IndividualActive
John Gray, MD
NPI 1639284623 · Family Medicine Physician · Depere, WI
John Gray, MD is a Family Medicine Physician provider in Depere, WI (NPI 1639284623).
Provider details
- NPI number
- 1639284623
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 27644 (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
1881 Chicago St
Depere, WI 54115
Phone: (920) 403-8000
Fax: (920) 403-8202
Approximate (ZIP-level) locationGet directions
Mailing address
3301 W Forest Home Ave
Milwaukee, WI 53215-2843
Registry dates
- Enumerated
- 2006-08-20
- Last updated
- 2023-03-07
Frequently asked questions
- What is John Gray's NPI number?
- John Gray's National Provider Identifier (NPI) is 1639284623, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Gray's specialty?
- John Gray is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Gray located?
- John Gray's practice location on file with NPPES is 1881 Chicago St, Depere, WI 54115.
- What is John Gray's phone number?
- The practice phone number listed in the NPPES registry for John Gray is (920) 403-8000.
- Is John Gray's NPI active?
- Yes — John Gray's NPI (1639284623) is active in the NPPES registry as of the last update on 2023-03-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.