Mark Rassier, MD
NPI 1063514164 · Nephrology Physician · Minocqua, WI
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Rassier, MD is a Nephrology Physician provider in Minocqua, WI (NPI 1063514164).
Provider details
- NPI number
- 1063514164
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 36111 (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
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
- 2006-09-01
- Last updated
- 2007-07-30
Frequently asked questions
- What is Mark Rassier's NPI number?
- Mark Rassier's National Provider Identifier (NPI) is 1063514164, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Rassier's specialty?
- Mark Rassier is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Rassier located?
- Mark Rassier's practice location on file with NPPES is 9601 Townline Rd, Minocqua, WI 54548.
- What is Mark Rassier's phone number?
- The practice phone number listed in the NPPES registry for Mark Rassier is (715) 358-1000.
- Does Mark Rassier accept Medicare?
- Mark Rassier is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Rassier's NPI active?
- Yes — Mark Rassier's NPI (1063514164) is active in the NPPES registry as of the last update on 2007-07-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.