Doctor profile · Federal record

Dr. Timothy Chen, M.D.

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

  • NPI 1841234937
  • Accepts Medicare
  • 27 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
4321 W College Ave, Ste 300
Appleton, WI 549143966
(920) 739-5642
fax (920) 968-0259
Mailing address
Po Box 117
Appleton, WI 549120117

Credentials & registration

NPPES · NUCC
NPI registered
June 2006 — 20 yrs on file
Profile last updated
January 11, 2012
Year of graduation
1999 — 27 yrs since
Specialty taxonomy
2085R0202X — NUCC code
State license (1)
Wisconsin #48268
Medicaid
WI #34655900

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1841234937. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
1,813
Distinct HCPCS
10
Medicare allowed
$48,433
HCPCS Description Services Patients Avg allowed
71045 X-ray of chest, 1 view 270 236 $8
74177 Ct scan of abdomen and pelvis with contrast 105 103 $83
71046 X-ray of chest, 2 views 102 102 $10
70450 Ct scan head or brain without contrast 97 96 $38
71046 X-ray of chest, 2 views 66 61 $10
73030 X-ray of shoulder, minimum of 2 views 55 47 $9
73502 X-ray of hip, 2-3 views 54 52 $10
71275 Ct scan of blood vessels of chest with contrast 49 49 $81
77080 Dxa bone density measurement of hip, pelvis, spine 48 48 $9
72100 X-ray of lower and sacral spine, 2-3 views 42 40 $10

In context: peer comparison

Among 5 peers in this city , average services per provider: 36. This provider delivers 50× the peer median.

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Timothy Chen's medical specialty?
Dr. Timothy Chen practices Diagnostic Radiology Physician in Appleton, WI.
Where does Dr. Timothy Chen practice?
Dr. Timothy Chen practices at 4321 W College Ave, Appleton, WI 549143966. Office phone: 9207395642.
What is Dr. Timothy Chen's NPI?
Dr. Timothy Chen's National Provider Identifier (NPI) is 1841234937, issued by NPPES.
Does Dr. Timothy Chen accept Medicare assignment?
Yes. Dr. Timothy Chen accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Timothy Chen commonly perform?
Top Medicare-reported procedures in 2023: X-ray of chest, 1 view (HCPCS 71045); Ct scan of abdomen and pelvis with contrast (HCPCS 74177); X-ray of chest, 2 views (HCPCS 71046). Source: CMS Medicare Physician & Other Practitioners file.