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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. BRENT M NATHAN MD
NPI 1639559719
Internal Medicine in Bannockburn, IL

Active since June 04, 2015PECOS EnrolledAccepts Medicare Assignment
2101 WAUKEGAN RD STE 200, BANNOCKBURN, IL 60015(847) 317-1717(847) 317-9305 Get Directions Write a Review

NPPES record last updated: October 7, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Oct 7, 2026, Aug 17, 2021, Jun 19, 2018 (3 updates tracked since 2018).

About Dr. Brent M Nathan Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. BRENT M NATHAN MD (NPI 1639559719) is an individual internal medicine provider in Bannockburn, Illinois, licensed in Illinois (036144667) and active in the NPI registry since June 2015. He is enrolled in Medicare PECOS, is affiliated with Northshore University Healthsystem - Evanston Hospital, and is a graduate of Rush Medical College Of Rush University (2015).

NPPES Registry Identity

NPI1639559719
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. BRENT M NATHANCredential: MD
Location Address2101 WAUKEGAN RD STE 200Bannockburn, IL 60015-1800
Mailing Address2101 Waukegan Rd Ste 200Bannockburn, IL 60015-1800 · (847) 317-1717 · Fax (847) 317-9305
Phone(847) 317-1717
Fax(847) 317-9305
Sole ProprietorNo
Medical School CMSRush Medical College Of Rush UniversityGraduated 2015
Enumeration DateJune 4, 2015
Last NPPES UpdateOctober 7, 20263 updates tracked since enumeration
NPPES CertifiedOctober 7, 2026
✔ NPI 1639559719 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
Licenses✔ Licensed in IL · 036144667✔ Licensed in IL · 125067282
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
2101 WAUKEGAN RD STE 200, Bannockburn, IL 60015
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Brent M Nathan Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID1557651668
PECOS Enrollment IDI20180808000020
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Brent Nathan reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Brent M Nathan MD PLLC
Same address
Internal Medicine
2101 WAUKEGAN RD STE 200
Bannockburn, IL 60015
  • Reassigned Medicare billing, Illinois enrollment
  • 5 clinicians in this Medicare group
NPI 1831083088 (847) 317-1717

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 9

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
188 services118 patients
Routine electrocardiogram (ecg) using at least 12 leads with tracing 93005
An Electrocardiogram (ECG) is a simple, painless test that records the heart's electrical activity. Using 12 leads attached to your skin, it generates a tracing of your heart rhythm. It helps detect any heart problems by showing the timing and strength of electrical signals passing through each part of your heart.
128 services116 patients
Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212
This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.
121 services81 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
80 services59 patients
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439
An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.
55 services55 patients
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010
A routine electrocardiogram (ECG) with 12 leads is a simple, non-invasive test that records the electrical activity of your heart. It helps in identifying heart conditions by detecting irregularities in your heart rhythms. The results are interpreted and a report is provided.
19 services19 patients

Hospital Affiliations CMS Care Compare 3

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Northshore University Healthsystem - Evanston Hospital

Acute Care Hospitals · Evanston, IL
5/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number140010
Location2650 Ridge AveEvanston, IL 60201 · Cook County
Emergency services Birthing friendly

Northwestern Lake Forest Hospital

Acute Care Hospitals · Lake Forest, IL
5/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number140130
Location1000 N Westmoreland RoadLake Forest, IL 60045 · Lake County
Emergency services Birthing friendly

Northwestern Memorial Hospital

Acute Care Hospitals · Chicago, IL
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number140281
Location251 E Huron StChicago, IL 60611 · Cook County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60015 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$137.43 typical visit price
range $59.81 – $181.38
Typical copayment $34.35 (range $14.95 – $45.34)
Most-billed visit code 99204
Established Patient
$105.07 typical visit price
range $19.15 – $147.12
Typical copayment $26.26 (range $4.78 – $36.78)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims 2

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Hospital bed, semi-electric (head and foot adjustment), with any type side rails, with mattress E0260
DME-Hospital Beds · category DB000N
1 supplier12 claims12 services$36.27 avg. paid by Medicare
Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390
DME-Oxygen and Supplies · category DC002N
1 supplier12 claims12 services$68.39 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. GERALD JAY OSHER M.D.
Internal Medicine
2101 WAUKEGAN RD STE 200
BANNOCKBURN, IL 60015
Lake County (847) 317-1717
BRENT M NATHAN MD PLLC
Internal Medicine
2101 WAUKEGAN RD STE 200
BANNOCKBURN, IL 60015
Lake County (847) 317-1717

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Brent Nathan's NPI number?

The NPI number for Brent Nathan is 1639559719. It was assigned to this individual provider in the NPPES registry on June 4, 2015.

Where is Brent Nathan located?

Brent Nathan practices at 2101 Waukegan Rd Ste 200, Bannockburn, IL 60015. The listed phone number is (847) 317-1717.

What is Brent Nathan's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Brent Nathan enrolled in Medicare?

Yes. Brent Nathan is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for Brent Nathan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Brent Nathan reassigns Medicare benefits to Brent M Nathan MD PLLC (Bannockburn, IL). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Brent Nathan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Brent Nathan affiliated with any hospitals?

According to CMS data, Brent Nathan is affiliated with Northshore University Healthsystem - Evanston Hospital, Northwestern Lake Forest Hospital and Northwestern Memorial Hospital.

When was this NPI record last updated?

The NPPES record for Brent Nathan was last updated on October 7, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.