DR. ANDRES J GUILLERMO M.D.
NPI 1639379837
Family Medicine in Lake Charles, LA
About Dr. Andres J Guillermo M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ANDRES J GUILLERMO M.D. (NPI 1639379837) is an individual family medicine provider in Lake Charles, Louisiana, licensed in Louisiana (MD.203910) and active in the NPI registry since July 2007. He is enrolled in Medicare PECOS, is affiliated with West Calcasieu Cameron Hospital, and is a graduate of Other (2010).
NPPES Registry Identity
Specialties & Licenses
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 (PECOS)
Dr. Andres J Guillermo M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Andres Guillermo reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Lake Charles, LA 70601
- Reassigned Medicare billing, Louisiana enrollment
- 74 clinicians in this Medicare group
Deridder, LA 70634
- Reassigned Medicare billing, Louisiana enrollment
- 14 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 54
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 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
West Calcasieu Cameron Hospital
Acute Care Hospitals · Sulphur, LAChristus Ochsner St Patrick Hospital
Acute Care Hospitals · Lake Charles, LABeauregard Memorial Hospital
Acute Care Hospitals · Deridder, LALake Charles Memorial Hospital
Acute Care Hospitals · Lake Charles, LAChristus Ochsner Lake Area Hospital
Acute Care Hospitals · Lake Charles, LAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 70601 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 6
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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
LAKE CHARLES, LA 70601
LAKE CHARLES, LA 70601
LAKE CHARLES, LA 70601
LAKE CHARLES, LA 70601
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 Andres Guillermo's NPI number?
The NPI number for Andres Guillermo is 1639379837. It was assigned to this individual provider in the NPPES registry on July 25, 2007.
Where is Andres Guillermo located?
Andres Guillermo practices at 501 Dr Michael Debakey Dr, Lake Charles, LA 70601. The listed phone number is (337) 419-1958.
What is Andres Guillermo's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Andres Guillermo enrolled in Medicare?
Yes. Andres Guillermo is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Andres Guillermo's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Andres Guillermo reassigns Medicare benefits to 2 organizations: Imperial Health, LLP (Lake Charles, LA) and Beauregard Medical And Surgical Center, LLC (Deridder, 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 Andres Guillermo's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Andres Guillermo accept?
Health plans from Ambetter Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter from Superior HealthPlan and Blue Cross and Blue Shield of Louisiana and 3 other insurers list Andres Guillermo 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 Andres Guillermo affiliated with any hospitals?
According to CMS data, Andres Guillermo is affiliated with West Calcasieu Cameron Hospital, Christus Ochsner St Patrick Hospital, Beauregard Memorial Hospital, Lake Charles Memorial Hospital and Christus Ochsner Lake Area Hospital.
When was this NPI record last updated?
The NPPES record for Andres Guillermo was last updated on August 17, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.