Doctor profile · Federal record
Dr. Nathan Siesener, MD
Diagnostic Radiology Physician (CMS: Diagnostic Radiology) · Belleville, IL
- NPI 1295239804
- Accepts Medicare
- MIPS 86.9 / 100 · 2023
- 8 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
4500 Memorial Dr, Dept Radiology
Belleville, IL 622265360
(618) 257-5613
fax (314) 454-4641 - Mailing address
-
Po Box 7412011
Chicago, IL 606742011
Credentials & registration
- NPI registered
- March 2018 — 8 yrs on file
- Profile last updated
- October 21, 2025
- Year of graduation
- 2018 — 8 yrs since
- Specialty taxonomy
- 2085R0202X — NUCC code
- State license (1)
- Illinois #036164864
- Medicaid
- MO #200128296
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1295239804. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
171
Distinct HCPCS
6
Medicare allowed
$5,208
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
71045 |
X-ray of chest, 1 view | 62 | 60 | $9 | |
70450 |
Ct scan head or brain without contrast | 43 | 43 | $39 | |
71046 |
X-ray of chest, 2 views | 19 | 19 | $10 | |
74177 |
Ct scan of abdomen and pelvis with contrast | 19 | 19 | $86 | |
74018 |
X-ray of abdomen, 1 view | 15 | 14 | $9 | |
74176 |
Ct scan of abdomen and pelvis without contrast | 13 | 13 | $79 |
In context: peer comparison
Among 9 peers in this city , average services per provider: 183. This provider delivers 0.9× the peer median.Hospital affiliations
Frequently asked questions
What is Dr. Nathan Siesener's medical specialty?
Dr. Nathan Siesener practices Diagnostic Radiology Physician in Belleville, IL.
Where does Dr. Nathan Siesener practice?
Dr. Nathan Siesener practices at 4500 Memorial Dr, Belleville, IL 622265360. Office phone: 6182575613.
What is Dr. Nathan Siesener's NPI?
Dr. Nathan Siesener's National Provider Identifier (NPI) is 1295239804, issued by NPPES.
Does Dr. Nathan Siesener accept Medicare assignment?
Yes. Dr. Nathan Siesener accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Nathan Siesener commonly perform?
Top Medicare-reported procedures in 2023: X-ray of chest, 1 view (HCPCS 71045); Ct scan head or brain without contrast (HCPCS 70450); X-ray of chest, 2 views (HCPCS 71046). Source: CMS Medicare Physician & Other Practitioners file.