Quick answers
- Does Carlos A. Gambirazio accept Medicare assignment?
- Yes. Medicare's clinician data says Carlos A. Gambirazio 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 Carlos A. Gambirazio see?
- In 2024, CMS data shows 409 Original Medicare patients and 1,051 services for Carlos A. Gambirazio. This counts Original Medicare only and measures volume, not quality.
- What is Carlos A. Gambirazio's NPI number?
- 1033187125. 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 Carlos A. Gambirazio, 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 | 409 |
|---|---|
| Services billed to Medicare | 1,051 |
| Different services or procedures | 25 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)261 services
- Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)232 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)190 services
- Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use (90677)78 services
- Administration of pneumococcal vaccine (G0009)71 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 cholesterol75%
- High blood pressure74%
- Arthritis39%
- Ischemic heart disease28%
- Chronic kidney disease27%
- Diabetes26%
Hospitals where Carlos A. Gambirazio works
Medicare's Facility Affiliation Data lists Carlos A. Gambirazio 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.
- Franciscan Health LafayetteLafayette, IN · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 150109
- Indiana University HealthIndianapolis, IN · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 150056
- Indiana University Health Arnett HospitalLafayette, IN · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 150173
- Indiana University Health Frankfort IncFrankfort, IN · Critical Access Hospital · Emergency services: listed by Medicare · CCN 151316
- Indiana University Health White Memorial HospitalMonticello, IN · Critical Access Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 151312
Practice locations
Addresses where Carlos A. Gambirazio is enrolled with Medicare (CMS data updated October 2, 2026).
- 1701 N Senate BlvdIndianapolis, IN 46202 (888) 484‑3258
- 2600 Greenbush StLafayette, IN 47904 (765) 448‑8000
Group practices
Medicare enrollment lists Carlos A. Gambirazio as a member of these groups (CMS data updated October 2, 2026).
- IU Health Medical Group LLC4,462 clinicians in the group
- Arnett Clinic LLC390 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Indianapolis
Clinicians with the same Medicare primary specialty in Indianapolis, IN — not a recommendation.
Other clinicians in IU Health Medical Group LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1992 (34 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1033187125 |
| 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