Quick answers
- Does Steven T. Gremillion accept Medicare assignment?
- Yes. Medicare's clinician data says Steven T. Gremillion 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 Steven T. Gremillion see?
- In 2024, CMS data shows 546 Original Medicare patients and 2,222 services for Steven T. Gremillion. This counts Original Medicare only and measures volume, not quality.
- What is Steven T. Gremillion's NPI number?
- 1902807233. 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 Steven T. Gremillion, 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 | 546 |
|---|---|
| Services billed to Medicare | 2,222 |
| Different services or procedures | 49 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)557 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)507 services
- Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)120 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)118 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)96 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%
- Arthritis47%
- Ischemic heart disease39%
- Diabetes36%
- Chronic kidney disease33%
Hospitals where Steven T. Gremillion works
Medicare's Facility Affiliation Data lists Steven T. Gremillion 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.
- Baton Rouge General Medical CenterBaton Rouge, LA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 190065
- Fmol Health | Our Lady of the LakeBaton Rouge, LA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 190064
Practice locations
Addresses where Steven T. Gremillion is enrolled with Medicare (CMS data updated October 2, 2026).
- 610 N Jefferson Ave, Louisiana Cardiology AssociatesPort Allen, LA 70767 (225) 767‑3900
- 7777 Hennessy Blvd, Suite 1000Baton Rouge, LA 70808
- 8585 Picardy AveBaton Rouge, LA 70809
- 8595 Picardy AveBaton Rouge, LA 70809
Group practices
Medicare enrollment lists Steven T. Gremillion as a member of these groups (CMS data updated October 2, 2026).
- Our Lady of the Lake Physician Group LLC644 clinicians in the group
- Baton Rouge General Physicians Inc191 clinicians in the group
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in Louisiana →
Other cardiologists in Louisiana
Clinicians with the same Medicare primary specialty in Louisiana — not a recommendation.
Other clinicians in Our Lady of the Lake Physician Group LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1997 (29 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1902807233 |
| 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