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BRETT RIEDERMAN MD
NPI 1003375254
Internal Medicine in Northbrook, IL

Active since March 18, 2019Opted out of Medicare · through Oct 3, 2027
40 SKOKIE BLVD., SUITE 110, NORTHBROOK, IL 60062(224) 407-4400(224) 407-2255 Get Directions Write a Review

NPPES record last updated: November 19, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Nov 19, 2025, Mar 18, 2019 (2 updates tracked since 2019).

About Brett Riederman Md NPPES

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

BRETT RIEDERMAN MD (NPI 1003375254) is an individual internal medicine provider in Northbrook, Illinois, licensed in Illinois (125.073830) and active in the NPI registry since March 2019. He has opted out of Medicare through October 3, 2027 and remains eligible to order and refer.

NPPES Registry Identity

NPI1003375254
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameBRETT RIEDERMANCredential: MD
Location Address40 SKOKIE BLVD., SUITE 110Northbrook, IL 60062-1614
Mailing Address950 Technology Way, Suite 250Libertyville, IL 60048-5366 · (224) 407-4400 · Fax (224) 407-2255
Phone(224) 407-4400
Fax(224) 407-2255
Sole ProprietorNo
Enumeration DateMarch 18, 2019
Last NPPES UpdateNovember 19, 20252 updates tracked since enumeration
NPPES CertifiedNovember 19, 2025
✔ NPI 1003375254 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in IL · 125.073830
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.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
40 SKOKIE BLVD., Northbrook, IL 60062
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

ⓘ

Opted out of Medicare

Brett Riederman Md has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from October 3, 2025 through October 3, 2027.

Opt-Out Effective DateOctober 3, 2025
Opt-Out In Effect ThroughOctober 3, 2027Opt-out affidavits renew automatically every two years unless cancelled
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesAn opted-out provider can still order and refer for Medicare patients in the categories marked above, even though their own services are not covered.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60062 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
$138.86 typical visit price
range $60.08 – $183.39
Typical copayment $34.71 (range $15.02 – $45.84)
Most-billed visit code 99204
Established Patient
$105.70 typical visit price
range $18.97 – $148.12
Typical copayment $26.42 (range $4.74 – $37.03)
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.

Other Providers at the Same Location NPPES 4

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

DR. TARA N TROY MD.
Specialist
40 SKOKIE BLVD., SUITE 110
NORTHBROOK, IL 60062
Cook County (224) 407-4400
CLAUS J FIMMEL MD
Internal Medicine (Gastroenterology)
40 SKOKIE BLVD., SUITE 110
NORTHBROOK, IL 60062
Cook County (224) 407-4400
GENE Z CHIAO MD
Internal Medicine
40 SKOKIE BLVD., SUITE 110
NORTHBROOK, IL 60062
Cook County (224) 207-4400
KRISTHINE FIDEL NAGUE NP
Clinical Nurse Specialist (Family Health)
40 SKOKIE BLVD., SUITE 110
NORTHBROOK, IL 60062
Cook County (224) 407-4400

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 Brett Riederman's NPI number?

The NPI number for Brett Riederman is 1003375254. It was assigned to this individual provider in the NPPES registry on March 18, 2019.

Where is Brett Riederman located?

Brett Riederman practices at 40 Skokie Blvd. Suite 110, Northbrook, IL 60062. The listed phone number is (224) 407-4400.

What is Brett Riederman's specialty?

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

Is Brett Riederman enrolled in Medicare?

No. Brett Riederman has opted out of Medicare through October 3, 2027. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out. The provider remains eligible to order and refer services for Medicare patients.

When was this NPI record last updated?

The NPPES record for Brett Riederman was last updated on November 19, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 months 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.