Quick answers
- Which hospitals does John C. Carlson work at?
- Medicare's official clinician data lists John C. Carlson at 1 hospital: Ochsner Medical Center Acute. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John C. Carlson see patients?
- Medicare's clinician data lists 1 practice location in New Orleans, LA. Call before your visit to confirm the address.
- What is John C. Carlson's specialty?
- Medicare lists Allergy/Immunology as the primary specialty, and also Pediatric Medicine.
- Does John C. Carlson accept Medicare assignment?
- Yes. Medicare's clinician data says John C. Carlson 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 John C. Carlson?
- (504) 842-3000, as listed in official Medicare / NPI Registry data.
- What is John C. Carlson's NPI number?
- 1700058310. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where John C. Carlson works
Medicare's Facility Affiliation Data lists John C. Carlson at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Ochsner Medical Center AcuteNew Orleans, LA · Acute Care Hospital · CCN 190036
Practice locations
Addresses where John C. Carlson is enrolled with Medicare (CMS data updated 2026-10-02).
- 1514 Jefferson HwyNew Orleans, LA 70121 (504) 842‑3000
Group practices
Medicare enrollment lists John C. Carlson as a member of this group (CMS data updated 2026-10-02).
- Ochsner Clinic LLC2,864 clinicians in the group
Specialties
- Allergy/Immunologyprimary
- Pediatric Medicinealso
Other allergist and immunologists in New Orleans
Clinicians with the same Medicare primary specialty in New Orleans, LA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Tulane University School Of Medicine |
| Graduation year | 2004 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1700058310 |
| 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