DR. MASON EDWARD GENTNER MD
NPI 1508450602
Emergency Medicine in Saint Louis, MO
About Dr. Mason Edward Gentner Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MASON EDWARD GENTNER MD (NPI 1508450602) is an individual emergency medicine provider in Saint Louis, Missouri, licensed in Missouri (2026039078) and active in the NPI registry since March 2021. He is enrolled in Medicare PECOS and maintains a secondary practice location in Scott Afb.
NPPES Registry Identity
Specialties & Licenses 3
Secondary Practice Location 1
Other Identifiers 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Mason Edward Gentner Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Mason Gentner reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
East Liverpool, OH 43920
- Reassigned Medicare billing, Pennsylvania enrollment
- 7,114 clinicians in this Medicare group
Washington, PA 15301
- Reassigned Medicare billing, Pennsylvania enrollment
- 1,182 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 63110 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SAINT LOUIS, MO 63110
SAINT LOUIS, MO 63110
SAINT LOUIS, MO 63110
SAINT LOUIS, MO 63110
SAINT LOUIS, MO 63110
SAINT LOUIS, MO 63110
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 Mason Gentner's NPI number?
The NPI number for Mason Gentner is 1508450602. It was assigned to this individual provider in the NPPES registry on March 1, 2021.
Where is Mason Gentner located?
Mason Gentner practices at 1 Barnes Jewish Hospital Plz, Saint Louis, MO 63110. The listed phone number is (314) 747-3000.
What is Mason Gentner's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Mason Gentner enrolled in Medicare?
Yes. Mason Gentner is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Mason Gentner's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mason Gentner reassigns Medicare benefits to 2 organizations: University Of Pittsburgh Physicians (East Liverpool, OH) and Upmc Community Medicine Inc (Washington, PA). 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 Mason Gentner's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Mason Gentner was last updated on October 6, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 30 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. Mason Edward Gentner, MD · NPI 1508450602
Emergency Medicine physician in Saint Louis, Missouri. Individual provider, active in the CMS NPPES registry since March 1, 2021.
## Identity
- **NPI:** 1508450602 (Entity type: Individual)
- **Enumerated:** March 1, 2021
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 2026039078 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 1 BARNES JEWISH HOSPITAL PLZ, Saint Louis, MO 63110-1003
- **Phone:** (314) 747-3000
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **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): University Of Pittsburgh Physicians (NPI 1811945793, East Liverpool, OH); Upmc Community Medicine Inc (NPI 1821332792, Washington, PA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** October 6, 2026
- **Other identifiers:** Other 01089088A (IN)
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Source: [NPI Profile](https://npiprofile.com/npi/1508450602) · Data from the CMS NPPES public registry.