ISAAC TRAN M.D.
NPI 1154777597
Hospitalist in O Fallon, IL
About Isaac Tran M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ISAAC TRAN M.D. (NPI 1154777597) is an individual hospitalist provider in O Fallon, Illinois, licensed in Illinois (036150198) and active in the NPI registry since May 2016. He is enrolled in Medicare PECOS, is affiliated with St Josephs Hospital, and maintains a secondary practice location in Saint Louis.
NPPES Registry Identity
Specialties & Licenses 3
Secondary Practice Location 1
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
Isaac Tran 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 Isaac Tran reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Shiloh, IL 62269
- Reassigned Medicare billing, Illinois enrollment
- 329 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 4
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.
St Josephs Hospital
Acute Care Hospitals · Breese, ILHshs St Elizabeth's Hospital
Acute Care Hospitals · O Fallon, ILSt Joseph's Hospital
Critical Access Hospitals · Highland, ILSsm Health Saint Louis University Hospital
Acute Care Hospitals · Saint Louis, MOPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 62269 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
O FALLON, IL 62269
O FALLON, IL 62269
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 Isaac Tran's NPI number?
The NPI number for Isaac Tran is 1154777597. It was assigned to this individual provider in the NPPES registry on May 4, 2016.
Where is Isaac Tran located?
Isaac Tran practices at 1 Saint Elizabeth Blvd, O Fallon, IL 62269. The listed phone number is (618) 234-2120.
What is Isaac Tran's specialty?
The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.
Is Isaac Tran enrolled in Medicare?
Yes. Isaac Tran 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 Isaac Tran's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Isaac Tran reassigns Medicare benefits to Cep America-Illinois Hospitalists, LLP (Shiloh, IL). 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 Isaac Tran's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Isaac Tran affiliated with any hospitals?
According to CMS data, Isaac Tran is affiliated with St Josephs Hospital, Hshs St Elizabeth's Hospital, St Joseph's Hospital and Ssm Health Saint Louis University Hospital.
When was this NPI record last updated?
The NPPES record for Isaac Tran was last updated on September 24, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.
# Isaac Tran, M.D. · NPI 1154777597
Hospitalist physician in O Fallon, Illinois. Individual provider, active in the CMS NPPES registry since May 4, 2016.
## Identity
- **NPI:** 1154777597 (Entity type: Individual)
- **Enumerated:** May 4, 2016
- **Primary specialty:** Hospitalist · taxonomy 208M00000X
- **State license:** 036150198 (Illinois)
- **Sole proprietor:** No
## Practice location
- **Address:** 1 SAINT ELIZABETH BLVD, O Fallon, IL 62269-1099
- **Phone:** (618) 234-2120
## 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:** Cep America-Illinois Hospitalists, LLP (NPI 1619335106, Shiloh, IL), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2016
## Record status
- **NPPES last updated:** September 24, 2019
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Source: [NPI Profile](https://npiprofile.com/npi/1154777597) · Data from the CMS NPPES public registry.