Dr. Timothy S Chen , MD
Radiology - Diagnostic Radiology • Appleton, WI
4321 W College Ave, Ste 300
Appleton, WI 549143966
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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Dr. Timothy Chen is listed in NPPES under Radiology - Diagnostic Radiology.
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NPI assigned on June 16, 2006; this date does not establish years in practice.
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Published CMS data list 1,299 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 71045 — X-ray of chest, 1 view: 268 service units.
- 74177 — Ct scan of abdomen and pelvis with contrast: 107 service units.
- 71046 — X-ray of chest, 2 views: 99 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See all 32 records in the table · Guide: How to read Medicare Part B data
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Fewer Medicare Part B services than 70% of clinicians listed under Radiology - Diagnostic Radiology in Wisconsin (2024, 645 clinicians with data). Median for this group: 2,041. Middle half: 1,063 to 4,066.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 1,520 in 2020 to 1,299 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
4321 W College Ave
Ste 300
Appleton, WI 549143966
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
CMS Doctors and Clinicians lists 4 distinct group names: Medical X-Ray Consultants Ltd; Premier Radiology Wisconsin Llc; Radiology Associates Of Appleton Sc and 1 more. See the list
Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
Indiana University School Of Medicine
1999
What Public CMS Data Show
Radiology - Diagnostic Radiology: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
1,151 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners – by Provider, 2024.
Medicare-allowed amount
About $37,438 in 2024
The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.
Paid by Medicare
About $27,662 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.
Industry payments (Open Payments)
No Open Payments records are listed for this clinician for 2019–2025.
Years since graduation
27 years (graduated 1999)
CMS Doctors and Clinicians data list 1999 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File.
NPI first issued
2006
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Accepts Medicare assignment
CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Dr. Chen has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Dr. Chen as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Appleton and Wisconsin
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Fewer Medicare Part B services than 70% of clinicians listed under Radiology - Diagnostic Radiology in Wisconsin (2024, 645 clinicians with data). Median for this group: 2,041. Middle half: 1,063 to 4,066.
Too few clinicians listed under Radiology - Diagnostic Radiology in Appleton have Medicare Part B data for 2024 to compare.
Medicare-allowed amount
A lower Medicare-allowed amount than 75% of clinicians listed under Radiology - Diagnostic Radiology in Wisconsin (2024, 645 clinicians with data). Median for this group: $65,184. Middle half: $41,352 to $103,038.
Too few clinicians listed under Radiology - Diagnostic Radiology in Appleton have Medicare Part B data for 2024 to compare.
Paid by Medicare
A lower Medicare payment amount than 75% of clinicians listed under Radiology - Diagnostic Radiology in Wisconsin (2024, 645 clinicians with data). Median for this group: $52,288. Middle half: $32,070 to $80,473.
Too few clinicians listed under Radiology - Diagnostic Radiology in Appleton have Medicare Part B data for 2024 to compare.
16 active clinicians are listed under Radiology - Diagnostic Radiology with a practice address in Appleton, WI (1,005 in Wisconsin).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Appleton
0% of these 16 clinicians have the CMS telehealth indicator.
43.8% of these 16 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services decreased 15% from 1,520 in 2020 to 1,299 in 2024.
- 2020: 1,520
- 2021: 2,104
- 2022: 2,139
- 2023: 1,813
- 2024: 1,299
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Medicare-allowed amount
Medicare-allowed amount decreased 10% from $41,737 in 2020 to $37,438 in 2024.
- 2020: $41,737
- 2021: $53,515
- 2022: $51,152
- 2023: $48,433
- 2024: $37,438
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Paid by Medicare
Paid by Medicare decreased 13% from $31,933 in 2020 to $27,662 in 2024.
- 2020: $31,933
- 2021: $40,565
- 2022: $36,889
- 2023: $34,083
- 2024: $27,662
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · Report an error.
Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016–2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners – by Provider and Service data, 2017–2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
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71045
X-ray of chest, 1 view
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268 | 235 | $153.00 | $7.85 |
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74177
Ct scan of abdomen and pelvis with contrast
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107 | 104 | $1471.00 | $80.45 |
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71046
X-ray of chest, 2 views
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99 | 95 | $178.00 | $9.81 |
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70450
Ct scan head or brain without contrast
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88 | 85 | $554.00 | $36.50 |
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74176
Ct scan of abdomen and pelvis without contrast
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53 | 53 | $1406.00 | $77.01 |
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74018
X-ray of abdomen, 1 view
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49 | 44 | $153.00 | $8.18 |
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71275
Ct scan of blood vessels of chest with contrast
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45 | 42 | $1448.00 | $79.41 |
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71260
Ct scan of chest with contrast
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43 | 43 | $776.00 | $49.63 |
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73630
X-ray of foot, minimum of 3 views
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42 | 39 | $121.00 | $7.55 |
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73030
X-ray of shoulder, minimum of 2 views
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41 | 39 | $146.00 | $8.50 |
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72100
X-ray of lower and sacral spine, 2-3 views
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40 | 40 | $174.00 | $10.13 |
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72125
Ct scan of upper spine without contrast
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37 | 37 | $688.00 | $43.55 |
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73502
X-ray of hip, 2-3 views
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34 | 34 | $212.00 | $9.94 |
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73721
Mri scan of leg joint without contrast
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30 | 29 | $862.00 | $59.81 |
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71250
Ct scan of chest without contrast
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27 | 27 | $696.00 | $47.53 |
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73130
X-ray of hand, minimum of 3 views
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25 | 21 | $128.00 | $7.86 |
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73564
X-ray of knee, 4 or more views
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25 | 22 | $174.00 | $10.45 |
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73221
Mri scan of arm joint without contrast
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23 | 23 | $862.00 | $59.95 |
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73200
Ct scan of arm without contrast
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22 | 21 | $607.00 | $44.17 |
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72170
X-ray of pelvis, 1-2 views
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21 | 21 | $133.00 | $7.85 |
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73560
X-ray of knee, 1-2 views
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19 | 18 | $141.00 | $7.94 |
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73610
X-ray of ankle, minimum of 3 views
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19 | 19 | $128.00 | $7.86 |
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93971
Ultrasound study of one arm or leg veins with compression and maneuvers
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19 | 19 | $397.00 | $19.40 |
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72040
X-ray of upper spine, 2-3 views
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17 | 15 | $174.00 | $10.11 |
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76770
Complete ultrasound scan behind abdominal cavity
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17 | 17 | $516.00 | $32.67 |
(top 25 shown)
Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Specialties & License Numbers Reported to NPPES
NUCC Taxonomy Code: 2085R0202X
A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - DIAGNOSTIC RADIOLOGY
I20260514001786
MI
3173568979
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Medicare Group Practice Enrollments
Source: CMS Doctors and Clinicians National Downloadable File
Medical X-Ray Consultants Ltd
201 W Northland Ave, Appleton, WI 549112600
Phone: 9209960724
Radiology Associates Of Appleton Sc
3916 N Intertech Court, Appleton, WI 549136956
Phone: 9203581520
Radiology Associates Of Appleton Sc
225 Memorial Dr, Berlin, WI 549231243
Phone: 9203581520
Radiology Associates Of Appleton Sc
100 County Rd B, Shawano, WI 541667072
Phone: 9203581520
Medical X-Ray Consultants Ltd
900 W Clairemont Ave, Eau Claire, WI 547016122
Phone: 7158581777
Tomah Memorial Hospital Inc
501 Gopher Dr, Tomah, WI 546604513
Phone: 6083722181
Medical X-Ray Consultants Ltd
4130 State Rd, Eau Claire, WI 547017806
Phone: 7158309507
Medical X-Ray Consultants Ltd
1120 Pine St, Stanley, WI 547681297
Phone: 7156445571
Radiology Associates Of Appleton Sc
1818 N Meade St, Appleton, WI 549113454
Phone: 9203581520
Radiology Associates Of Appleton Sc
2400 E Capitol Dr, Appleton, WI 549118728
Phone: 9203581520
Premier Radiology Wisconsin Llc
10180 Washington Ave, Mount Pleasant, WI 531771604
Phone: 4149737830
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Radiology - Diagnostic Radiology
Doctor of Medicine (M.D.)
Radiology - Diagnostic Radiology
Doctor of Medicine (M.D.)
Radiology - Diagnostic Radiology
Doctor of Osteopathic Medicine (D.O.)
Radiology - Diagnostic Radiology
Doctor of Medicine (M.D.)
Radiology - Diagnostic Radiology
Doctor of Medicine (M.D.)
Radiology - Diagnostic Radiology
Doctor of Medicine (M.D.)
Career & Practice History
NPI enumerated June 16, 2006.
No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to August 2026.
NPI Administrative Meta
Other Radiology - Diagnostic Radiology Specialists in Appleton
- Dr. Stephen Bejvan, MD
- Dr. Timothy Bernauer, MD
- Dr. Keyvan Gharabeighlou, DO
- Dr. Erik Ray, MD
- Dr. Brian Hebl, MD
- Dr. John Iglar, MD
Mailing Address
Po Box 117
Appleton, WI 549120117
Phone: 9207395642