NPPES file of Aug 9, 2026

Brent M. Nathan, MD

Internal Medicine Physician · Bannockburn, IL

Brent M. Nathan, MD is an internal medicine physician with a practice address in Bannockburn, Illinois, and NPI 1639559719, issued on Jun 4, 2015. Check the license (Illinois 036144667, 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
1639559719
Name
Brent M. Nathan
Credential
MD
Primary taxonomy
Internal Medicine Physician 207R00000X
License numbers
036144667 IL
125067282 IL
Self-reported in NPPES; status is on the state search
Practice location
2101 Waukegan RD Ste 104, Bannockburn, IL 60015
Phone
(847) 317-1717
Enumerated
Jun 4, 2015
Record last updated
Aug 17, 2021 (not updated in 5 years: call before relying on the address or phone)
Fax
(847) 317-9305
Medicare enrollment
Enrolled (PECOS I20180808000020); accepts Medicare assignment
Medical or professional school
Rush Medical College Of Rush University, 2015
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 2101 Waukegan RD Ste 104

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

  1. Sabrina Jones, M.D.Internal Medicine Physician1518371889
  2. Hannah Leavitt, DNP-CPrimary Care Nurse Practitioner1962866749

Verify Brent M. Nathan 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 036144667
    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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37% more Medicare Part D claims than the average internal medicine physician in 2024

4,342 Medicare Part D claims for 308 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 48 claims were for opioids.

  1. Brent Nathan4,342
  2. Specialty average3,176

Most prescribed

  1. Atorvastatin Calcium320 claims
  2. Rosuvastatin Calcium184 claims
  3. Levothyroxine Sodium110 claims
  4. Amlodipine Besylate98 claims
  5. Losartan Potassium96 claims
  6. Hydrochlorothiazide83 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: $304.55

7 payments; by number, the most common kind was food and beverage; the largest payer was Edwards Lifesciences Corporation. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Brent Nathan$304.55
  2. Specialty average$1,303.06

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. Brent M Nathan MD PLLCBannockburn, IL

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

Brent M. Nathan among 7,238 internal medicine physician records in Illinois

Brent M. Nathan, MD is one of 7,238 internal medicine physician records with a practice address in Illinois. 73% 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 61% of them.

  • NPI issued2015 · 61% of these records are older, 37% newer
  • In a Medicare fileYes · 73% of these records are
  • In the CMS Doctors and Clinicians fileYes · 50% of these records are
  • Graduated2015 · median 2003 among the 3,580 with a school on file
  • Record last updated2021 · 47% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

8 internal medicine physician records list a practice address in Bannockburn

They are 8 of the 177 NPPES records with a practice address in Bannockburn, and 7,238 internal medicine physician records in Illinois.

The 8 internal medicine physician records with the nearest ZIP codes

  1. Lewis Barr, M.D.Riverwoods, IL 600151245267962
  2. Dana Ben-Dov, MDDeerfield, IL 600151194709477
  3. Mitul DesaiDeerfield, IL 600151437118361
  4. Jeffrey Foreman, M.D.Deerfield, IL 600151881663243
  5. Larry Kaskel, MDBannockburn, IL 600151285620484
  6. Tom Klein, MDRiverwoods, IL 600151326094194
  7. Monika McLain, MDBannockburn, IL 600151376539718
  8. Lisa Peck, M.D.Deerfield, IL 600151679539563

Common questions

What is Brent M. Nathan, MD's NPI number?

Brent M. Nathan, MD's National Provider Identifier (NPI) is 1639559719, issued on Jun 4, 2015. An NPI identifies a provider in billing; it is not a license.

Where is Brent M. Nathan, MD located?

The NPPES record lists a practice address at 2101 Waukegan RD Ste 104, Bannockburn, IL, 60015. Phone: (847) 317-1717. Providers update this record themselves, so call before visiting.

How can I verify Brent M. Nathan, MD's license?

NPPES lists Illinois license number 036144667, 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 Brent M. Nathan, MD prescribe under Medicare Part D?

In 2024, Brent M. Nathan, MD had 4,342 Medicare Part D claims for 308 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.