Quick answers
- Does Chris G. Theodossiou accept Medicare assignment?
- Yes. Medicare's clinician data says Chris G. Theodossiou accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Chris G. Theodossiou see?
- In 2024, CMS data shows 240 Original Medicare patients and 870 services for Chris G. Theodossiou. This counts Original Medicare only and measures volume, not quality.
- What is Chris G. Theodossiou's NPI number?
- 1063458438. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Chris G. Theodossiou, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 240 |
|---|---|
| Services billed to Medicare | 870 |
| Different services or procedures | 9 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)271 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)243 services
- Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)230 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)64 services
- New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)47 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)65%
- Arthritis49%
- Osteoporosis31%
- Chronic kidney disease28%
Hospitals where Chris G. Theodossiou works
Medicare's Facility Affiliation Data lists Chris G. Theodossiou at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Ochsner Medical Center - Baton RougeBaton Rouge, LA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 190202
- Ochsner Medical Center AcuteNew Orleans, LA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 190036
- Ochsner Medical Center-KennerKenner, LA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 190274
- St Charles Parish HospitalLuling, LA · Acute Care Hospital · Emergency services: listed by Medicare · CCN 190079
- St Tammany Parish HospitalCovington, LA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 190045
Practice locations
Addresses where Chris G. Theodossiou is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 7; the Medicare profile lists all.
- 104 Acadia Park DrRaceland, LA 70394 (985) 537‑3211
- 1514 Jefferson HwyNew Orleans, LA 70121 (504) 842‑3000
- 1515 River RdJefferson, LA 70121 (504) 842‑3910
- 1516 Jefferson HwyNew Orleans, LA 70121 (504) 842‑3470
- 16777 Medical Ctr DrBaton Rouge, LA 70816 (225) 754‑3278
Group practices
Medicare enrollment lists Chris G. Theodossiou as a member of this group (CMS data updated October 2, 2026).
- Ochsner Clinic LLC2,864 clinicians in the group
Specialties
- Hematology/Oncologyprimary
- Internal Medicinealso
Other hematologist-oncologists in Louisiana
Clinicians with the same Medicare primary specialty in Louisiana — not a recommendation.
Other clinicians in Ochsner Clinic LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1984 (42 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1063458438 |
| 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 October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- 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