Galen Hasler, MD
NPI 1356486591 · Hematology & Oncology Physician · Madison, WI
Galen Hasler, MD is a Hematology & Oncology Physician provider in Madison, WI (NPI 1356486591).
Provider details
- NPI number
- 1356486591
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 50861-20 (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
- 2007-02-21
- Last updated
- 2012-02-24
Frequently asked questions
- What is Galen Hasler's NPI number?
- Galen Hasler's National Provider Identifier (NPI) is 1356486591, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Galen Hasler's specialty?
- Galen Hasler is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Galen Hasler located?
- Galen Hasler's practice location on file with NPPES is 350 S Hamilton St, Madison, WI 53703-3861.
- What is Galen Hasler's phone number?
- The practice phone number listed in the NPPES registry for Galen Hasler is (608) 206-5218.
- Is Galen Hasler's NPI active?
- Yes — Galen Hasler's NPI (1356486591) is active in the NPPES registry as of the last update on 2012-02-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.