NPPES file of Aug 9, 2026

Yoojin Kim Pak, M.D.

Endocrinology, Diabetes & Metabolism Physician · Lisle, IL

Yoojin Kim Pak, M.D. is an endocrinology, diabetes & metabolism physician with a practice address in Lisle, Illinois, and NPI 1003072877, issued on Jul 31, 2008. Check the license (Illinois 036127398, 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
1003072877
Name
Yoojin Kim Pak
Credential
M.D.
Primary taxonomy
Endocrinology, Diabetes & Metabolism Physician 207RE0101X
License number
036127398 IL
Self-reported in NPPES; status is on the state search
Practice location
430 Warrenville RD # 310, Lisle, IL 60532
Phone
(630) 789-4910
Enumerated
Jul 31, 2008
Record last updated
Aug 16, 2023
Fax
(630) 432-6744
Medicaid ID
036127398 IL
Medicare enrollment
Enrolled (PECOS I20130809000155); accepts Medicare assignment
Medical or professional school
Chicago College Of Medicine And Surgery, 2008
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.
Download card Updates feed

8 nearest endocrinology, diabetes & metabolism physician records → All 436 in Illinois → Look up another NPI →

Also registered at 430 Warrenville RD # 310

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

  1. Steven Baughman, MDUrology Physician1629176789

Verify Yoojin Kim Pak 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 036127398    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.

Is this page about you? You can ask us to correct, restrict or remove it: how.

85% more Medicare Part D claims than the average endocrinology, diabetes & metabolism physician in 2024

4,857 Medicare Part D claims for 594 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 44% of claims.

  1. Yoojin Pak4,857
  2. Specialty average2,630

Most prescribed

  1. Levothyroxine Sodium812 claims
  2. Metformin Hcl361 claims
  3. Ozempic268 claims
  4. Atorvastatin Calcium201 claims
  5. Lantus Solostar199 claims
  6. Jardiance166 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.

Industry payments in 2024: $274.38

13 payments; by number, the most common kind was food and beverage; the largest payer was Novo Nordisk Inc. The 5,661 providers of this specialty with any payment received $5,742.15 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Yoojin Pak$274.38
  2. Specialty average$5,742.15

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. Dupage Medical Group LtdLisle, IL

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

Yoojin Kim Pak among 436 endocrinology, diabetes & metabolism physician records in Illinois

Yoojin Kim Pak, M.D. is one of 436 endocrinology, diabetes & metabolism physician records with a practice address in Illinois. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 50% of them.

  • NPI issued2008 · 50% of these records are older, 43% newer
  • In a Medicare fileYes · 85% of these records are
  • In the CMS Doctors and Clinicians fileYes · 68% of these records are
  • Graduated2008 · median 2006 among the 295 with a school on file
  • Record last updated2023 · 46% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RE0101X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Endocrinology, Diabetes & Metabolism Physician providers in Illinois

There are 436 endocrinology, diabetes & metabolism physician records in Illinois.

All 436 in Illinois → Every provider in Lisle → Endocrinology, Diabetes & Metabolism Physician nationwide →

The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes

  1. Suchitra Bhakta, MDLisle, IL 605321912988247
  2. Murray Favus, MDBurr Ridge, IL 605271962564427
  3. Ann Lawrence, MDBurr Ridge, IL 605271417080276
  4. Plamen Penev, MDBurr Ridge, IL 605271467514919
  5. Samuel Refetoff, MDBurr Ridge, IL 605271518020031
  6. Uzma Syed, M.DWillowbrook, IL 605271023144698
  7. Safiya Elahi, DONaperville, IL 605401740784362
  8. Natasha KadakiaNaperville, IL 605401811484199

Common questions

What is Yoojin Kim Pak, M.D.'s NPI number?

Yoojin Kim Pak, M.D.'s National Provider Identifier (NPI) is 1003072877, issued on Jul 31, 2008. An NPI identifies a provider in billing; it is not a license.

Where is Yoojin Kim Pak, M.D. located?

The NPPES record lists a practice address at 430 Warrenville RD # 310, Lisle, IL, 60532. Phone: (630) 789-4910. Providers update this record themselves, so call before visiting.

How can I verify Yoojin Kim Pak, M.D.'s license?

NPPES lists Illinois license number 036127398, 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 Yoojin Kim Pak, M.D. prescribe under Medicare Part D?

In 2024, Yoojin Kim Pak, M.D. had 4,857 Medicare Part D claims for 594 beneficiaries; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.