Individual provider Active NPI

Leslie Hamm Sivley, CRNA

  • Certified Registered Nurse Anesthetist
  • Oxford, MS
National Provider Identifier
1578231593
Registry record updated Jun 9, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Certified Registered Nurse AnesthetistTaxonomy code 367500000X
License
901733 Issued in MS
Practice address
1100 Belk Blvd
Oxford, MS 38655-5242
Phone
(662) 636-1000
NPI assigned
Sep 3, 2021
Last updated
Jun 9, 2026By the provider in NPPES
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jun 9, 2026

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Certified Registered Nurse Anesthetist 367500000X 901733 MS Primary

Addresses

Primary practice location

1100 Belk Blvd
Oxford, MS 38655-5242

Mailing address

3001 Old Taylor Rd Unit 403
Oxford, MS 38655-5638
Phone (662) 397-2829

Other practice location 1

1208 Office Park Dr
Oxford, MS 38655-3597
Phone (662) 234-9888

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in MS

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20210923002861 MS Practitioner - Certified Registered Nurse Anesthetist (Crna) 8921405580 Reassigns benefits to 5 organizations

Care Compare profile

Medicare Care Compare
Specialty
Certified Registered Nurse Anesthetist (Crna)
Education
Other, 2021
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Lifelinc Anesthesia PLLCGroup PAC ID 0941347447, 169 clinicians
Tupelo Anesthesia Group, PAGroup PAC ID 4587566344, 32 clinicians
Willow Anesthesia Services LLCGroup PAC ID 9234279183, 52 clinicians

Practice addresses (Care Compare)

1100 Belk Blvd
Oxford, MS 38655-5242
Phone (662) 232-8100

723 Concordia Ave
Suite 201
Oxford, MS 38655-1991
Phone (662) 377-4394

830 S Gloster
North Ms Med Ctr Sleep Lab
Tupelo, MS 38801-4934
Phone (662) 377-3258

830 S Gloster St
Tupelo, MS 38801-4934

830 S Gloster St 3Rd FL E Tower
Tupelo, MS 38801-4934

960 Avent Dr
Grenada, MS 38901-5230
Phone (662) 227-7000

Hospital & facility affiliations

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Certified Registered Nurse

Practice roles

OrganizationSpecialtyStatusNew patients
Willow Anesthesia Services LLC Nurse Anesthetist, Certified Registered CurrentSince Feb 1, 2024 Accepting new patients
Tupelo Anesthesia Group PA CurrentSince Aug 11, 2025 Accepting new patients
North Mississippi Medical Center CurrentSince Jan 6, 2025 Accepting new patients
Lifelinc Anesthesia, PLLC Nurse Anesthetist, Certified Registered CurrentSince Oct 1, 2021 Accepting new patients
North Mississippi Medcial Center, Inc. CurrentSince Jan 6, 2025 Accepting new patients
North Mississippi Medical Center Inc Current Accepting new patients

Locations

634 Leigh Dr
Columbus, MS 39705
Phone (601) 978-3393

960 Avent Dr
Grenada, MS 38901
Phone (662) 227-7000

1100 Belk Blvd
Oxford, MS 38655
Phone (662) 636-1000

499 Azalea Dr
Oxford, MS 38655
Phone (662) 234-7979

723 Concordia Ave
Ste 201
Oxford, MS 38655
Phone (662) 432-1490

589 Garfield St
Ste 201
Tupelo, MS 38801
Phone (662) 680-5565

830 S Gloster St
Tupelo, MS 38801
Phone (662) 377-3136

Organizations & group practices 7

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

Hospital & facility affiliations 2

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1630627200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1780963200000",
    "number": "1578231593",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3001 OLD TAYLOR RD UNIT 403",
            "city": "OXFORD",
            "state": "MS",
            "postal_code": "386555638",
            "telephone_number": "662-397-2829"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1100 BELK BLVD",
            "city": "OXFORD",
            "state": "MS",
            "postal_code": "386555242",
            "telephone_number": "662-636-1000"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1208 Office Park Dr",
            "address_purpose": "LOCATION",
            "city": "Oxford",
            "state": "MS",
            "postal_code": "386553597",
            "country_code": "US",
            "telephone_number": "662-234-9888",
            "fax_number": "662-281-8927",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "SIVLEY",
        "first_name": "LESLIE",
        "middle_name": "HAMM",
        "credential": "CRNA",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2021-09-03",
        "last_updated": "2026-06-09",
        "certification_date": "2026-06-09",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "367500000X",
            "taxonomy_group": "",
            "desc": "Nurse Anesthetist, Certified Registered",
            "state": "MS",
            "license": "901733",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Oxford, MS

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 9, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
  • Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.