Stephen Ionadi
NPI 1437537586 · Medical Physician Assistant · Butler, PA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephen Ionadi is a Medical Physician Assistant provider in Butler, PA (NPI 1437537586).
Provider details
- NPI number
- 1437537586
- Entity type
- Individual
- Primary specialty
- Medical Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Male
- Sole proprietor
- Yes
- License
- MA054043 (PA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
11 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
158 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Emergency Department Visit With High Level of Medical Decision Making99285 | 88 | $142 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 51 | $98 |
| Critical Care, First 30-74 Minutes99291 | 19 | $171 |
Typical Medicare-allowed amounts for these services range $98–$171 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Methylprednisolone | 32 | 32 |
| Naproxen | 28 | 28 |
| Oxycodone Hcl/Acetaminophenbrand: Oxycodone-Acetaminophen | 26 | 26 |
| Prednisone | 26 | 26 |
| Cephalexin | 23 | 23 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 23 | 23 |
| Sulfamethoxazole/Trimethoprimbrand: Sulfamethoxazole-Trimethoprim |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$18 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2015-05-09
- Last updated
- 2015-05-09
Frequently asked questions
- What is Stephen Ionadi's NPI number?
- Stephen Ionadi's National Provider Identifier (NPI) is 1437537586, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Ionadi's specialty?
- Stephen Ionadi is listed in the NPPES registry with a primary specialty of Medical Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Stephen Ionadi located?
- Stephen Ionadi's practice location on file with NPPES is 1 Hospital Way, Butler, PA 16001-4670.
- What is Stephen Ionadi's phone number?
- The practice phone number listed in the NPPES registry for Stephen Ionadi is (724) 284-4066.
- Does Stephen Ionadi accept Medicare?
- Stephen Ionadi is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephen Ionadi's NPI active?
- Yes — Stephen Ionadi's NPI (1437537586) is active in the NPPES registry as of the last update on 2015-05-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.