Doctor profile · Federal record

Dr. Sergey Zhadanov, M.D.

Diagnostic Radiology Physician (CMS: Diagnostic Radiology) · Marshfield, WI

  • NPI 1356583728
  • Accepts Medicare
  • MIPS 76.2 / 100 · 2023
  • 30 yrs in practice
  • Male
  • Solo practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
1000 N Oak Ave
Marshfield, WI 544495703
(715) 389-0633

Credentials & registration

NPPES · NUCC
NPI registered
April 2009 — 17 yrs on file
Profile last updated
April 5, 2021
Year of graduation
1996 — 30 yrs since
Specialty taxonomy
2085R0202X — NUCC code
State license (1)
Wisconsin #64176-20

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1356583728. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
1,485
Distinct HCPCS
10
Medicare allowed
$76,035
HCPCS Description Services Patients Avg allowed
70450 Ct scan head or brain without contrast 266 252 $39
72148 Mri scan of lower spinal canal without contrast 152 152 $68
72100 X-ray of lower and sacral spine, 2-3 views 140 137 $10
70551 Mri scan of brain without contrast 131 131 $68
70553 Mri scan of brain before and after contrast 124 123 $106
72100 X-ray of lower and sacral spine, 2-3 views 75 53 $17
72125 Ct scan of upper spine without contrast 67 67 $46
72040 X-ray of upper spine, 2-3 views 64 61 $10
72141 Mri scan of upper spinal canal without contrast 51 51 $68
70491 Ct scan of soft tissue of neck with contrast 45 44 $63

In context: peer comparison

Among 7 peers in Marshfield Diagnostic Radiology Physician, average services per provider: 66. This provider delivers 23× the peer median.

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Sergey Zhadanov's medical specialty?
Dr. Sergey Zhadanov practices Diagnostic Radiology Physician in Marshfield, WI.
Where does Dr. Sergey Zhadanov practice?
Dr. Sergey Zhadanov practices at 1000 N Oak Ave, Marshfield, WI 544495703. Office phone: 7153890633.
What is Dr. Sergey Zhadanov's NPI?
Dr. Sergey Zhadanov's National Provider Identifier (NPI) is 1356583728, issued by NPPES.
Does Dr. Sergey Zhadanov accept Medicare assignment?
Yes. Dr. Sergey Zhadanov accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Sergey Zhadanov commonly perform?
Top Medicare-reported procedures in 2023: Ct scan head or brain without contrast (HCPCS 70450); Mri scan of lower spinal canal without contrast (HCPCS 72148); X-ray of lower and sacral spine, 2-3 views (HCPCS 72100). Source: CMS Medicare Physician & Other Practitioners file.