Quick answers
- Does Guillermo O. Aragon accept Medicare assignment?
- Yes. Medicare's clinician data says Guillermo O. Aragon 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 Guillermo O. Aragon see?
- In 2024, CMS data shows 93 Original Medicare patients and 109 services for Guillermo O. Aragon. This counts Original Medicare only and measures volume, not quality.
- What is Guillermo O. Aragon's NPI number?
- 1093232431. 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 Guillermo O. Aragon, 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 | 93 |
|---|---|
| Services billed to Medicare | 109 |
| Different services or procedures | 14 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)40 services
- Hospital discharge day management, more than 30 minutes (99239)29 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%
- Arthritis62%
- Ischemic heart disease47%
- Chronic kidney disease33%
- Diabetes31%
Hospitals where Guillermo O. Aragon works
Medicare's Facility Affiliation Data lists Guillermo O. Aragon 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 Josephs HospitalTampa, FL · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 100075
Practice locations
Addresses where Guillermo O. Aragon is enrolled with Medicare (CMS data updated October 2, 2026).
- 3001 W Dr Martin Luther King Jr BlvdTampa, FL 33607 (813) 870‑4000
- 4501 Bruce B Downs BlvdWesley Chapel, FL 33544 (813) 870‑4000
Group practices
Medicare enrollment lists Guillermo O. Aragon as a member of these groups (CMS data updated October 2, 2026).
- Emergency Medical Associates of Tampa Bay LLC87 clinicians in the group
- Observation Medical Group LLC47 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Tampa
Clinicians with the same Medicare primary specialty in Tampa, FL — not a recommendation.
Other clinicians in Emergency Medical Associates of Tampa Bay LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2017 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1093232431 |
| 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