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LEAH B. GILLIAM, MD.
NPI 1215411624
Family Medicine in Lexington, TN

Active since September 20, 2018CLIA 44D2154754 · Microscopy
83 S MAIN ST, LEXINGTON, TN 38351(731) 614-7957 Get Directions Write a Review

NPPES record last updated: November 15, 2018. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Nov 15, 2018, Sep 20, 2018 (2 updates tracked since 2018).

About Leah B. Gilliam, Md. NPPES

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

LEAH B. GILLIAM, MD. (NPI 1215411624) is a healthcare organization registered as a family medicine in Lexington, Tennessee and active in the NPI registry since September 2018. The organization holds a CLIA Microscopy certificate valid through September 17, 2028 and lists Leah Gilliam, Physician, as its authorized official.

NPPES Registry Identity

NPI1215411624
Entity TypeOrganization
Primary Taxonomy207Q00000X
Legal Business NameLEAH B. GILLIAM, MD.
Location Address83 S MAIN STLexington, TN 38351-2109
Mailing Address83 S Main StLexington, TN 38351-2109
Phone(731) 614-7957
Organization SubpartNo
Authorized OfficialLeah GilliamPhysician · (731) 614-7957
Enumeration DateSeptember 20, 2018
Last NPPES UpdateNovember 15, 20182 updates tracked since enumeration
✔ NPI 1215411624 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
83 S MAIN ST, Lexington, TN 38351
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Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Leah B. Gilliam, Md. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Leah B. Gilliam, MD., which bills Medicare for the services this clinician delivers.

Clinician (1)

Leah Gilliam, MD
Family Practice
NPI 1891037875
83 S MAIN ST
Lexington, TN 38351
(731) 614-7957
✔ PECOSSame 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) 44D2154754

Leah B Gilliam, MD · Lexington, TN
Active · expires Sep 17, 2028
CLIA Number44D2154754
Laboratory TypePhysician Office
Certificate Effective DateSeptember 18, 2026
Certificate Expiration DateSeptember 17, 2028
Laboratory DirectorDr. Leah B. Gilliam
Laboratory Phone(731) 614-7957
Laboratory LocationLeah B Gilliam, MD83 S Main Street, Lexington, TN 38351
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 Leah B. Gilliam, MD.'s NPI number?

The NPI number for Leah B. Gilliam, MD. is 1215411624. It was assigned to this organization in the NPPES registry on September 20, 2018.

Where is Leah B. Gilliam, MD. located?

Leah B. Gilliam, MD. is located at 83 S Main St, Lexington, TN 38351. The listed phone number is (731) 614-7957.

What is Leah B. Gilliam, MD.'s specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Leah B. Gilliam, MD. enrolled in Medicare?

Yes. Leah B. Gilliam, MD. is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Leah B. Gilliam, MD.?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Family Practice) reassigns their Medicare billing to Leah B. Gilliam, MD.. 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. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Leah B. Gilliam, MD. hold a CLIA laboratory certificate?

Yes. A Certificate for Provider-Performed Microscopy Procedures (PPMP) (number 44D2154754) is associated with this NPI, valid through September 17, 2028. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Leah B. Gilliam, MD. was last updated on November 15, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.