John Knudsen, M.D.
NPI 1780664268 · Diagnostic Radiology Physician · Rochester, MN
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Knudsen, M.D. is a Diagnostic Radiology Physician provider in Rochester, MN (NPI 1780664268).
Provider details
- NPI number
- 1780664268
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 47774 (AZ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
90 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Ct Scan of Abdomen and Pelvis With Contrast74177 | 90 | $322 |
Typical Medicare-allowed amounts for these services range $322–$322 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Additional practice locations (1)
- 13400 E Shea BlvdScottsdale, AZ 85259-5499Phone: (480) 301-8000
Registry dates
- Enumerated
- 2006-01-19
- Last updated
- 2023-01-06
- Certified
- 2023-01-06
Frequently asked questions
- What is John Knudsen's NPI number?
- John Knudsen's National Provider Identifier (NPI) is 1780664268, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Knudsen's specialty?
- John Knudsen is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is John Knudsen located?
- John Knudsen's practice location on file with NPPES is 200 1st St Sw, Rochester, MN 55905-0001.
- What is John Knudsen's phone number?
- The practice phone number listed in the NPPES registry for John Knudsen is (507) 284-2511.
- Does John Knudsen accept Medicare?
- John Knudsen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Knudsen's NPI active?
- Yes — John Knudsen's NPI (1780664268) is active in the NPPES registry as of the last update on 2023-01-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.