Quick answers
- Does Karena Regan accept Medicare assignment?
- Yes. Medicare's clinician data says Karena Regan 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 Karena Regan see?
- In 2024, CMS data shows 220 Original Medicare patients and 258 services for Karena Regan. This counts Original Medicare only and measures volume, not quality.
- What is Karena Regan's NPI number?
- 1588695480. 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 Karena Regan, 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 | 220 |
|---|---|
| Services billed to Medicare | 258 |
| Different services or procedures | 18 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Emergency department visit with moderate level of medical decision making (99284)165 services
- Emergency department visit with high level of medical decision making (99285)58 services
- Emergency department visit with low level of medical decision making (99283)13 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 pressure69%
- High cholesterol64%
- Arthritis50%
- Anxiety32%
- Diabetes29%
- Ischemic heart disease28%
Practice locations
Addresses where Karena Regan is enrolled with Medicare (CMS data updated October 2, 2026).
- 1400 S Dobson RdMesa, AZ 85202 (480) 412‑3000
Group practices
Medicare enrollment lists Karena Regan as a member of this group (CMS data updated October 2, 2026).
- Cep America- Arizona, PC93 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Mesa
Clinicians with the same Medicare primary specialty in Mesa, AZ — not a recommendation.
Other clinicians in Cep America- Arizona, PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 1999 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1588695480 |
| 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