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DR. LESLIE-ANN WILLIAMS M.D.
NPI 1346454964
Internal Medicine in St Thomas, VI

Active since May 10, 2007PECOS Enrolled
9151 ESTATE THOMAS 104, ST THOMAS, VI 00802(340) 777-2273(340) 777-2283 Get Directions Write a Review

NPPES record last updated: December 20, 2021. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. Leslie-ann Williams M.d. NPPES

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

DR. LESLIE-ANN WILLIAMS M.D. (NPI 1346454964) is an individual internal medicine provider in St Thomas, Virgin Islands, licensed in Virgin Islands (1966) and active in the NPI registry since May 2007. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1346454964
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameDR. LESLIE-ANN WILLIAMSCredential: M.D.
Location Address9151 ESTATE THOMAS 104St Thomas, VI 00802-2711
Mailing AddressPo Box 997St. Thomas, VI 00804 · (888) 502-4443 · Fax (340) 777-2283
Phone(340) 777-2273
Fax(340) 777-2283
Sole ProprietorYes
Enumeration DateMay 10, 2007
Last NPPES UpdateDecember 20, 2021
NPPES CertifiedDecember 20, 2021
✔ NPI 1346454964 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 VI · 1966
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 1966 (VI)

Other Names 1

Former Name (1)Dr. Leslie-ann Lemessy M.d.

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Leslie-ann Williams M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 Leslie-ann Williams reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Southeastern Physician Services PC
Hospitalist
990 OAK RIDGE TPKE
Oak Ridge, TN 37830
  • Reassigned Medicare billing, Kentucky enrollment
  • 358 clinicians in this Medicare group
NPI 1083835441 (865) 481-1000

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 00802 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$130.65 typical visit price
range $56.86 – $172.44
Typical copayment $32.66 (range $14.21 – $43.11)
Most-billed visit code 99204
Established Patient
$100.24 typical visit price
range $18.24 – $140.44
Typical copayment $25.06 (range $4.56 – $35.11)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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 Leslie-ann Williams's NPI number?

The NPI number for Leslie-ann Williams is 1346454964. It was assigned to this individual provider in the NPPES registry on May 10, 2007. The provider is also known as Dr. Leslie-Ann Lemessy M.D..

Where is Leslie-ann Williams located?

Leslie-ann Williams practices at 9151 Estate Thomas 104, St Thomas, VI 00802. The listed phone number is (340) 777-2273.

What is Leslie-ann Williams's specialty?

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

Is Leslie-ann Williams enrolled in Medicare?

Yes. Leslie-ann Williams is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Leslie-ann Williams's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Leslie-ann Williams reassigns Medicare benefits to Southeastern Physician Services PC (Oak Ridge, TN). 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 Leslie-ann Williams's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Leslie-ann Williams was last updated on December 20, 2021. 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.