Quick answers
- Does Ives R. De Chazal accept Medicare assignment?
- Yes. Medicare's clinician data says Ives R. De Chazal 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 Ives R. De Chazal see?
- In 2024, CMS data shows 564 Original Medicare patients and 2,555 services for Ives R. De Chazal. This counts Original Medicare only and measures volume, not quality.
- What is Ives R. De Chazal's NPI number?
- 1891792107. 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 Ives R. De Chazal, 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 | 564 |
|---|---|
| Services billed to Medicare | 2,555 |
| Different services or procedures | 35 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)508 services
- Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes (99309)326 services
- Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes (99310)286 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)195 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)181 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%
- Arthritis51%
- COPD49%
- Ischemic heart disease45%
- Diabetes40%
Hospitals where Ives R. De Chazal works
Medicare's Facility Affiliation Data lists Ives R. De Chazal 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.
- St Joseph's HospitalTucson, AZ · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 030011
- Tucson Medical CenterTucson, AZ · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 030006
Practice locations
Addresses where Ives R. De Chazal is enrolled with Medicare (CMS data updated October 2, 2026).
- 1951 N Wilmot Rd, Bldg 4Tucson, AZ 85712 (520) 318‑1114
- 2380 N Ferguson AveTucson, AZ 85712
- 3705 N Swan RdTucson, AZ 85718 (520) 623‑4590
- 5301 E Grant RdTucson, AZ 85712 (520) 324‑2308
- 603 N Wilmot Rd, Suite 151Tucson, AZ 85711 (520) 420‑2560
Group practices
Medicare enrollment lists Ives R. De Chazal as a member of these groups (CMS data updated October 2, 2026).
- TMC Medical Network281 clinicians in the group
- Tmcone96 clinicians in the group
- Ives de Chazal, MD, PLLC2 clinicians in the group
Specialties
Other pulmonologists in Tucson
Clinicians with the same Medicare primary specialty in Tucson, AZ — not a recommendation.
Other clinicians in TMC Medical Network
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1993 (33 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1891792107 |
| 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