BARNUM INTERNAL MEDICINE
NPI 1316437643
Internal Medicine in Natchitoches, LA
About Barnum Internal Medicine NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
BARNUM INTERNAL MEDICINE (NPI 1316437643) is a healthcare organization registered as an internal medicine in Natchitoches, Louisiana and active in the NPI registry since May 2018. The organization holds a CLIA Waiver certificate valid through November 1, 2027 and lists Otis Barnum, Owner/md, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Group Practice 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Barnum Internal Medicine is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
2Medicare enrollment records show 2 clinicians reassign Medicare billing to Barnum Internal Medicine, which bills Medicare for the services they deliver. Of these, 2 practice within 10 miles. They are listed nearest first.
Clinicians, nearest first (2)
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
CLIA Laboratory Certificates CMS CLIA
Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.
Certificate of Waiver 19D0908266
Barnum Internal Medicine, LLC · Natchitoches, LAFrequently 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 Barnum Internal Medicine's NPI number?
The NPI number for Barnum Internal Medicine is 1316437643. It was assigned to this organization in the NPPES registry on May 11, 2018.
Where is Barnum Internal Medicine located?
Barnum Internal Medicine is located at 1029 Keyser Ave Ste H, Natchitoches, LA 71457. The listed phone number is (318) 238-9880.
What is Barnum Internal Medicine's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Barnum Internal Medicine enrolled in Medicare?
Yes. Barnum Internal Medicine is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Barnum Internal Medicine?
According to the CMS Revalidation Reassignment List (October 2026 release), 2 clinicians reassign their Medicare billing to Barnum Internal Medicine, in Internal Medicine and Nurse Practitioner. A 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 the clinician's services. Of these, 2 practice within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Does Barnum Internal Medicine hold a CLIA laboratory certificate?
Yes. A Certificate of Waiver (number 19D0908266) is associated with this NPI, valid through November 1, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.
What insurance does Barnum Internal Medicine accept?
Health plans from Blue Cross and Blue Shield of Louisiana and HMO Louisiana list Barnum Internal Medicine 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.
When was this NPI record last updated?
The NPPES record for Barnum Internal Medicine was last updated on May 11, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.
# Barnum Internal Medicine · NPI 1316437643
Internal Medicine organization in Natchitoches, Louisiana. Organization record, active in the CMS NPPES registry since May 11, 2018.
## Identity
- **NPI:** 1316437643 (Entity type: Organization)
- **Enumerated:** May 11, 2018
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **Organization subpart:** No
- **Authorized official:** Otis Barnum, OWNER/MD
## Practice location
- **Address:** 1029 KEYSER AVE STE H, Natchitoches, LA 71457-6215
- **Phone:** (318) 238-9880
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 2 clinicians in 2 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Internal Medicine (1), Nurse Practitioner (1); 2 practice within 10 miles · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** May 11, 2018
- **CLIA laboratory certificates:** 1 on file
---
Source: [NPI Profile](https://npiprofile.com/npi/1316437643) · Data from the CMS NPPES public registry.