DR. SIRIVAN SUON SENG M.D.
NPI 1487184859
Surgery - Surgical Critical Care in Saint Louis, MO
About Dr. Sirivan Suon Seng M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. SIRIVAN SUON SENG M.D. (NPI 1487184859) is an individual surgical critical care provider in Saint Louis, Missouri, licensed in Missouri (2025017589) and active in the NPI registry since June 2017. She is enrolled in Medicare PECOS, is affiliated with Mercy Hospital Jefferson, and is a graduate of Other (2017).
NPPES Registry Identity
Specialties & Licenses 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. Sirivan Suon Seng 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 Reassignment
Medicare enrollment records show Sirivan Seng reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Washington, MO 63090
- Reassigned Medicare billing, Missouri enrollment
- 168 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.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mercy Hospital Jefferson
Acute Care Hospitals · Festus, MOMercy Hospital South
Acute Care Hospitals · Saint Louis, MOOther Providers at the Same Location NPPES 19
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SAINT LOUIS, MO 63128
SAINT LOUIS, MO 63128
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 Sirivan Seng's NPI number?
The NPI number for Sirivan Seng is 1487184859. It was assigned to this individual provider in the NPPES registry on June 18, 2017.
Where is Sirivan Seng located?
Sirivan Seng practices at 10012 Kennerly Rd Ste 406, Saint Louis, MO 63128. The listed phone number is (314) 525-1224.
What is Sirivan Seng's specialty?
The primary specialty registered for this NPI is Surgery, specializing in Surgical Critical Care, with taxonomy code 2086S0102X.
Is Sirivan Seng enrolled in Medicare?
Yes. Sirivan Seng 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 organization bills Medicare for Sirivan Seng's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Sirivan Seng reassigns Medicare benefits to Mercy Clinic Surgical Specialists, LLC (Washington, MO). The 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 Sirivan Seng's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Sirivan Seng 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 Sirivan Seng 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 Sirivan Seng affiliated with any hospitals?
According to CMS data, Sirivan Seng is affiliated with Mercy Hospital Jefferson and Mercy Hospital South.
When was this NPI record last updated?
The NPPES record for Sirivan Seng was last updated on July 17, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months 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. Sirivan Suon Seng, M.D. · NPI 1487184859
Surgical Critical Care physician in Saint Louis, Missouri. Individual provider, active in the CMS NPPES registry since June 18, 2017.
## Identity
- **NPI:** 1487184859 (Entity type: Individual)
- **Enumerated:** June 18, 2017
- **Primary specialty:** Surgery - Surgical Critical Care · taxonomy 2086S0102X
- **State license:** 2025017589 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 10012 KENNERLY RD STE 406, Saint Louis, MO 63128-2197
- **Phone:** (314) 525-1224
## 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:** Mercy Clinic Surgical Specialists, LLC (NPI 1043530538, Washington, MO), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2017
## Record status
- **NPPES last updated:** July 17, 2026
---
Source: [NPI Profile](https://npiprofile.com/npi/1487184859) · Data from the CMS NPPES public registry.