NPPES file of Aug 9, 2026

Roula Al-Dahhak, M.D.

Neurology Physician · O Fallon, IL

Roula Al-Dahhak, M.D. is a neurology physician with a practice address in O Fallon, Illinois, and NPI 1033116165, issued on Jul 5, 2005. Check the license (Illinois 036176244, 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 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1033116165
Name
Roula Al-Dahhak
Credential
M.D.
Primary taxonomy
Neurology Physician 2084N0400X
License numbers
036176244 IL
2010011111 MO
35082826 OH
Self-reported in NPPES; status is on the state search
Practice location
3 Saint Elizabeth Blvd Ste 5000, O Fallon, IL 62269
Phone
(618) 641-5803
Enumerated
Jul 5, 2005
Record last updated
Sep 29, 2025
Fax
(618) 607-5116
Medicaid ID
2537919 OH
Medicare enrollment
Enrolled (PECOS I20250909004016); accepts Medicare assignment
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 3 Saint Elizabeth Blvd Ste 5000

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

  1. Bassim Assioun, M.D.Nephrology Physician1669785408
  2. Zachary Berg, M.D.Pulmonary Disease Physician1255741278
  3. Angela Croessman-Marshall, AGNP-CAdult Health Nurse Practitioner1023994274
  4. Randall Dooley, MDUrology Physician1619940640
  5. Allison Harris, PA-CPhysician Assistant1790588739
  6. Kostantinos Psihramis, M.D.Urology Physician1902889793

Verify Roula Al-Dahhak 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 036176244
    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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96% fewer Medicare Part D claims than the average neurology physician in 2024

55 Medicare Part D claims for 16 beneficiaries, against an average of 1,370 among the 15,005 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.

  1. Roula Al-Dahhak55
  2. Specialty average1,370

Most prescribed

  1. Gabapentin22 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.

Bills Medicare through 2 group practices

  1. Fairview Heights Medical Group SCSaint Peters, MO
  2. Hshs Medical Group IncO Fallon, IL

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

Roula Al-Dahhak among 952 neurology physician records in Illinois

Roula Al-Dahhak, M.D. is one of 952 neurology physician records with a practice address in Illinois. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 92% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileYes · 60% of these records are
  • Graduated1993 · median 2006 among the 573 with a school on file
  • Record last updated2025 · 42% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084N0400X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Neurology Physician providers in Illinois

There are 952 neurology physician records in Illinois.

The 8 neurology physician records with the nearest ZIP codes

  1. Adaku Uzo-Okereke, M.D.O Fallon, IL 622691497105704
  2. Andrew Ackell, MDQuincy, IL 623011942793237
  3. Muhammad Arshid, M.DQuincy, IL 623011043892631
  4. Austin Hake, M.D.Quincy, IL 623011003077389
  5. Linda Johnson, M.D.Quincy, IL 623011083687578
  6. Ahmed JouanQuincy, IL 623011043766314
  7. Daniel Kimple, MDQuincy, IL 623011699030551
  8. Douglas Sullivant, MDQuincy, IL 623011467425603

Common questions

What is Roula Al-Dahhak, M.D.'s NPI number?

Roula Al-Dahhak, M.D.'s National Provider Identifier (NPI) is 1033116165, issued on Jul 5, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Roula Al-Dahhak, M.D. located?

The NPPES record lists a practice address at 3 Saint Elizabeth Blvd Ste 5000, O Fallon, IL, 62269. Phone: (618) 641-5803. Providers update this record themselves, so call before visiting.

How can I verify Roula Al-Dahhak, M.D.'s license?

NPPES lists Illinois license number 036176244, 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 Roula Al-Dahhak, M.D. prescribe under Medicare Part D?

In 2024, Roula Al-Dahhak, M.D. had 55 Medicare Part D claims for 16 beneficiaries; the average among neurology physician prescribers was 1,370. 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.