Quick answers
- Does Josiah O. Onyenekwe accept Medicare assignment?
- Yes. Medicare's clinician data says Josiah O. Onyenekwe 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 Josiah O. Onyenekwe see?
- In 2024, CMS data shows 596 Original Medicare patients and 699 services for Josiah O. Onyenekwe. This counts Original Medicare only and measures volume, not quality.
- What is Josiah O. Onyenekwe's NPI number?
- 1558781740. 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 Josiah O. Onyenekwe, 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 | 596 |
|---|---|
| Services billed to Medicare | 699 |
| Different services or procedures | 22 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Emergency department visit with high level of medical decision making (99285)403 services
- Emergency department visit with moderate level of medical decision making (99284)205 services
- Emergency department visit with low level of medical decision making (99283)26 services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)19 services
- Critical care, first 30-74 minutes (99291)18 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 cholesterol74%
- Arthritis51%
- Ischemic heart disease51%
- Heart failure40%
- Diabetes36%
Hospitals where Josiah O. Onyenekwe works
Medicare's Facility Affiliation Data lists Josiah O. Onyenekwe 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.
- Baptist Health Medical Center North Little RockNorth Little Rock, AR · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 040036
- Baptist Health Medical Center-Drew CountyMonticello, AR · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 040051
- Citizens Medical CenterVictoria, TX · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 450023
- Conway Regional Medical Center, IncConway, AR · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 040029
Practice locations
Addresses where Josiah O. Onyenekwe is enrolled with Medicare (CMS data updated October 2, 2026).
- 1555 Exchange Ave, Baptist Health Medical Center ConwayConway, AR 72032 (501) 585‑2000
- 2302 College AveConway, AR 72034 (501) 329‑3831
- 2701 Hospital DrVictoria, TX 77901 (361) 573‑9181
- 778 Scogin DrMonticello, AR 71655 (870) 367‑2411
Group practices
Medicare enrollment lists Josiah O. Onyenekwe as a member of these groups (CMS data updated October 2, 2026).
- Greenbrier Emergency Services, Inc.54 clinicians in the group
- Oleander Emergency Medicine Associates PA22 clinicians in the group
- Faulkner Emergency Group, PLLC19 clinicians in the group
- Monticello Ess LLC8 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Conway
Clinicians with the same Medicare primary specialty in Conway, AR — not a recommendation.
Other clinicians in Greenbrier Emergency Services, Inc.
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2013 (13 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1558781740 |
| 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