Active NPI 1457395519 Individual Practitioner Male Practitioner

Dr. Gregory J Knudson , MD

Radiology - Diagnostic Radiology • Appleton, WI

Professional Overview & Biography Verified Profile Summary

Dr. Gregory Knudson, MD is a registered healthcare professional specializing in Radiology - Diagnostic Radiology in Appleton, WI. Practice services are available at 2500 E ENTERPRISE AVE under active NPI credentials.

Frequently performed procedures and clinical services include x-ray of chest, 1 view, screening mammography, screening digital tomography of both breasts. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

2500 E Enterprise Ave
Unit C

Appleton, WI 54913

Telephone 9207395642

Fax 9209680259

Associated Practice Facility / Clinic

🏢 Neurology Associates Llc Facility NPI 1851607170

Specialty Benchmarks & Practice Insights

Comparative analytics for Radiology - Diagnostic Radiology in Appleton, WI

Active Practitioner

Practitioner Clinical Experience

Active

City Avg: 27.1 Yrs

State Avg: 23.8 Yrs

Regional Practice Density

16 Specialists

Practicing in Appleton, WI (1041 Statewide)

Telehealth Adoption Rate

0.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

91.8% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2021)

Reporting Year:

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
71045 X-ray of chest, 1 view	127	117	$119.00	$8.68
77067 Screening mammography	112	112	$245.00	$36.14
77063 Screening digital tomography of both breasts	99	99	$166.00	$28.58
71046 X-ray of chest, 2 views	81	79	$138.00	$10.41
77080 Dxa bone density measurement of hip, pelvis, spine	66	66	$200.00	$9.38
71046 X-ray of chest, 2 views	61	60	$138.00	$10.41
77067 Screening mammography	60	60	$245.00	$36.14
74177 Ct scan of abdomen and pelvis with contrast	57	56	$1144.00	$86.13
77063 Screening digital tomography of both breasts	49	49	$166.00	$28.58
71275 Ct scan of blood vessels of chest with contrast	42	42	$1126.00	$85.39
70450 Ct scan head or brain without contrast	40	40	$431.00	$39.46
78815 Nuclear medicine study from skull base to mid-thigh with ct scan	34	34	$1332.00	$112.80
74176 Ct scan of abdomen and pelvis without contrast	26	26	$1094.00	$82.19
74177 Ct scan of abdomen and pelvis with contrast	25	25	$1144.00	$86.13
77080 Dxa bone density measurement of hip, pelvis, spine	24	24	$200.00	$9.38
74018 X-ray of abdomen, 1 view	23	22	$119.00	$8.68
71260 Ct scan of chest with contrast	21	20	$604.00	$53.43
71260 Ct scan of chest with contrast	21	20	$604.00	$53.03
71250 Ct scan of chest without contrast	19	19	$541.00	$50.89
71250 Ct scan of chest without contrast	19	19	$541.00	$50.35
74230 Imaging for evaluation of swallowing function	18	17	$240.00	$25.15
73630 X-ray of foot, minimum of 3 views	17	16	$94.00	$8.48
76770 Complete ultrasound scan behind abdominal cavity	17	17	$401.00	$34.37
76770 Complete ultrasound scan behind abdominal cavity	16	16	$401.00	$34.78
93880 Ultrasound of both sides of head and neck blood flow	16	16	$816.00	$37.08
73030 X-ray of shoulder, minimum of 2 views	16	16	$114.00	$9.01
72125 Ct scan of upper spine without contrast	16	16	$535.00	$46.80
76705 Limited ultrasound scan of abdomen	15	15	$327.00	$27.81
93971 Ultrasound scan of veins of one arm or leg or limited including assessment of compression and functional maneuvers	14	14	$455.00	$20.72
76536 Ultrasound of head and neck	14	13	$297.00	$26.86
73560 X-ray of knee, 1-2 views	14	14	$109.00	$10.27
73030 X-ray of shoulder, minimum of 2 views	13	13	$114.00	$9.01
73502 X-ray of hip, 2-3 views	12	12	$231.00	$10.74
73564 X-ray of knee, 4 or more views	12	12	$136.00	$10.74
73564 X-ray of knee, 4 or more views	12	12	$136.00	$14.32
74178 Ct scan of abdomen and pelvis before and after contrast	12	12	$1208.00	$90.38
74018 X-ray of abdomen, 1 view	11	11	$119.00	$8.68
76705 Limited ultrasound scan of abdomen	11	11	$327.00	$27.90

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
71045 X-ray of chest, 1 view	157	145	$104.77	$8.97
77080 Dxa bone density measurement of hip, pelvis, spine	88	88	$164.45	$9.66
71046 X-ray of chest, 2 views	78	72	$123.33	$10.75
77067 Screening mammography	77	77	$242.08	$37.40
77063 Screening digital tomography of both breasts	64	64	$161.95	$29.40
74177 Ct scan of abdomen and pelvis with contrast	56	55	$1174.00	$89.66
77067 Screening mammography	54	54	$244.37	$37.48
71046 X-ray of chest, 2 views	53	53	$124.04	$10.77
70450 Ct scan head or brain without contrast	49	49	$462.18	$41.05
77063 Screening digital tomography of both breasts	46	46	$164.02	$29.45
77080 Dxa bone density measurement of hip, pelvis, spine	35	35	$173.86	$9.71
78815 Nuclear medicine study from skull base to mid-thigh with ct scan	35	34	$1251.00	$116.68
71275 Ct scan of blood vessels of chest with contrast	30	30	$965.13	$89.14
74176 Ct scan of abdomen and pelvis without contrast	26	25	$1115.62	$85.32
71260 Ct scan of chest with contrast	22	21	$641.55	$59.28
74177 Ct scan of abdomen and pelvis with contrast	22	21	$1208.36	$89.63
71250 Ct scan of chest without contrast	20	20	$583.55	$56.57
71260 Ct scan of chest with contrast	20	19	$667.00	$59.42
76770 Complete ultrasound scan behind abdominal cavity	16	16	$402.44	$36.00
93880 Ultrasound of both sides of head and neck blood flow	16	16	$671.56	$38.70
93971 Ultrasound scan of veins of one arm or leg or limited including assessment of compression and functional maneuvers	14	14	$355.00	$21.68
73030 X-ray of shoulder, minimum of 2 views	14	14	$112.86	$9.97
76770 Complete ultrasound scan behind abdominal cavity	13	13	$398.77	$36.23
78815 Nuclear medicine study from skull base to mid-thigh with ct scan	13	13	$1224.77	$117.58
73030 X-ray of shoulder, minimum of 2 views	13	13	$112.31	$9.35
74018 X-ray of abdomen, 1 view	12	12	$104.33	$8.95
71250 Ct scan of chest without contrast	12	11	$609.33	$56.00
76705 Limited ultrasound scan of abdomen	12	12	$325.67	$28.68
72125 Ct scan of upper spine without contrast	11	11	$604.64	$48.30

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
71045 X-ray of chest, 1 view	157	138	$96.00	$8.90
71046 X-ray of chest, 2 views	150	145	$116.00	$10.63
77067 Screening mammography	112	112	$232.69	$36.80
77063 Screening digital tomography of both breasts	87	87	$153.46	$29.00
77080 Dxa bone density measurement of hip, pelvis, spine	79	79	$143.00	$9.55
71046 X-ray of chest, 2 views	76	76	$116.00	$10.67
70450 Ct scan head or brain without contrast	74	73	$479.00	$40.35
74177 Ct scan of abdomen and pelvis with contrast	53	52	$1238.00	$88.78
77067 Screening mammography	50	50	$238.00	$36.80
77080 Dxa bone density measurement of hip, pelvis, spine	35	35	$143.00	$9.55
71275 Ct scan of blood vessels of chest with contrast	33	33	$882.00	$87.66
78815 Nuclear medicine study from skull base to mid-thigh with ct scan	28	28	$1191.00	$115.84
74176 Ct scan of abdomen and pelvis without contrast	28	28	$1155.00	$84.74
72125 Ct scan of upper spine without contrast	27	27	$639.00	$50.90
71260 Ct scan of chest with contrast	26	26	$682.00	$58.40
74177 Ct scan of abdomen and pelvis with contrast	25	25	$1238.00	$88.67
71260 Ct scan of chest with contrast	25	25	$682.00	$58.40
73502 X-ray of hip, 2-3 views	25	24	$138.00	$10.99
73030 X-ray of shoulder, minimum of 2 views	25	25	$112.32	$9.61
93971 Ultrasound scan of veins of one arm or leg or limited including assessment of compression and functional maneuvers	20	20	$235.00	$21.56
74018 X-ray of abdomen, 1 view	19	17	$96.00	$8.89
93880 Ultrasound of both sides of head and neck blood flow	18	18	$460.00	$38.40
76770 Complete ultrasound scan behind abdominal cavity	18	18	$392.00	$35.90
76642 Limited ultrasound scan of 1 breast	18	18	$272.22	$34.97
71250 Ct scan of chest without contrast	17	17	$618.00	$56.09
74230 Imaging for evaluation of swallowing function	17	17	$279.00	$25.95
77063 Screening digital tomography of both breasts	16	16	$158.00	$29.00
73564 X-ray of knee, 4 or more views	15	15	$144.00	$13.19
71250 Ct scan of chest without contrast	15	15	$618.00	$56.37
73560 X-ray of knee, 1-2 views	14	13	$98.57	$8.76
73560 X-ray of knee, 1-2 views	14	14	$92.00	$8.18
73610 X-ray of ankle, minimum of 3 views	14	13	$92.00	$8.55
76770 Complete ultrasound scan behind abdominal cavity	13	13	$392.00	$35.90
73564 X-ray of knee, 4 or more views	13	13	$129.23	$11.85
76705 Limited ultrasound scan of abdomen	12	12	$313.00	$28.34
G0279 Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066)	11	11	$166.00	$29.12
73110 X-ray of wrist, minimum of 3 views	11	11	$111.27	$9.31
73030 X-ray of shoulder, minimum of 2 views	11	11	$108.00	$9.27
72100 X-ray of lower and sacral spine, 2-3 views	11	11	$122.00	$10.59
73630 X-ray of foot, minimum of 3 views	11	11	$102.00	$8.21

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
71046 X-ray of chest, 2 views	182	170	$110.00	$10.53
71045 X-ray of chest, 1 view	177	150	$91.00	$8.85
77067 Screening mammography	118	118	$221.21	$36.76
71046 X-ray of chest, 2 views	115	115	$110.00	$10.66
77063 Screening digital tomography of both breasts	91	91	$145.88	$28.96
70450 Ct scan head or brain without contrast	66	66	$456.00	$40.72
74177 Ct scan of abdomen and pelvis with contrast	54	54	$1179.00	$88.94
77080 Dxa bone density measurement of hip, pelvis, spine	44	44	$136.00	$9.88
71275 Ct scan of blood vessels of chest with contrast	36	36	$840.00	$86.76
77067 Screening mammography	32	32	$222.47	$36.76
78815 Nuclear medicine study from skull base to mid-thigh with ct scan	30	29	$1134.00	$115.71
74176 Ct scan of abdomen and pelvis without contrast	28	28	$1100.00	$84.60
71250 Ct scan of chest without contrast	27	27	$588.00	$56.53
71260 Ct scan of chest with contrast	27	27	$649.00	$58.87
71250 Ct scan of chest without contrast	24	24	$588.00	$56.18
73030 X-ray of shoulder, minimum of 2 views	24	22	$102.00	$9.23
93880 Ultrasound of both sides of head and neck blood flow	24	24	$438.00	$38.40
73502 X-ray of hip, 2-3 views	24	23	$131.00	$11.00
73560 X-ray of knee, 1-2 views	22	20	$87.00	$8.19
76706 Ultrasound scan of abdominal aorta	21	21	$299.00	$26.65
73564 X-ray of knee, 4 or more views	19	17	$120.00	$11.58
93971 Ultrasound scan of veins of one arm or leg or limited including assessment of compression and functional maneuvers	19	19	$223.00	$21.56
73564 X-ray of knee, 4 or more views	19	18	$114.00	$11.00
73030 X-ray of shoulder, minimum of 2 views	18	18	$102.00	$9.22
71260 Ct scan of chest with contrast	17	17	$649.00	$58.50
73502 X-ray of hip, 2-3 views	17	16	$131.00	$10.98
74018 X-ray of abdomen, 1 view	17	17	$91.00	$8.90
74177 Ct scan of abdomen and pelvis with contrast	17	17	$1179.00	$88.84
72125 Ct scan of upper spine without contrast	16	16	$608.00	$51.22
74230 Imaging for evaluation of swallowing function	16	16	$265.00	$25.95
76705 Limited ultrasound scan of abdomen	13	13	$298.00	$27.33
72100 X-ray of lower and sacral spine, 2-3 views	12	12	$116.00	$10.98
74420 Imaging of urinary tract	12	12	$175.00	$17.28
74018 X-ray of abdomen, 1 view	11	11	$91.00	$8.88

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
71010 X-ray of chest, 1 view, front	185	147	$91.00	$8.90
71020 X-ray of chest, 2 views, front and side	185	173	$109.90	$10.60
71020 X-ray of chest, 2 views, front and side	108	106	$110.00	$10.52
G0202 Screening mammography, bilateral (2-view study of each breast), including computer-aided detection (cad) when performed	100	100	$207.47	$35.78
74177 Ct scan of abdomen and pelvis with contrast	68	60	$1122.00	$89.03
71260 Ct scan of chest with contrast	63	55	$618.00	$58.19
77063 Screening digital tomography of both breasts	58	58	$86.57	$28.33
77080 Dxa bone density measurement of hip, pelvis, spine	51	51	$129.00	$9.89
74177 Ct scan of abdomen and pelvis with contrast	50	49	$1122.00	$88.84
70450 Ct scan head or brain without contrast	33	32	$434.00	$41.10
74176 Ct scan of abdomen and pelvis without contrast	33	33	$1047.00	$85.15
71275 Ct scan of blood vessels of chest with contrast	32	32	$800.00	$88.94
71260 Ct scan of chest with contrast	25	25	$618.00	$58.89
74020 Imaging of abdomen	24	23	$133.00	$13.25
93880 Ultrasound of both sides of head and neck blood flow	23	23	$417.00	$38.52
73502 X-ray of hip, 2-3 views	22	20	$124.00	$10.98
78815 Nuclear medicine study from skull base to mid-thigh with ct scan	22	22	$1080.00	$116.49
74000 X-ray of abdomen, single view	21	19	$88.00	$8.89
72100 X-ray of lower and sacral spine, 2-3 views	21	21	$110.00	$11.01
71250 Ct scan of chest without contrast	20	20	$560.00	$49.20
93971 Ultrasound scan of veins of one arm or leg or limited including assessment of compression and functional maneuvers	20	20	$212.00	$21.55
73564 X-ray of knee, 4 or more views	19	18	$108.00	$10.32
73030 X-ray of shoulder, minimum of 2 views	18	17	$97.00	$9.22
76705 Limited ultrasound scan of abdomen	17	17	$283.00	$27.61
73502 X-ray of hip, 2-3 views	17	17	$124.00	$11.00
71250 Ct scan of chest without contrast	17	17	$560.00	$49.09
76705 Limited ultrasound scan of abdomen	16	16	$283.00	$28.86
78815 Nuclear medicine study from skull base to mid-thigh with ct scan	16	15	$1080.00	$116.47
76642 Limited ultrasound scan of 1 breast	15	13	$221.00	$33.14
74000 X-ray of abdomen, single view	14	14	$88.00	$8.91
73564 X-ray of knee, 4 or more views	14	14	$108.00	$11.01
73030 X-ray of shoulder, minimum of 2 views	14	14	$97.00	$9.24
73221 Mri scan of arm joint without contrast	14	13	$800.00	$66.28
74230 Imaging for evaluation of swallowing function	14	14	$252.00	$25.98
G0279 Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066)	12	12	$100.67	$29.44
73721 Mri scan of leg joint without contrast	12	12	$800.00	$65.91
G0202 Screening mammography, bilateral (2-view study of each breast), including computer-aided detection (cad) when performed	12	12	$215.00	$35.78
G0206 Diagnostic mammography, including computer-aided detection (cad) when performed; unilateral	11	11	$225.00	$37.85
76770 Complete ultrasound scan behind abdominal cavity	11	11	$355.00	$35.96
73630 X-ray of foot, minimum of 3 views	11	11	$92.00	$8.21

Medical Specialties & State Licenses

Radiology - Diagnostic Radiology Primary Specialty

NUCC Taxonomy Code: 2085R0202X

State License WI 29727

A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease.

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID

31529000 (WI)

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

16 Associated Practitioners

Dr. Stephanus Macrander , MD

Radiology - Diagnostic Radiology

NPI 1033153853

Doctor of Medicine (M.D.)

Dr. Maher Salahi , MD

Radiology - Vascular & Interventional Radiology

NPI 1124317474

Doctor of Medicine (M.D.)

Dr. Stephen Bejvan , MD

Radiology - Diagnostic Radiology

NPI 1356379762

Doctor of Medicine (M.D.)

Dr. Keyvan Gharabeighlou , DO

Radiology - Diagnostic Radiology

NPI 1376588202

Doctor of Osteopathic Medicine (D.O.)

Dr. John Sowin , MD

Radiology - Diagnostic Radiology

NPI 1396772455

Doctor of Medicine (M.D.)

Dr. Fred Panzer , MD

Radiology - Diagnostic Radiology

NPI 1447296744

Doctor of Medicine (M.D.)

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

6 Historical Events

✅

NPI Profile Active April 03, 2008

NPI status registered as active in NPPES database

📍

Updated Practice Location April 03, 2008

Registered at 2500 E ENTERPRISE AVE, UNIT C, APPLETON, WI 54913 (Tel: 9207395642)

📍

Updated Business Mailing Address April 03, 2008

Registered at 2500 E ENTERPRISE AVE, UNIT C, APPLETON, WI 54913 (Tel: 9207395642)

👤

Provider Name / Credentials Updated April 03, 2008

Recorded as GREGORY KNUDSON, M.D.

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) April 03, 2008

Radiology (License #29727 in WI)

🟢

Initial NPI Registration & Enumeration June 16, 2006

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

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NPI Administrative Meta

NPI Number: 1457395519

Entity Type:

Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)

Enumeration Date: June 16, 2006

Last Update: April 03, 2008

Sole Proprietor: No

Update or Correct Profile

Mailing Address

2500 E Enterprise Ave, Unit C

Appleton, WI 54913

Phone: 9207395642

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).

⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.