JOHN BRIAN SEYMOUR MD
NPI 1255592788
Emergency Medicine in Slidell, LA
About John Brian Seymour Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHN BRIAN SEYMOUR MD (NPI 1255592788) is an individual emergency medicine provider in Slidell, Louisiana, licensed in Louisiana (MD.204711) and active in the NPI registry since June 2008. He is enrolled in Medicare PECOS, is affiliated with St Charles Parish Hospital, and is a graduate of Louisiana State University School Of Medicine In Shreveport (2008).
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 3
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
John Brian Seymour 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
9Medicare enrollment records show John Seymour reassigns Medicare billing to 9 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Slidell, LA 70461
- Reassigned Medicare billing, Louisiana enrollment
- 4,559 clinicians in this Medicare group
New Orleans, LA 70115
- Reassigned Medicare billing, Louisiana enrollment
- 240 clinicians in this Medicare group
Kenner, LA 70065
- Reassigned Medicare billing, Louisiana enrollment
- 181 clinicians in this Medicare group
Luling, LA 70070
- Reassigned Medicare billing, Louisiana enrollment
- 114 clinicians in this Medicare group
La Place, LA 70068
- Reassigned Medicare billing, Louisiana enrollment
- 120 clinicians in this Medicare group
Raceland, LA 70394
- Reassigned Medicare billing, Louisiana enrollment
- 32 clinicians in this Medicare group
Houma, LA 70363
- Reassigned Medicare billing, Louisiana enrollment
- 189 clinicians in this Medicare group
Columbia, LA 71418
- Reassigned Medicare billing, Louisiana enrollment
- 44 clinicians in this Medicare group
Lufkin, TX 75904
- Reassigned Medicare billing, Louisiana enrollment
- 101 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 3
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 Charles Parish Hospital
Acute Care Hospitals · Luling, LALeonard J Chabert Medical Center
Acute Care Hospitals · Houma, LACitizens Medical Center
Acute Care Hospitals · Columbia, LAOchsner Medical Center-Kenner
Acute Care Hospitals · Kenner, LAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 70461 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 19
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SLIDELL, LA 70461
SLIDELL, LA 70461
SLIDELL, LA 70461
SLIDELL, LA 70461
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 John Seymour's NPI number?
The NPI number for John Seymour is 1255592788. It was assigned to this individual provider in the NPPES registry on June 18, 2008.
Where is John Seymour located?
John Seymour practices at 100 Medical Center Drive, Slidell, LA 70461. The listed phone number is (985) 646-5189.
What is John Seymour's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is John Seymour enrolled in Medicare?
Yes. John Seymour 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 John Seymour's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Seymour reassigns Medicare benefits to 9 organizations: Ochsner Clinic LLC (Slidell, LA), Belle Chasse Emergency Group LLC (New Orleans, LA), Kenner Emergency Group LLC (Kenner, LA), Luling Emergency Group LLC (Luling, LA), St. John Emergency Group LLC (La Place, LA) and 4 more organizations, listed in the Medicare section above. 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 John Seymour's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does John Seymour accept?
Health plans from CHRISTUS Health Plan, HMO Louisiana and UnitedHealthcare list John Seymour 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 John Seymour affiliated with any hospitals?
According to CMS data, John Seymour is affiliated with St Charles Parish Hospital, Leonard J Chabert Medical Center, Citizens Medical Center and Ochsner Medical Center-Kenner.
When was this NPI record last updated?
The NPPES record for John Seymour was last updated on November 3, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.
# John Brian Seymour, MD · NPI 1255592788
Emergency Medicine physician in Slidell, Louisiana. Individual provider, active in the CMS NPPES registry since June 18, 2008.
## Identity
- **NPI:** 1255592788 (Entity type: Individual)
- **Enumerated:** June 18, 2008
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** MD.204711 (Louisiana)
- **Sole proprietor:** No
## Practice location
- **Address:** 100 MEDICAL CENTER DRIVE, Slidell, LA 70461-5520
- **Phone:** (985) 646-5189 · **Fax:** (919) 966-0290
## 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:** 9 organizations under Medicare reassignment (form CMS-855R): Ochsner Clinic LLC (NPI 1407314248, Slidell, LA); Belle Chasse Emergency Group LLC (NPI 1851714075, New Orleans, LA); Kenner Emergency Group LLC (NPI 1013986546, Kenner, LA); Luling Emergency Group LLC (NPI 1528446101, Luling, LA); St. John Emergency Group LLC (NPI 1265401509, La Place, LA); and 4 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Louisiana State University School Of Medicine In Shreveport, class of 2008
## Record status
- **NPPES last updated:** November 3, 2011
- **Other identifiers:** Medicaid 02672211 (MS); Medicare PIN 4Q3477061 (LA); Medicaid 2153501 (LA)
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Source: [NPI Profile](https://npiprofile.com/npi/1255592788) · Data from the CMS NPPES public registry.