DR. HEI JUN LI MD
NPI 1295319408
Internal Medicine in Saint Louis, MO
About Dr. Hei Jun Li Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. HEI JUN LI MD (NPI 1295319408) is an individual internal medicine provider in Saint Louis, Missouri, licensed in Missouri (2024024274) and active in the NPI registry since May 2021. He is enrolled in Medicare PECOS, is affiliated with Mercy Hospital St Louis, and maintains a secondary practice location in Saint Louis.
NPPES Registry Identity
Specialties & Licenses 2
Other Names 1
Secondary Practice Location 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. Hei Jun Li 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 Hei Jun Li 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 63128
- Reassigned Medicare billing, Missouri enrollment
- 228 clinicians in this Medicare group
Saint Louis, MO 63141
- Reassigned Medicare billing, Missouri enrollment
- 611 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
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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mercy Hospital St Louis
Acute Care Hospitals · Saint Louis, MOMercy Hospital South
Acute Care Hospitals · Saint Louis, MOPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 63126 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 8
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Hei Jun Li's NPI number?
The NPI number for Hei Jun Li is 1295319408. It was assigned to this individual provider in the NPPES registry on May 12, 2021. The provider is also known as Dr. Jason Li MD.
Where is Hei Jun Li located?
Hei Jun Li practices at 10024 Watson Rd, Saint Louis, MO 63126. The listed phone number is (314) 919-2500.
What is Hei Jun Li's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Hei Jun Li enrolled in Medicare?
Yes. Hei Jun Li 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 Hei Jun Li's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Hei Jun Li reassigns Medicare benefits to 2 organizations: Mercy Clinic East Communities (Saint Louis, MO) and Physician Groups Lc (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 Hei Jun Li's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Hei Jun Li 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 2 other insurers list Hei Jun Li 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 Hei Jun Li affiliated with any hospitals?
According to CMS data, Hei Jun Li is affiliated with Mercy Hospital St Louis and Mercy Hospital South.
When was this NPI record last updated?
The NPPES record for Hei Jun Li was last updated on December 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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. Hei Jun Li, MD · NPI 1295319408
Internal Medicine physician in Saint Louis, Missouri. Individual provider, active in the CMS NPPES registry since May 12, 2021.
## Identity
- **NPI:** 1295319408 (Entity type: Individual)
- **Enumerated:** May 12, 2021
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 2024024274 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 10024 WATSON RD, Saint Louis, MO 63126-1829
- **Phone:** (314) 919-2500
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Mercy Clinic East Communities (NPI 1720635329, Saint Louis, MO); Physician Groups Lc (NPI 1285664268, Saint Louis, MO) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Georgetown University School Of Medicine, class of 2024
## Record status
- **NPPES last updated:** December 11, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1295319408) · Data from the CMS NPPES public registry.