Mark Hollister, M.D.
NPI 1588659171 · Diagnostic Radiology Physician · Waukesha, WI
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Hollister, M.D. is a Diagnostic Radiology Physician provider in Waukesha, WI (NPI 1588659171).
Provider details
- NPI number
- 1588659171
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- License
- 38554-020 (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
- 2005-09-20
- Last updated
- 2007-07-08
Frequently asked questions
- What is Mark Hollister's NPI number?
- Mark Hollister's National Provider Identifier (NPI) is 1588659171, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Hollister's specialty?
- Mark Hollister is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Hollister located?
- Mark Hollister's practice location on file with NPPES is 725 American Ave, Waukesha, WI 53188-5031.
- What is Mark Hollister's phone number?
- The practice phone number listed in the NPPES registry for Mark Hollister is (262) 928-2400.
- Does Mark Hollister accept Medicare?
- Mark Hollister is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Hollister's NPI active?
- Yes — Mark Hollister's NPI (1588659171) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.