DR. JONATHON CASEY CHAPMAN MD
NPI 1689867434
Internal Medicine - Gastroenterology in Baton Rouge, LA
About Dr. Jonathon Casey Chapman Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JONATHON CASEY CHAPMAN MD (NPI 1689867434) is an individual gastroenterology provider in Baton Rouge, Louisiana, licensed in Louisiana (MD 201621) and active in the NPI registry since August 2007. He is enrolled in Medicare PECOS, is affiliated with Baton Rouge General Medical Center, and is a graduate of Louisiana State University School Of Medicine In New Orleans (2006).
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. Jonathon Casey Chapman 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
3Medicare enrollment records show Jonathon Chapman reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Baton Rouge, LA 70808
- Reassigned Medicare billing, Louisiana enrollment
- 548 clinicians in this Medicare group
Baton Rouge, LA 70809
- Reassigned Medicare billing, Louisiana enrollment
- 120 clinicians in this Medicare group
Thibodaux, LA 70301
- Reassigned Medicare billing, Louisiana enrollment
- 92 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.
Baton Rouge General Medical Center
Acute Care Hospitals · Baton Rouge, LAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 70809 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.
BATON ROUGE, LA 70809
BATON ROUGE, LA 70809
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 Jonathon Chapman's NPI number?
The NPI number for Jonathon Chapman is 1689867434. It was assigned to this individual provider in the NPPES registry on August 24, 2007.
Where is Jonathon Chapman located?
Jonathon Chapman practices at 9103 Jefferson Hwy, Baton Rouge, LA 70809. The listed phone number is (225) 927-1190.
What is Jonathon Chapman's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.
Is Jonathon Chapman enrolled in Medicare?
Yes. Jonathon Chapman 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 Jonathon Chapman's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Jonathon Chapman reassigns Medicare benefits to 3 organizations: Lsuhn Billing LLC (Baton Rouge, LA), Baton Rouge General Medical Center (Baton Rouge, LA) and Texas Digestive Disease Consultants, PLLC (Thibodaux, LA). 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 Jonathon Chapman's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Jonathon Chapman accept?
Health plans from Ambetter Health, Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections and Ambetter from Superior HealthPlan and 3 other insurers list Jonathon Chapman 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 Jonathon Chapman affiliated with any hospitals?
According to CMS data, Jonathon Chapman is affiliated with Baton Rouge General Medical Center.
When was this NPI record last updated?
The NPPES record for Jonathon Chapman was last updated on November 9, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.
# Dr. Jonathon Casey Chapman, MD · NPI 1689867434
Gastroenterology physician in Baton Rouge, Louisiana. Individual provider, active in the CMS NPPES registry since August 24, 2007.
## Identity
- **NPI:** 1689867434 (Entity type: Individual)
- **Enumerated:** August 24, 2007
- **Primary specialty:** Internal Medicine - Gastroenterology · taxonomy 207RG0100X
- **State license:** MD 201621 (Louisiana)
- **Sole proprietor:** No
## Practice location
- **Address:** 9103 JEFFERSON HWY, Baton Rouge, LA 70809-2440
- **Phone:** (225) 927-1190 · **Fax:** (225) 706-0160
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Lsuhn Billing LLC (NPI 1306247556, Baton Rouge, LA); Baton Rouge General Medical Center (NPI 1407346984, Baton Rouge, LA); Texas Digestive Disease Consultants, PLLC (NPI 1154837391, Thibodaux, LA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Louisiana State University School Of Medicine In New Orleans, class of 2006
## Record status
- **NPPES last updated:** November 9, 2014
- **Other identifiers:** Medicaid 1500534 (LA)
---
Source: [NPI Profile](https://npiprofile.com/npi/1689867434) · Data from the CMS NPPES public registry.