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DR. MUHAMMAD NAJJAR M.D.
NPI 1265489140
Psychiatry & Neurology - Sleep Medicine in Northbrook, IL

Active since May 27, 2006PECOS EnrolledAccepts Medicare Assignment
1535 LAKE COOK RD STE 206, NORTHBROOK, IL 60062(847) 674-3600(847) 674-3639 Get Directions Write a Review

NPPES record last updated: January 22, 2018. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. Muhammad Najjar M.d. NPPES

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

DR. MUHAMMAD NAJJAR M.D. (NPI 1265489140) is an individual sleep medicine provider in Northbrook, Illinois, licensed in Indiana (01067650) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS, is affiliated with University Of Illinois Hospital And Clinics, and is a graduate of Other (1991).

NPPES Registry Identity

NPI1265489140
Entity TypeIndividualMale
Primary Taxonomy2084S0012X
Provider Legal NameDR. MUHAMMAD NAJJARCredential: M.D.
Location Address1535 LAKE COOK RD STE 206Northbrook, IL 60062-1451
Mailing Address1535 Lake Cook Rd Ste 206Northbrook, IL 60062-1451 · (847) 674-3600 · Fax (847) 674-3639
Phone(847) 674-3600
Fax(847) 674-3639
Sole ProprietorNo
Medical School CMSOtherGraduated 1991
Enumeration DateMay 27, 2006
Last NPPES UpdateJanuary 22, 2018
✔ NPI 1265489140 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPsychiatry & Neurology · Sleep MedicineAllopathic & Osteopathic Physicians
Taxonomy Code2084S0012X
License✔ Licensed in IN · 01067650
Definition
A Psychiatrist or Neurologist who practices Sleep Medicine is certified in the subspecialty of sleep medicine and specializes in the clinical assessment, physiologic testing, diagnosis, management and prevention of sleep and circadian rhythm disorders. Sleep specialists treat patients of any age and use multidisciplinary approaches. Disorders managed by sleep specialists include, but are not limited to, sleep related breathing disorders, insomnia, hypersomnias, circadian rhythm sleep disorders, parasomnias and sleep related movement disorders.
Also ListedPsychiatry & Neurology · NeurologyTaxonomy 2084N0400X · License 336062062 (IL)
1535 LAKE COOK RD STE 206, Northbrook, IL 60062
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Other Identifiers 2

Medicaid201046350IN
Medicaid200932940CIN

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield.Insurance ›

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. Muhammad Najjar M.d. 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 ID1850294588
PECOS Enrollment IDI20040202000409
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 Muhammad Najjar reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

The Board Of Trustees Of The University Of Illinois
16 mi
Primary Care
3656 N HALSTED ST
Chicago, IL 60613
  • Reassigned Medicare billing, Illinois enrollment
  • 2,127 clinicians in this Medicare group
NPI 1588815401 (734) 726-4697

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 4

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.
52 services47 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.
30 services25 patients
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203
This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.
12 services12 patients
Sleep study in sleep lab with continuous airway pressure (6 years or older) 95811
A sleep study in a sleep lab with continuous airway pressure is a test for individuals aged 6 and above. It monitors your sleep patterns to check for disorders like sleep apnea. Continuous airway pressure helps keep your airways open while you sleep, improving your breathing.
11 services11 patients

Hospital Affiliations CMS Care Compare

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

University Of Illinois Hospital And Clinics

Acute Care Hospitals · Chicago, IL
2/5 CMS rating
OwnershipGovernment - State
CMS Certification Number140150
Location1740 West Taylor St Suite 1400Chicago, IL 60612 · Cook County
Emergency services Birthing friendly

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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

Reported Quality Measures

Documentation of Current Medications in the Medical Record
Percentage of visits for patients aged 18 years and older for which the eligible professional or eligible clinician attests to documenting a list of current medications using all immediate resources available on the date of the encounter.
95%20 patients4/55-star benchmark: 100%
Sleep Apnea: Assessment of Sleep Symptoms
Percentage of visits for patients aged 18 years and older with a diagnosis of obstructive sleep apnea that includes documentation of an assessment of sleep symptoms, including presence or absence of snoring and daytime sleepiness
100%20 patients5/55-star benchmark: 100%
Sleep Apnea: Positive Airway Pressure Therapy Prescribed
Percentage of patients aged 18 years and older with a diagnosis of moderate or severe obstructive sleep apnea who were prescribed positive airway pressure therapy
100%20 patients
Sleep Apnea: Severity Assessment at Initial Diagnosis
Percentage of patients aged 18 years and older with a diagnosis of obstructive sleep apnea who had an apnea hypopnea index (AHI) or a respiratory disturbance index (RDI) measured at the time of initial diagnosis
100%20 patients5/55-star benchmark: 100%
Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Referred Medical Equipment & Supplies CMS DME claims 16

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

Tubing with integrated heating element for use with positive airway pressure device A4604
DME-Other DME · category DE001N
15 suppliers210 claims210 services$33.03 avg. paid by Medicare
Full face mask used with positive airway pressure device, each A7030
DME-Other DME · category DE001N
14 suppliers139 claims139 services$69.09 avg. paid by Medicare
Face mask interface, replacement for full face mask, each A7031
DME-Other DME · category DE001N
14 suppliers150 claims381 services$26.53 avg. paid by Medicare
Cushion for use on nasal mask interface, replacement only, each A7032
DME-Other DME · category DE001N
13 suppliers65 claims356 services$14.07 avg. paid by Medicare
Pillow for use on nasal cannula type interface, replacement only, pair A7033
DME-Other DME · category DE001N
7 suppliers41 claims220 services$13.17 avg. paid by Medicare
Nasal interface (mask or cannula type) used with positive airway pressure device, with or without head strap A7034
DME-Other DME · category DE001N
16 suppliers109 claims109 services$45.46 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. LISA TOMMI LEVICK-DOANE DPM
Podiatrist (Foot & Ankle Surgery)
1535 LAKE COOK RD STE 206
NORTHBROOK, IL 60062
Cook County (224) 723-5588
LISA LEVICK, DPM, P.C.
Podiatrist (Foot & Ankle Surgery)
1535 LAKE COOK RD STE 206
NORTHBROOK, IL 60062
Cook County (248) 752-7520

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 Muhammad Najjar's NPI number?

The NPI number for Muhammad Najjar is 1265489140. It was assigned to this individual provider in the NPPES registry on May 27, 2006.

Where is Muhammad Najjar located?

Muhammad Najjar practices at 1535 Lake Cook Rd Ste 206, Northbrook, IL 60062. The listed phone number is (847) 674-3600.

What is Muhammad Najjar's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Sleep Medicine, with taxonomy code 2084S0012X.

Is Muhammad Najjar enrolled in Medicare?

Yes. Muhammad Najjar 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 Muhammad Najjar's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Muhammad Najjar reassigns Medicare benefits to The Board Of Trustees Of The University Of Illinois (Chicago, 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 Muhammad Najjar's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Muhammad Najjar accept?

Health plans from Anthem Blue Cross and Blue Shield list Muhammad Najjar as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Muhammad Najjar affiliated with any hospitals?

According to CMS data, Muhammad Najjar is affiliated with University Of Illinois Hospital And Clinics.

When was this NPI record last updated?

The NPPES record for Muhammad Najjar was last updated on January 22, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 years 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.