Gary Ludwig, MD
NPI 1154302578 · Anatomic Pathology & Clinical Pathology Physician · Neenah, WI
Gary Ludwig, MD is a Anatomic Pathology & Clinical Pathology Physician provider in Neenah, WI (NPI 1154302578).
Provider details
- NPI number
- 1154302578
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology & Clinical Pathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 29732-020 (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
- 2005-11-11
- Last updated
- 2014-06-04
Frequently asked questions
- What is Gary Ludwig's NPI number?
- Gary Ludwig's National Provider Identifier (NPI) is 1154302578, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gary Ludwig's specialty?
- Gary Ludwig is listed in the NPPES registry with a primary specialty of Anatomic Pathology & Clinical Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is Gary Ludwig located?
- Gary Ludwig's practice location on file with NPPES is 130 2nd St, Neenah, WI 54956-2883.
- What is Gary Ludwig's phone number?
- The practice phone number listed in the NPPES registry for Gary Ludwig is (920) 729-2500.
- Is Gary Ludwig's NPI active?
- Yes — Gary Ludwig's NPI (1154302578) is active in the NPPES registry as of the last update on 2014-06-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.