Quick answers
- Does Merlis O. Guerra accept Medicare assignment?
- Yes. Medicare's clinician data says Merlis O. Guerra 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 Merlis O. Guerra see?
- In 2024, CMS data shows 102 Original Medicare patients and 741 services for Merlis O. Guerra. This counts Original Medicare only and measures volume, not quality.
- What is Merlis O. Guerra's NPI number?
- 1265018584. 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 Merlis O. Guerra, 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 | 102 |
|---|---|
| Services billed to Medicare | 741 |
| Different services or procedures | 5 |
| Participating Medicare provider | Yes |
| Average age of these patients | 77 |
Most frequent services
- Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes (99309)413 services
- Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more (99308)171 services
- Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes (99310)99 services
- Initial nursing facility care with high level of medical decision making, per day, if using time, 50 minutes or more (99306)52 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%
- Depression58%
- Anxiety55%
- Alzheimer's disease or dementia55%
- Diabetes50%
Practice locations
Addresses where Merlis O. Guerra is enrolled with Medicare (CMS data updated October 2, 2026).
- 14775 W Yorkshire DrSurprise, AZ 85374 (623) 594‑5675
- 22922 N 40th PlPhoenix, AZ 85050 (347) 309‑3320
- 5358 E Baseline RdMesa, AZ 85206 (480) 699‑9624
- 8502 E Princess Dr, Suite 200eScottsdale, AZ 85255 (480) 631‑4978
Group practices
Medicare enrollment lists Merlis O. Guerra as a member of these groups (CMS data updated October 2, 2026).
- Leading Healthcare PLLC41 clinicians in the group
- Alante Primary Care and Palliative Services LLC13 clinicians in the group
- Z Medicine LLC11 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Surprise
Clinicians with the same Medicare primary specialty in Surprise, AZ — not a recommendation.
Other clinicians in Leading Healthcare PLLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2019 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1265018584 |
| 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