Gareth Hattersley
NPI 1992238265 · Internal Medicine Physician · Milwaukee, WI
Gareth Hattersley is a Internal Medicine Physician provider in Milwaukee, WI (NPI 1992238265).
Provider details
- NPI number
- 1992238265
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
9 yrs in NPPES registry
- Profile completeness38% of score
83% 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
- 2017-04-04
- Last updated
- 2020-05-18
- Certified
- 2020-05-18
Frequently asked questions
- What is Gareth Hattersley's NPI number?
- Gareth Hattersley's National Provider Identifier (NPI) is 1992238265, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gareth Hattersley's specialty?
- Gareth Hattersley is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Gareth Hattersley located?
- Gareth Hattersley's practice location on file with NPPES is 9200 W Wisconsin Ave, Milwaukee, WI 53226-3522.
- What is Gareth Hattersley's phone number?
- The practice phone number listed in the NPPES registry for Gareth Hattersley is (414) 805-3666.
- Is Gareth Hattersley's NPI active?
- Yes — Gareth Hattersley's NPI (1992238265) is active in the NPPES registry as of the last update on 2020-05-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.