Quick answers
- Which hospitals does Jon Mares work at?
- Medicare's official clinician data lists Jon Mares at 1 hospital: North Oaks Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Jon Mares see patients?
- Medicare's clinician data lists 1 practice location in Covington, LA. Call before your visit to confirm the address.
- What is Jon Mares's specialty?
- Medicare lists Nephrology as the primary specialty.
- Does Jon Mares accept Medicare assignment?
- Yes. Medicare's clinician data says Jon Mares accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Jon Mares?
- (985) 867-8585, as listed in official Medicare / NPI Registry data.
- What is Jon Mares's NPI number?
- 1023375300. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Jon Mares works
Medicare's Facility Affiliation Data lists Jon Mares at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- North Oaks Medical CenterHammond, LA · Acute Care Hospital · CCN 190015
Practice locations
Addresses where Jon Mares is enrolled with Medicare (CMS data updated 2026-10-02).
- 1970 N Hwy 190Covington, LA 70433 (985) 867‑8585
Group practices
Medicare enrollment lists Jon Mares as a member of this group (CMS data updated 2026-10-02).
- Nni Covington LLC6 clinicians in the group
Specialties
- Nephrologyprimary
Other nephrologists in Covington
Clinicians with the same Medicare primary specialty in Covington, LA — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Kansas City University Of Physicians And Surgeons |
| Graduation year | 2012 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1023375300 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians