NPPES file of Aug 9, 2026

Nader S. Dahdaleh, M.D.

Neurological Surgery Physician · Chicago, IL

Nader S. Dahdaleh, M.D. is a neurological surgery physician with a practice address in Chicago, Illinois, and NPI 1831307339, issued on May 18, 2007. Check the license (Illinois 036131201, 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 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1831307339
Name
Nader S. Dahdaleh
Credential
M.D.
Primary taxonomy
Neurological Surgery Physician 207T00000X
License number
036131201 IL
Self-reported in NPPES; status is on the state search
Practice location
259 E Erie St Ste 13-205, Chicago, IL 60611
Phone
(312) 695-8143
Enumerated
May 18, 2007
Record last updated
Feb 25, 2021 (not updated in 5 years: call before relying on the address or phone)
Fax
(312) 695-4075
Medicare enrollment
Enrolled (PECOS I20130625000349); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
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 259 E Erie St Ste 13-205

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

  1. John Davis III, DPTPhysical Therapist1710533252
  2. Adam Edelstein, MDAdult Reconstructive Orthopaedic Surgery Physician1013279082
  3. Lindsay Fitzpatrick, PA-CPhysician Assistant1720635741
  4. Natalie Garino, APRN, CNPNurse Practitioner1063363190
  5. Rachel Gross, PA-CSurgical Physician Assistant1316606338
  6. Erik Howland, PTPhysical Therapist1508142332

Verify Nader S. Dahdaleh 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 036131201
    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

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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2% fewer Medicare Part D claims than the average neurological surgery physician in 2024

169 Medicare Part D claims for 109 beneficiaries, against an average of 172 among the 4,378 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.

  1. Nader Dahdaleh169
  2. Specialty average172

Most prescribed

  1. Gabapentin71 claims
  2. Mupirocin62 claims
  3. Methylprednisolone22 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.

The MIPS final score for 2023 (Medicare payment program): 94.1 of 100

The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score82.6
  2. Costnot scored (reweighted)
  3. Promoting interoperabilityout of 100 · 25%100.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $692.20

10 payments; by number, the most common kind was food and beverage; the largest payer was DePuy Synthes Sales Inc. The 5,377 providers of this specialty with any payment received $14,925.58 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Nader Dahdaleh$692
  2. Specialty average$14,926

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. Northwestern Medical Faculty FoundationBloomingdale, IL

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

Nader S. Dahdaleh among 375 neurological surgery physician records in Illinois

Nader S. Dahdaleh, M.D. is one of 375 neurological surgery physician records with a practice address in Illinois. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 37% of them.

  • NPI issued2007 · 37% of these records are older, 54% newer
  • In a Medicare fileYes · 77% of these records are
  • In the CMS Doctors and Clinicians fileYes · 53% of these records are
  • Graduated2004 · median 2004 among the 199 with a school on file
  • Record last updated2021 · 50% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207T00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Neurological Surgery Physician providers in Illinois

There are 375 neurological surgery physician records in Illinois.

The 8 neurological surgery physician records with the nearest ZIP codes

  1. James Chandler, MDChicago, IL 606111881656411
  2. George Cybulski, MDChicago, IL 606111336107937
  3. Sunit Das, M.D., PH.D.Chicago, IL 606111114173804
  4. Aruna Ganju, MDChicago, IL 606111366487969
  5. Amy Heimberger, M.D.Chicago, IL 606111235220955
  6. Babak Jahromi, MDChicago, IL 606111467616193
  7. Michel Kliot, M.D.Chicago, IL 606111952411001
  8. Tyler Koski, MDChicago, IL 606111124041603

Common questions

What is Nader S. Dahdaleh, M.D.'s NPI number?

Nader S. Dahdaleh, M.D.'s National Provider Identifier (NPI) is 1831307339, issued on May 18, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Nader S. Dahdaleh, M.D. located?

The NPPES record lists a practice address at 259 E Erie St Ste 13-205, Chicago, IL, 60611. Phone: (312) 695-8143. Providers update this record themselves, so call before visiting.

How can I verify Nader S. Dahdaleh, M.D.'s license?

NPPES lists Illinois license number 036131201, 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 Nader S. Dahdaleh, M.D. prescribe under Medicare Part D?

In 2024, Nader S. Dahdaleh, M.D. had 169 Medicare Part D claims for 109 beneficiaries; the average among neurological surgery physician prescribers was 172. Part D covers Medicare prescriptions only.

What is Nader S. Dahdaleh, M.D.'s MIPS final score?

The 2023 MIPS final score is 94.1 of 100. The average among 454,083 clinicians with a measured score was 83.5.

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.