Gregory Knudson, M.D.
NPI 1457395519 · Diagnostic Radiology Physician · Appleton, WI
Gregory Knudson, M.D. is a Diagnostic Radiology Physician provider in Appleton, WI (NPI 1457395519).
Provider details
- NPI number
- 1457395519
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 29727 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-16
- Last updated
- 2008-04-03
Frequently asked questions
- What is Gregory Knudson's NPI number?
- Gregory Knudson's National Provider Identifier (NPI) is 1457395519, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Knudson's specialty?
- Gregory Knudson is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Knudson located?
- Gregory Knudson's practice location on file with NPPES is 2500 E Enterprise Ave, Appleton, WI 54913.
- What is Gregory Knudson's phone number?
- The practice phone number listed in the NPPES registry for Gregory Knudson is (920) 739-5642.
- Is Gregory Knudson's NPI active?
- Yes — Gregory Knudson's NPI (1457395519) is active in the NPPES registry as of the last update on 2008-04-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.