Mark Arnett, M.D.
NPI 1538114616 · Diagnostic Radiology Physician · Oak Park, IL
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Arnett, M.D. is a Diagnostic Radiology Physician provider in Oak Park, IL (NPI 1538114616).
Provider details
- NPI number
- 1538114616
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 12259 (NV)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
1,228 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) |
|---|---|---|
| X-Ray of Chest, 1 View71045 | 238 | $9 |
| Ct Scan Head Or Brain Without Contrast70450 | 162 | $40 |
| Ct Scan of Abdomen and Pelvis With Contrast74177 | 97 | $86 |
| Limited Ultrasound Scan of Joint Or Other Extremity Structure Except Blood Vessels76882 | 76 | $33 |
| Ct Scan of Chest With Contrast71260 | 73 | $54 |
| X-Ray of Chest, 2 Views71046 | 68 | $11 |
| Ct Scan of Upper Spine Without Contrast |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$22 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
Additional practice locations (1)
- 1740 W Taylor StChicago, IL 60612-7232Phone: (312) 413-4900
Registry dates
- Enumerated
- 2006-05-24
- Last updated
- 2024-10-28
- Certified
- 2024-10-28
Frequently asked questions
- What is Mark Arnett's NPI number?
- Mark Arnett's National Provider Identifier (NPI) is 1538114616, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Arnett's specialty?
- Mark Arnett is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Arnett located?
- Mark Arnett's practice location on file with NPPES is 3 Erie Ct, Oak Park, IL 60302-2519.
- What is Mark Arnett's phone number?
- The practice phone number listed in the NPPES registry for Mark Arnett is (707) 783-3532.
- Does Mark Arnett accept Medicare?
- Mark Arnett is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Arnett's NPI active?
- Yes — Mark Arnett's NPI (1538114616) is active in the NPPES registry as of the last update on 2024-10-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.