Husam Ayash, M.D.
Internal Medicine Physician · Decatur, IL
Husam Ayash, M.D. is an internal medicine physician with a practice address in Decatur, Illinois, and NPI 1487863049, issued on May 21, 2007. Check the license on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Husam Ayash
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 44786 KY
Self-reported in NPPES; status is on the state search - Practice location
- 2300 N Edward St, Decatur, IL 62526
- Phone
- (217) 876-8121
- Enumerated
- May 21, 2007
- Record last updated
- Jan 13, 2017 (not updated in 9 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20110315000941); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,238 in Illinois → Look up another NPI →
Also registered at 2300 N Edward St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Husam Ayash in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional RegulationCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
74% fewer Medicare Part D claims than the average internal medicine physician in 2024
840 Medicare Part D claims for 344 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 25 claims were for opioids.
Most prescribed
- Prednisone90 claims
- Amoxicillin-Clavulanate Potass69 claims
- Pantoprazole Sodium66 claims
- Levofloxacin62 claims
- Doxycycline Monohydrate52 claims
- Doxycycline Hyclate42 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.
One hospital affiliation
- Decatur Memorial HospitalDecatur, IL · Acute Care Hospitals3 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Husam Ayash among 7,238 internal medicine physician records in Illinois
Husam Ayash, M.D. is one of 7,238 internal medicine physician records with a practice address in Illinois. 73% 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 39% of them.
- NPI issued2007 · 39% of these records are older, 55% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated2005 · median 2003 among the 3,580 with a school on file
- Record last updated2017 · 47% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
44 internal medicine physician records list a practice address in Decatur
They are 44 of the 1,513 NPPES records with a practice address in Decatur, and 7,238 internal medicine physician records in Illinois.
All 7,238 in Illinois → Every provider in Decatur → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Mohammed Akram, MD, MHADecatur, IL 625261619921806
- David Baumberger, M.D.Decatur, IL 625261043277064
- Carlos Fior, M.D.Decatur, IL 625261336237296
- William Franklin, M.D.Decatur, IL 625261407813389
- Stephen Goetter, M.D.Decatur, IL 625261003872219
- Elizabeth Holder, MDDecatur, IL 625261629123922
- Naeemuddin Jatoi, M.D.Decatur, IL 625261922070333
- Muhammad Khan, MDDecatur, IL 625261598767493
Common questions
What is Husam Ayash, M.D.'s NPI number?
Husam Ayash, M.D.'s National Provider Identifier (NPI) is 1487863049, issued on May 21, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Husam Ayash, M.D. located?
The NPPES record lists a practice address at 2300 N Edward St, Decatur, IL, 62526. Phone: (217) 876-8121. Providers update this record themselves, so call before visiting.
How can I verify Husam Ayash, M.D.'s license?
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 Husam Ayash, M.D. prescribe under Medicare Part D?
In 2024, Husam Ayash, M.D. had 840 Medicare Part D claims for 344 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.