Marc Ellwein, PA-C
NPI 1710914478 · Physician Assistant · Sioux Falls, SD
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marc Ellwein, PA-C is a Physician Assistant provider in Sioux Falls, SD (NPI 1710914478).
Provider details
- NPI number
- 1710914478
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Male
- Sole proprietor
- No
- License
- 0178 (SD)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
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
- 2006-06-27
- Last updated
- 2022-04-18
- Certified
- 2022-04-18
Frequently asked questions
- What is Marc Ellwein's NPI number?
- Marc Ellwein's National Provider Identifier (NPI) is 1710914478, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marc Ellwein's specialty?
- Marc Ellwein is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Marc Ellwein located?
- Marc Ellwein's practice location on file with NPPES is 2100 S Marion Rd, Sioux Falls, SD 57106-3646.
- What is Marc Ellwein's phone number?
- The practice phone number listed in the NPPES registry for Marc Ellwein is (605) 322-5180.
- Does Marc Ellwein accept Medicare?
- Marc Ellwein is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marc Ellwein's NPI active?
- Yes — Marc Ellwein's NPI (1710914478) is active in the NPPES registry as of the last update on 2022-04-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.