DR. LEEN HUSNI ALI AL-SAYYED M.D.
NPI 1053626242
Internal Medicine - Gastroenterology in Saint Louis, MO
About Dr. Leen Husni Ali Al-sayyed M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. LEEN HUSNI ALI AL-SAYYED M.D. (NPI 1053626242) is an individual gastroenterology provider in Saint Louis, Missouri, licensed in Missouri (2014012498) and active in the NPI registry since August 2010. She is enrolled in Medicare PECOS, is affiliated with Truman Medical Center Hospital Hill, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 4
Secondary Practice Locations 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Leen Husni Ali Al-sayyed M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show Leen Al-sayyed reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Saint Louis, MO 63141
- Reassigned Medicare billing, Missouri enrollment
- 611 clinicians in this Medicare group
Kansas City, MO 64108
- Reassigned Medicare billing, Missouri enrollment
- 518 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 6
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Truman Medical Center Hospital Hill
Acute Care Hospitals · Kansas City, MOMissouri Baptist Medical Center
Acute Care Hospitals · Town And Country, MOBarnes-Jewish West County Hospital
Acute Care Hospitals · Creve Coeur, MOProgress West Hospital
Acute Care Hospitals · O Fallon, MOPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 63131 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 9
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SAINT LOUIS, MO 63131
SAINT LOUIS, MO 63131
SAINT LOUIS, MO 63131
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Leen Al-sayyed's NPI number?
The NPI number for Leen Al-sayyed is 1053626242. It was assigned to this individual provider in the NPPES registry on August 11, 2010.
Where is Leen Al-sayyed located?
Leen Al-sayyed practices at 3009 N Ballas Rd Ste 359C, Saint Louis, MO 63131. The listed phone number is (314) 996-3520.
What is Leen Al-sayyed's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.
Is Leen Al-sayyed enrolled in Medicare?
Yes. Leen Al-sayyed is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Leen Al-sayyed's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Leen Al-sayyed reassigns Medicare benefits to 2 organizations: Physician Groups Lc (Saint Louis, MO) and University Health Physicians (Kansas City, MO). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Leen Al-sayyed's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Leen Al-sayyed accept?
Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from Arkansas Health & Wellness, Ambetter from Sunflower Health Plan and Ambetter of Oklahoma and 3 other insurers list Leen Al-sayyed as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Leen Al-sayyed affiliated with any hospitals?
According to CMS data, Leen Al-sayyed is affiliated with Truman Medical Center Hospital Hill, Missouri Baptist Medical Center, Barnes-Jewish West County Hospital and Progress West Hospital.
When was this NPI record last updated?
The NPPES record for Leen Al-sayyed was last updated on November 6, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. Leen Husni Ali Al-Sayyed, M.D. · NPI 1053626242
Gastroenterology physician in Saint Louis, Missouri. Individual provider, active in the CMS NPPES registry since August 11, 2010.
## Identity
- **NPI:** 1053626242 (Entity type: Individual)
- **Enumerated:** August 11, 2010
- **Primary specialty:** Internal Medicine - Gastroenterology · taxonomy 207RG0100X
- **State license:** 2014012498 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 3009 N BALLAS RD STE 359C, Saint Louis, MO 63131-2324
- **Phone:** (314) 996-3520
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Physician Groups Lc (NPI 1285664268, Saint Louis, MO); University Health Physicians (NPI 1669456257, Kansas City, MO) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2007
## Record status
- **NPPES last updated:** November 6, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1053626242) · Data from the CMS NPPES public registry.