William Dernbach, MD
NPI 1255431631 · Internal Medicine Physician · Wausau, WI
William Dernbach, MD is a Internal Medicine Physician provider in Wausau, WI (NPI 1255431631).
Provider details
- NPI number
- 1255431631
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 18092 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
- 2006-09-25
- Last updated
- 2025-09-11
Frequently asked questions
- What is William Dernbach's NPI number?
- William Dernbach's National Provider Identifier (NPI) is 1255431631, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Dernbach's specialty?
- William Dernbach is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Dernbach located?
- William Dernbach's practice location on file with NPPES is 2727 Plaza Drive, Wausau, WI 54401.
- What is William Dernbach's phone number?
- The practice phone number listed in the NPPES registry for William Dernbach is (715) 847-3271.
- Is William Dernbach's NPI active?
- Yes — William Dernbach's NPI (1255431631) is active in the NPPES registry as of the last update on 2025-09-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.