Youssef Assioun, MD
Gastroenterology Physician · Saint Louis, MO
Youssef Assioun, MD is a gastroenterology physician with a practice address in Saint Louis, Missouri, and NPI 1639370919, issued on May 31, 2007. Check the license (Missouri 2010006463, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Youssef Assioun
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 2010006463 MO
Self-reported in NPPES; status is on the state search - Practice location
- 10012 Kennerly RD Ste 102, Saint Louis, MO 63128
- Phone
- (314) 543-5911
- Enumerated
- May 31, 2007
- Record last updated
- Sep 8, 2023
- Fax
- (314) 543-5914
- Medicare enrollment
- Enrolled (PECOS I20120427000439); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 414 in Missouri → Look up another NPI →
Also registered at 10012 Kennerly RD Ste 102
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Aireen-Ronalda Agulto, MDGastroenterology Physician1447771191
- Zarir AhmedGastroenterology Physician1770937492
- Badr Alhumayyd, MBBSGastroenterology Physician1821659095
- Mohammed Eyad Alsabbagh, M.D.Gastroenterology Physician1083917090
- Cheryl Bayens, FNPFamily Nurse Practitioner1679967673
- Faiza Bhatti, M.D.,Gastroenterology Physician1144556499
Verify Youssef Assioun in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMissouri Board of Registration for the Healing Arts
Search for license 2010006463Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
28% more Medicare Part D claims than the average gastroenterology physician in 2024
1,035 Medicare Part D claims for 483 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims.
Most prescribed
- Gavilyte-G227 claims
- Omeprazole168 claims
- Pantoprazole Sodium135 claims
- Gavilyte-C84 claims
- Peg-3350 And Electrolytes57 claims
- Famotidine49 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: $1,776.18
56 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 13,350 providers of this specialty with any payment received $5,015.95 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
- Mercy Clinic Gastroenterology LLCSaint Louis, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Youssef Assioun among 414 gastroenterology physician records in Missouri
Youssef Assioun, MD is one of 414 gastroenterology physician records with a practice address in Missouri. 84% 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 53% of them.
- NPI issued2007 · 53% of these records are older, 40% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 73% of these records are
- Graduated2003 · median 2003 among the 303 with a school on file
- Record last updated2023 · 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 207RG0100X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Missouri
There are 414 gastroenterology physician records in Missouri.
All 414 in Missouri → Every provider in Saint Louis → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Yazan Abdalla, M.D.Saint Louis, MO 631281033365358
- Aireen-Ronalda Agulto, MDSaint Louis, MO 631281447771191
- Zarir AhmedSaint Louis, MO 631281770937492
- Badr Alhumayyd, MBBSSaint Louis, MO 631281821659095
- Samer Alkaade, M DSaint Louis, MO 631281982648259
- Mohammed Eyad Alsabbagh, M.D.Saint Louis, MO 631281083917090
- Faiza Bhatti, M.D.,Saint Louis, MO 631281144556499
- Timothy Brady, MDSt Louis, MO 631281518056258
Common questions
What is Youssef Assioun, MD's NPI number?
Youssef Assioun, MD's National Provider Identifier (NPI) is 1639370919, issued on May 31, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Youssef Assioun, MD located?
The NPPES record lists a practice address at 10012 Kennerly RD Ste 102, Saint Louis, MO, 63128. Phone: (314) 543-5911. Providers update this record themselves, so call before visiting.
How can I verify Youssef Assioun, MD's license?
NPPES lists Missouri license number 2010006463, as entered by the provider. Search the Missouri Board of Registration for the Healing Arts at https://www.fsmb.org/contact-a-state-medical-board/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Youssef Assioun, MD prescribe under Medicare Part D?
In 2024, Youssef Assioun, MD had 1,035 Medicare Part D claims for 483 beneficiaries; the average among gastroenterology physician prescribers was 811. 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.