William Koller, MD
NPI 1215977947 · Obstetrics & Gynecology Physician · Madison, WI
William Koller, MD is a Obstetrics & Gynecology Physician provider in Madison, WI (NPI 1215977947).
Provider details
- NPI number
- 1215977947
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 19201-020 (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
- 2006-06-08
- Last updated
- 2010-09-07
Frequently asked questions
- What is William Koller's NPI number?
- William Koller's National Provider Identifier (NPI) is 1215977947, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Koller's specialty?
- William Koller is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is William Koller located?
- William Koller's practice location on file with NPPES is 1821 S Stoughton Rd, Madison, WI 53716-2257.
- What is William Koller's phone number?
- The practice phone number listed in the NPPES registry for William Koller is (608) 260-6000.
- Is William Koller's NPI active?
- Yes — William Koller's NPI (1215977947) is active in the NPPES registry as of the last update on 2010-09-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.