Quick answers
- Does Paola M. Casillas accept Medicare assignment?
- Yes. Medicare's clinician data says Paola M. Casillas 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 Paola M. Casillas see?
- In 2024, CMS data shows 30 Original Medicare patients and 140 services for Paola M. Casillas. This counts Original Medicare only and measures volume, not quality.
- What is Paola M. Casillas's NPI number?
- 1689178691. 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 Paola M. Casillas, 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 | 30 |
|---|---|
| Services billed to Medicare | 140 |
| Different services or procedures | 31 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Insertion of needle into vein for collection of blood sample (36415)22 services
- Hemoglobin a1c level (83036)21 services
- Blood test, comprehensive group of blood chemicals (80053)12 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 cholesterol53%
- Diabetes50%
- Arthritis37%
- Ischemic heart disease37%
Practice locations
Addresses where Paola M. Casillas is enrolled with Medicare (CMS data updated October 2, 2026).
- 707 N Alvernon Way, Suite 101Tucson, AZ 85711 (520) 694‑1611
- 707 N Alvernon Way, Suite 201Tucson, AZ 85711 (520) 874‑2000
- 839 W Congress StTucson, AZ 85745 (520) 670‑3909
Group practices
Medicare enrollment lists Paola M. Casillas as a member of these groups (CMS data updated October 2, 2026).
- Banner-University Medical Group1,072 clinicians in the group
- El Rio Santa Cruz Neighborhood Health Center, Inc.275 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Tucson
Clinicians with the same Medicare primary specialty in Tucson, AZ — not a recommendation.
Other clinicians in Banner-University Medical Group
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Colorado School Of Medicine, Denver |
| Graduation year | 2018 (8 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1689178691 |
| 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
- 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