Jon William Mares, D.O.

Primary specialty

Nephrology PhysicianTaxonomy code 207RN0300X

License

036.151545 Issued in IL

Practice address

1970 N Highway 190
Covington, LA 70433-5364

Phone

(985) 867-8585

Fax

(985) 867-3644

NPI assigned

Apr 11, 2012

Last updated

Sep 17, 2025By the provider in NPPES

Sex

Male

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Medicare fee-for-service enrollment

Enrolled in LA, MS2 enrollments

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 2

Specialty

Nephrology

Education

Kansas City University of Physicians and Surgeons, 2012

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Nni Covington LLCGroup PAC ID 7517209364, 6 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• FKC - Tchefuncte River Dialysis facility, Madisonville, LA, CCN 192674
• North Oaks Medical Center Hospital, Hammond, LA, CCN 190015

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Osteopathy

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: jmares32711@direct.acumenmd.com

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.

• JWM Renal, LLC

  • Nephrology Physician
  • Covington, LA
  • NPI 1790665396
  Medicare reassignment NPD Authorized official
• Nni Covington LLC

  • Nephrology Physician
  • Covington, LA
  • NPI 1972060168
  Medicare reassignment Care Compare group NPD
• South Mississippi Nephrology, PLLC

  • Nephrology Physician
  • Gulfport, MS
  • NPI 1134168081
  Medicare reassignment NPD
• Waccamaw Kidney & Hypertension Specialists,P.a.

  • Nephrology Physician
  • Georgetown, SC
  • NPI 1972557494
  NPD
• Cardiovascular Care Providers, Inc.

  • Specialist
  • Houston, TX
  • NPI 1437242617
  NPD (past)

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

• Bio-Medical Applications of Louisiana, LLC

  dba Fresenius Kidney Care Tchefuncte River

  • End-Stage Renal Disease (ESRD) Treatment Clinic/Center
  • Madisonville, LA
  • NPI 1124536552

  Dialysis facility

  Care Compare affiliation Name & address match
• North Oaks Medical Center, LLC

  • Rural Acute Care Hospital
  • Hammond, LA
  • NPI 1144227539
  Care Compare affiliation

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

{
    "created_epoch": "1334102400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1758067200000",
    "number": "1023375300",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 3370",
            "city": "COVINGTON",
            "state": "LA",
            "postal_code": "704343370",
            "telephone_number": "985-867-8585",
            "fax_number": "985-867-3644"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1970 N HIGHWAY 190",
            "city": "COVINGTON",
            "state": "LA",
            "postal_code": "704335364",
            "telephone_number": "985-867-8585",
            "fax_number": "985-867-3644"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MARES",
        "first_name": "JON",
        "middle_name": "WILLIAM",
        "credential": "D.O.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2012-04-11",
        "last_updated": "2025-09-17",
        "certification_date": "2025-09-17",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "TX",
            "license": "Q6769",
            "primary": false
        },
        {
            "code": "207RN0300X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Nephrology",
            "state": "IL",
            "license": "036.151545",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Cyrus Jon Mansouri, DDS
• Laiyatu E. B. Manya, PSYD
• Demetrius M Maraganore, M.D.
• Deairea Marchand, LOT
• Richard G Marek Jr., MD
• Julianna Marie Maricelli
• Brooke Bourgeois Marinello
• Mark Siverd OD LLC
• Amy Pollard Marshall, P.T.A.
• Maximino Martell, APRN, CCNS, RN, MSN

• Nephrology Physician in Covington, LA
• Providers in Covington, LA by specialty
• Nephrology Physician in Louisiana

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 17, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• 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.