GERARD K. WILLIAMS MD APMC
NPI 1932230091
Internal Medicine in Lafayette, LA

Active since March 08, 2007
901 W GLORIA SWITCH RD, LAFAYETTE, LA 70507(337) 886-0023(337) 886-0067 Get Directions Write a Review

NPPES record last updated: November 22, 2023. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Gerard K. Williams Md Apmc NPPES

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

GERARD K. WILLIAMS MD APMC (NPI 1932230091) is a healthcare organization registered as an internal medicine in Lafayette, Louisiana and active in the NPI registry since March 2007. The organization lists Pat L Williams, Office Mgr, as its authorized official.

NPPES Registry Identity

NPI1932230091
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameGERARD K. WILLIAMS MD APMC
Location Address901 W GLORIA SWITCH RDLafayette, LA 70507-2309
Mailing Address901 W Gloria Switch RdLafayette, LA 70507-2309 · (337) 886-0023 · Fax (337) 886-0067
Fax(337) 886-0067
Organization SubpartNo
Authorized OfficialPat L WilliamsOffice Mgr · (337) 886-0023
Enumeration DateMarch 8, 2007
Last NPPES UpdateNovember 22, 2023
NPPES CertifiedNovember 22, 2023
✔ NPI 1932230091 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in LA · 13692R
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Also ListedPediatricsTaxonomy 208000000X · License 13692R (LA)
901 W GLORIA SWITCH RD, Lafayette, LA 70507

Other Identifiers 1

Medicaid1458244LA

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

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)

Gerard K. Williams Md Apmc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

2

Medicare enrollment records show 2 clinicians reassign Medicare billing to Gerard K. Williams MD Apmc, which bills Medicare for the services they deliver. Of these, 2 practice at this address. They are listed nearest first.

Clinicians, nearest first (2)

Nurse Practitioner
NPI 1649586173
901 W GLORIA SWITCH RD
Lafayette, LA 70507
(337) 886-0023
✔ PECOS✔ Accepts MedicareSame address
Internal Medicine
NPI 1295728749
901 W GLORIA SWITCH RD
Lafayette, LA 70507
(337) 886-0023
✔ PECOS✔ Accepts MedicareSame address

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 for Provider-Performed Microscopy Procedures (PPMP) 19D0978900

Gerard K Williams, MD, Apmc · Lafayette, LA
Expired · Oct 5, 2026
CLIA Number19D0978900
Laboratory TypePhysician Office
Certificate Effective DateOctober 6, 2024
Certificate Expiration DateOctober 5, 2026
Laboratory DirectorGerard K. Williams, MD
Laboratory Phone(337) 886-0023
Laboratory LocationGerard K Williams, MD, Apmc901 W Gloria Switch Road, Lafayette, LA 70507
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.

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 Gerard K. Williams MD Apmc's NPI number?

The NPI number for Gerard K. Williams MD Apmc is 1932230091. It was assigned to this organization in the NPPES registry on March 8, 2007.

Where is Gerard K. Williams MD Apmc located?

Gerard K. Williams MD Apmc is located at 901 W Gloria Switch Rd, Lafayette, LA 70507. The listed phone number is (337) 886-0023.

What is Gerard K. Williams MD Apmc's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Gerard K. Williams MD Apmc enrolled in Medicare?

Yes. Gerard K. Williams MD Apmc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Gerard K. Williams MD Apmc?

According to the CMS Revalidation Reassignment List (October 2026 release), 2 clinicians reassign their Medicare billing to Gerard K. Williams MD Apmc, 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 at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

What insurance does Gerard K. Williams MD Apmc accept?

Health plans from AmeriHealth Caritas Next, Blue Cross and Blue Shield of Louisiana and HMO Louisiana list Gerard K. Williams MD Apmc 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 Gerard K. Williams MD Apmc was last updated on November 22, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.