Doctor profile · Federal record
Dr. John Knudsen, M.D.
Diagnostic Radiology Physician (CMS: Diagnostic Radiology) · Diagnostic Radiology Physician · Diagnostic Ultrasound Physician · Rochester, MN
- NPI 1780664268
- Accepts Medicare
- 40 yrs in practice
- Licensed in 2 states
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
200 1St St Sw
Rochester, MN 559050001
(507) 284-2511 - Additional location
-
13400 E Shea Blvd
Scottsdale, AZ 852595499
(480) 301-8000
Credentials & registration
- NPI registered
- January 2006 — 20 yrs on file
- Profile last updated
- January 6, 2023
- Year of graduation
- 1986 — 40 yrs since
- Specialty taxonomy
- 2085R0202X — NUCC code
- State licenses (2)
- Minnesota #30868 · Arizona #47774
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1780664268. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
3,612
Distinct HCPCS
4
Medicare allowed
$17,281
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
Q9967 |
Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml | 3,552 | 24 | $0 | |
74177 |
Ct scan of abdomen and pelvis with contrast | 37 | 37 | $322 | |
76700 |
Complete ultrasound scan of abdomen | 12 | 12 | $114 | |
74183 |
Mri scan of abdomen before and after contrast | 11 | 11 | $315 |
In context: peer comparison
Among 127 peers in Rochester Diagnostic Radiology Physician, average services per provider: 637. This provider delivers 5.7× the peer median.Frequently asked questions
What is Dr. John Knudsen's medical specialty?
Dr. John Knudsen practices Diagnostic Radiology Physician in Rochester, MN.
Where does Dr. John Knudsen practice?
Dr. John Knudsen practices at 200 1St St Sw, Rochester, MN 559050001. Office phone: 5072842511.
What is Dr. John Knudsen's NPI?
Dr. John Knudsen's National Provider Identifier (NPI) is 1780664268, issued by NPPES.
Does Dr. John Knudsen accept Medicare assignment?
Yes. Dr. John Knudsen accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. John Knudsen commonly perform?
Top Medicare-reported procedures in 2023: Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml (HCPCS Q9967); Ct scan of abdomen and pelvis with contrast (HCPCS 74177); Complete ultrasound scan of abdomen (HCPCS 76700). Source: CMS Medicare Physician & Other Practitioners file.