IndividualActive
Gary Janssen, MD
NPI 1063527539 · Family Medicine Physician · Greenwood, WI
Gary Janssen, MD is a Family Medicine Physician provider in Greenwood, WI (NPI 1063527539).
Provider details
- NPI number
- 1063527539
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 22408 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(90/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 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
102 W Cannery St
Greenwood, WI 54437
Phone: (715) 267-6600
Street-level locationGet directions
Mailing address
1000 N Oak Ave
Marshfield, WI 54449-5777
Registry dates
- Enumerated
- 2006-08-21
- Last updated
- 2007-07-08
Frequently asked questions
- What is Gary Janssen's NPI number?
- Gary Janssen's National Provider Identifier (NPI) is 1063527539, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gary Janssen's specialty?
- Gary Janssen is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Gary Janssen located?
- Gary Janssen's practice location on file with NPPES is 102 W Cannery St, Greenwood, WI 54437.
- What is Gary Janssen's phone number?
- The practice phone number listed in the NPPES registry for Gary Janssen is (715) 267-6600.
- Is Gary Janssen's NPI active?
- Yes — Gary Janssen's NPI (1063527539) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.