Michael Sergi, MD
NPI 1811004005 · Internal Medicine Physician · Fond Du Lac, WI
Michael Sergi, MD is a Internal Medicine Physician provider in Fond Du Lac, WI (NPI 1811004005).
Provider details
- NPI number
- 1811004005
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 27415 (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
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
Mailing address
Registry dates
- Enumerated
- 2006-08-24
- Last updated
- 2023-03-07
Frequently asked questions
- What is Michael Sergi's NPI number?
- Michael Sergi's National Provider Identifier (NPI) is 1811004005, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Sergi's specialty?
- Michael Sergi is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Sergi located?
- Michael Sergi's practice location on file with NPPES is 210 Wisconsin American Dr, Fond Du Lac, WI 54935.
- What is Michael Sergi's phone number?
- The practice phone number listed in the NPPES registry for Michael Sergi is (920) 907-7000.
- Is Michael Sergi's NPI active?
- Yes — Michael Sergi's NPI (1811004005) 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.