Grant Karlsson Ellifson
NPI 1659076719 · Dentist · Milwaukee, WI
Enrolled with Medicare as Order and Referring Only - Dentist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Grant Karlsson Ellifson is a Dentist provider in Milwaukee, WI (NPI 1659076719).
Provider details
- NPI number
- 1659076719
- Entity type
- Individual
- Primary specialty
- DentistDental Providers
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Dental Providers
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
3 yrs in NPPES registry
- Profile completeness33% of score
83% of core fields populated
- Practice footprint20% of score
2 documented practice locations
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$19 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 3434 E Washington AveMadison, WI 53704-4155Phone: (608) 443-5482
Registry dates
- Enumerated
- 2023-03-30
- Last updated
- 2024-06-21
- Certified
- 2024-06-21
Frequently asked questions
- What is Grant Karlsson Ellifson's NPI number?
- Grant Karlsson Ellifson's National Provider Identifier (NPI) is 1659076719, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Grant Karlsson Ellifson's specialty?
- Grant Karlsson Ellifson is listed in the NPPES registry with a primary specialty of Dentist (Dental Providers).
- Where is Grant Karlsson Ellifson located?
- Grant Karlsson Ellifson's practice location on file with NPPES is 1801 W Wisconsin Ave, Milwaukee, WI 53233-2186.
- What is Grant Karlsson Ellifson's phone number?
- The practice phone number listed in the NPPES registry for Grant Karlsson Ellifson is (608) 422-0516.
- Does Grant Karlsson Ellifson accept Medicare?
- Grant Karlsson Ellifson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Grant Karlsson Ellifson's NPI active?
- Yes — Grant Karlsson Ellifson's NPI (1659076719) is active in the NPPES registry as of the last update on 2024-06-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.