Muhammad Najjar, M.D.
Sleep Medicine (Psychiatry & Neurology) Physician · Northbrook, IL
Muhammad Najjar, M.D. is a sleep medicine (psychiatry & neurology) physician with a practice address in Northbrook, Illinois, and NPI 1265489140, issued on May 27, 2006. Check the license (Illinois 336062062, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Muhammad Najjar
- Credential
- M.D.
- Primary taxonomy
- Sleep Medicine (Psychiatry & Neurology) Physician 2084S0012X
- License numbers
- 336062062 IL
01067650 IN
Self-reported in NPPES; status is on the state search - Practice location
- 1535 Lake Cook RD Ste 206, Northbrook, IL 60062
- Phone
- (847) 674-3600
- Enumerated
- May 27, 2006
- Record last updated
- Jan 22, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (847) 674-3639
- Medicaid IDs
- 200932940C IN
201046350 IN - Medicare enrollment
- Enrolled (PECOS I20040202000409); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest sleep medicine (psychiatry & neurology) physician records → All 28 in Illinois → Look up another NPI →
Also registered at 1535 Lake Cook RD Ste 206
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Lisa Levick-Doane, DPMFoot & Ankle Surgery Podiatrist1730491465
Verify Muhammad Najjar in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 336062062Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
91% fewer Medicare Part D claims than the average sleep medicine (psychiatry & neurology) physician in 2024
60 Medicare Part D claims for 20 beneficiaries, against an average of 655 among the 377 providers of this specialty who prescribed in Part D. Brand-name drugs were 23% of claims.
Most prescribed
- Gabapentin20 claims
- Trazodone Hcl19 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: $80,547.36
3 payments; by number, the most common kind was food and beverage; the largest payer was Snap Diagnostics LLC. The 278 providers of this specialty with any payment received $5,572.43 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
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
- The Board OF Trustees OF The University OF IllinoisChicago, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Muhammad Najjar among 28 sleep medicine (psychiatry & neurology) physician records in Illinois
Muhammad Najjar, M.D. is one of 28 sleep medicine (psychiatry & neurology) physician records with a practice address in Illinois. 93% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 0% of them.
- NPI issued2006 · 0% of these records are older, 61% newer
- In a Medicare fileYes · 93% of these records are
- In the CMS Doctors and Clinicians fileYes · 89% of these records are
- Graduated1991 · median 2004 among the 25 with a school on file
- Record last updated2018 · 36% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084S0012X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Sleep Medicine (Psychiatry & Neurology) Physician providers in Illinois
There are 28 sleep medicine (psychiatry & neurology) physician records in Illinois.
All 28 in Illinois → Every provider in Northbrook → Sleep Medicine (Psychiatry & Neurology) Physician nationwide →
The 8 sleep medicine (psychiatry & neurology) physician records with the nearest ZIP codes
- Edwin Simon, M.D.Vernon Hills, IL 600611376503292
- Darius Loghmanee, M.D.Park Ridge, IL 600681164589719
- Nabeela Nasir, M.DLincolnshire, IL 600691225143456
- Camelia Musleh, MDSkokie, IL 600761619292968
- Joya Paul, MDSkokie, IL 600761770730095
- Thomas Freedom, MDGlenview, IL 600261073672598
- Mari Viola Saltzman, D.O.Glenview, IL 600261467613810
- Ahmer Ali, M.D.Lake Barrington, IL 600101275825978
Common questions
What is Muhammad Najjar, M.D.'s NPI number?
Muhammad Najjar, M.D.'s National Provider Identifier (NPI) is 1265489140, issued on May 27, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Muhammad Najjar, M.D. located?
The NPPES record lists a practice address at 1535 Lake Cook RD Ste 206, Northbrook, IL, 60062. Phone: (847) 674-3600. Providers update this record themselves, so call before visiting.
How can I verify Muhammad Najjar, M.D.'s license?
NPPES lists Illinois license number 336062062, 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 Muhammad Najjar, M.D. prescribe under Medicare Part D?
In 2024, Muhammad Najjar, M.D. had 60 Medicare Part D claims for 20 beneficiaries; the average among sleep medicine (psychiatry & neurology) physician prescribers was 655. 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.