Quick answers
- Does Jeffrey Downen accept Medicare assignment?
- Yes. Medicare's clinician data says Jeffrey Downen 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 Jeffrey Downen see?
- In 2024, CMS data shows 97 Original Medicare patients and 160 services for Jeffrey Downen. This counts Original Medicare only and measures volume, not quality.
- What is Jeffrey Downen's NPI number?
- 1871170951. 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 Jeffrey Downen, 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 | 97 |
|---|---|
| Services billed to Medicare | 160 |
| Different services or procedures | 11 |
| Participating Medicare provider | Yes |
| Average age of these patients | 70 |
Most frequent services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)65 services
- Emergency department visit with high level of medical decision making (99285)53 services
- Critical care, first 30-74 minutes (99291)14 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 cholesterol72%
- Chronic kidney disease47%
- Diabetes44%
- Arthritis42%
- Heart failure37%
Hospitals where Jeffrey Downen works
Medicare's Facility Affiliation Data lists Jeffrey Downen 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.
- Shands JacksonvilleJacksonville, FL · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 100001
Practice locations
Addresses where Jeffrey Downen is enrolled with Medicare (CMS data updated October 2, 2026).
- 15255 Max Leggett PkwyJacksonville, FL 32218 (904) 383‑1000
- 15255 Max Leggett Pkwy, Suite 3600Jacksonville, FL 32218 (904) 383‑1000
- 655 W 8th StJacksonville, FL 32231 (904) 244‑6340
Group practices
Medicare enrollment lists Jeffrey Downen as a member of this group (CMS data updated October 2, 2026).
- University of Florida Jacksonville Physicians, Inc.910 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in Jacksonville
Clinicians with the same Medicare primary specialty in Jacksonville, FL — not a recommendation.
Other clinicians in University of Florida Jacksonville Physicians, Inc.
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2021 (5 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1871170951 |
| 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