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LIONEL GUILLAUME M.D.
NPI 1619946001
Specialist in Bossier City, LA

Active since March 16, 2006PECOS EnrolledAccepts Medicare Assignment
3018 OLD MINDEN RD, SUITE 1212, BOSSIER CITY, LA 71112(318) 747-1665(318) 747-1597 Get Directions Write a Review

NPPES record last updated: September 17, 2021. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Sep 17, 2021, Oct 24, 2016 (2 updates tracked since 2016).

About Lionel Guillaume M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

LIONEL GUILLAUME M.D. (NPI 1619946001) is an individual specialist in Bossier City, Louisiana, licensed in Louisiana (017032) and active in the NPI registry since March 2006. He is enrolled in Medicare PECOS, is affiliated with Willis Knighton Medical Center, and is a graduate of Other (1978).

NPPES Registry Identity

NPI1619946001
Entity TypeIndividualMale
Primary Taxonomy174400000X
Provider Legal NameLIONEL GUILLAUMECredential: M.D.
Location Address3018 OLD MINDEN RD, SUITE 1212Bossier City, LA 71112-2495
Mailing Address3018 Old Minden Rd, Suite 1212Bossier City, LA 71112-2476 · (318) 747-1665 · Fax (318) 747-1597
Phone(318) 747-1665
Fax(318) 747-1597
Sole ProprietorYes
Medical School CMSOtherGraduated 1978
Enumeration DateMarch 16, 2006
Last NPPES UpdateSeptember 17, 20212 updates tracked since enumeration
NPPES CertifiedSeptember 17, 2021
✔ NPI 1619946001 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtySpecialistOther Service Providers
Taxonomy Code174400000X
License✔ Licensed in LA · 017032
Definition
An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.
Also ListedPsychiatry & Neurology · PsychiatryTaxonomy 2084P0800X · License 017032 (LA)
3018 OLD MINDEN RD, Bossier City, LA 71112
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Other Identifiers 1

Medicaid1343765LA

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Louisiana, HMO Louisiana.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

Lionel Guillaume M.d. 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.

PECOS PAC ID8628056157
PECOS Enrollment IDI20051003000327
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Lionel Guillaume reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Northeast Delta Human Services Authority
62 mi
Mental Health (Including Community Mental Health Center)
901 WHITE ST
Ruston, LA 71270
  • Reassigned Medicare billing, Louisiana enrollment
  • 29 clinicians in this Medicare group
NPI 1033541230 (318) 251-4125

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 4

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.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
353 services80 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
141 services16 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
44 services17 patients
Psychiatric diagnostic evaluation with medical services 90792
A psychiatric diagnostic evaluation with medical services is a comprehensive assessment. It includes a detailed examination of your mental health and physical wellbeing, as well as your personal and family history. This evaluation aids in creating an effective treatment plan.
17 services17 patients

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Willis Knighton Medical Center

Acute Care Hospitals · Shreveport, LA
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number190111
Location2600 Greenwood RoadShreveport, LA 71103 · Caddo County
Emergency services Birthing friendly

Bienville Medical Center

Critical Access Hospitals · Arcadia, LA
OwnershipProprietary
CMS Certification Number191320
Location1175 Pine StreetArcadia, LA 71001 · Bienville County
Emergency services

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.

UNLIMITED ALTERNATIVES TO CHANGE, LLC
Clinic/Center (Mental Health (Including Community Mental Health Center))
3018 OLD MINDEN RD, STE 1117
BOSSIER CITY, LA 71112
Bossier Parish (318) 746-1935
MS. DEBRA ANN BROGDEN LCSW
Social Worker (Clinical)
3018 OLD MINDEN RD, SUITE 1111
BOSSIER CITY, LA 71112
Bossier Parish (318) 741-7482
BOSSIER CITY CHIROPRACTIC CENTER
Chiropractor
3018 OLD MINDEN RD, SUITE #1203
BOSSIER CITY, LA 71112
Bossier Parish (318) 747-5855
VICTORIA BENDER
Counselor (Mental Health)
3018 OLD MINDEN RD
BOSSIER CITY, LA 71112
Bossier Parish (318) 658-9927
LYNNETTE JONES
Case Manager/Care Coordinator
3018 OLD MINDEN RD
BOSSIER CITY, LA 71112
Bossier Parish (318) 658-9927
DR. JAMES ALLEN WISEMAN D.C.
Chiropractor
3018 OLD MINDEN RD, SUITE 1203
BOSSIER CITY, LA 71112
Bossier Parish (318) 747-5855
MARVETTE JONES
Counselor (Mental Health)
3018 OLD MINDEN RD
BOSSIER CITY, LA 71112
Bossier Parish (318) 658-9927
JENNY HANSON
Case Manager/Care Coordinator
3018 OLD MINDEN RD, SUITE 1200
BOSSIER CITY, LA 71112
Bossier Parish (318) 658-9927

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 Lionel Guillaume's NPI number?

The NPI number for Lionel Guillaume is 1619946001. It was assigned to this individual provider in the NPPES registry on March 16, 2006.

Where is Lionel Guillaume located?

Lionel Guillaume practices at 3018 Old Minden Rd Suite 1212, Bossier City, LA 71112. The listed phone number is (318) 747-1665.

What is Lionel Guillaume's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

Is Lionel Guillaume enrolled in Medicare?

Yes. Lionel Guillaume 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 organization bills Medicare for Lionel Guillaume's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Lionel Guillaume reassigns Medicare benefits to Northeast Delta Human Services Authority (Ruston, LA). The 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 Lionel Guillaume's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Lionel Guillaume accept?

Health plans from Blue Cross and Blue Shield of Louisiana and HMO Louisiana list Lionel Guillaume 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 Lionel Guillaume affiliated with any hospitals?

According to CMS data, Lionel Guillaume is affiliated with Willis Knighton Medical Center and Bienville Medical Center.

When was this NPI record last updated?

The NPPES record for Lionel Guillaume was last updated on September 17, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.