of 2,147 psychiatry physician records with a practice address in Illinois. 69% 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, 95% newer
  • In a Medicare fileYes · 69% of these records are
  • In the CMS Doctors and Clinicians fileYes · 41% of these records are
  • Graduated1988 · median 2004 among the 877 with a school on file
  • Record last updated2009 · 53% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

6 psychiatry physician records list a practice address in Woodridge

They are 6 of the 512 NPPES records with a practice address in Woodridge, and 2,147 psychiatry physician records in Illinois.

The 8 psychiatry physician records with the nearest ZIP codes

  1. Susan Ahmari, MDWoodridge, IL 605171356328058
  2. Barbara Benton, M.D.Woodridge, IL 605171073612941
  3. Catherine Camilleri, MDWoodridge, IL 605171699752204
  4. Muhammad Choudhry, M.D.Woodridge, IL 605171841356540
  5. Renu Gupta, M.D.Woodridge, IL 605171609908383
  6. Paul Cherian, MDDowners Grove, IL 605151902082332
  7. Donna Dobrowolsky, MDDowners Grove, IL 605151194825851
  8. Chloe El-Atoum, M.D.Downers Grove, IL 605151619409042

Common questions

What is Walter J. Whang, MD's NPI number?

Walter J. Whang, MD's National Provider Identifier (NPI) is 1245217942, issued on Dec 23, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Walter J. Whang, MD located?

The NPPES record lists a practice address at 3540 Seven Bridges Dr Ste 230, Woodridge, IL, 60517. Phone: (630) 964-9400. Providers update this record themselves, so call before visiting.

How can I verify Walter J. Whang, MD's license?

NPPES lists Illinois license number 036081028, 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 Walter J. Whang, MD prescribe under Medicare Part D?

In 2024, Walter J. Whang, MD had 1,334 Medicare Part D claims for 72 beneficiaries; the average among psychiatry physician prescribers was 1,000. Part D covers Medicare prescriptions only.

What is Walter J. Whang, MD's MIPS final score?

The 2023 MIPS final score is 91.4 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.