DR. GEORGE S TSENG MD
NPI 1356367585
Anesthesiology - Critical Care Medicine in Saint Louis, MO
About Dr. George S Tseng Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. GEORGE S TSENG MD (NPI 1356367585) is an individual critical care medicine provider in Saint Louis, Missouri, licensed in Missouri (113427) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS, is affiliated with Ssm Health Saint Louis University Hospital, and is a graduate of Boston University School Of Medicine (1992).
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 1
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. George S Tseng Md 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 George Tseng 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 63104
- Reassigned Medicare billing, Missouri enrollment
- 1,294 clinicians in this Medicare group
Saint Louis, MO 63110
- Reassigned Medicare billing, Missouri enrollment
- 142 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 2
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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Ssm Health Saint Louis University Hospital
Acute Care Hospitals · Saint Louis, MOMedicare 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SAINT LOUIS, MO 63104
SAINT LOUIS, MO 63104
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 George Tseng's NPI number?
The NPI number for George Tseng is 1356367585. It was assigned to this individual provider in the NPPES registry on July 14, 2006.
Where is George Tseng located?
George Tseng practices at 1201 S Grand Blvd, Saint Louis, MO 63104. The listed phone number is (314) 577-8000.
What is George Tseng's specialty?
The primary specialty registered for this NPI is Anesthesiology, specializing in Critical Care Medicine, with taxonomy code 207LC0200X.
Is George Tseng enrolled in Medicare?
Yes. George Tseng 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 George Tseng's services?
According to the CMS Revalidation Reassignment List (October 2026 release), George Tseng reassigns Medicare benefits to 2 organizations: Ssm Health Care Group (Saint Louis, MO) and Ssm Health Slu Hospital Anesthesia Physician Billing, LLC (Saint Louis, 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 George Tseng's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does George Tseng accept?
Health plans from Oscar Insurance Company list George Tseng 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 George Tseng affiliated with any hospitals?
According to CMS data, George Tseng is affiliated with Ssm Health Saint Louis University Hospital.
When was this NPI record last updated?
The NPPES record for George Tseng was last updated on September 29, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 38 days 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. George S Tseng, MD · NPI 1356367585
Critical Care Medicine physician in Saint Louis, Missouri. Individual provider, active in the CMS NPPES registry since July 14, 2006.
## Identity
- **NPI:** 1356367585 (Entity type: Individual)
- **Enumerated:** July 14, 2006
- **Primary specialty:** Anesthesiology - Critical Care Medicine · taxonomy 207LC0200X
- **State license:** 113427 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 1201 S GRAND BLVD, Saint Louis, MO 63104-1016
- **Phone:** (314) 577-8000 · **Fax:** (314) 977-1617
## 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): Ssm Health Care Group (NPI 1306589544, Saint Louis, MO); Ssm Health Slu Hospital Anesthesia Physician Billing, LLC (NPI 1407232804, Saint Louis, MO) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Boston University School Of Medicine, class of 1992
## Record status
- **NPPES last updated:** September 29, 2026
- **Other identifiers:** Medicaid 373010174 (MO)
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Source: [NPI Profile](https://npiprofile.com/npi/1356367585) · Data from the CMS NPPES public registry.