Fourone2020 PLLC
NPI 1538646930 · Optometrist · West St Paul, MN
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Fourone2020 PLLC is a Optometrist organization in West St Paul, MN (NPI 1538646930).
Provider details
- NPI number
- 1538646930
- Entity type
- Organization
- Primary specialty
- OptometristEye and Vision Services Providers
- Organization subpart
- No
- Authorized official
- Greg Markeson, Owner/Optometrist(612) 812-4691
- License
- 2557 (MN)
Specialties & taxonomies
Eye and Vision Services Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
7 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
Other names (DBA / former)
- Doing business as
- Dba Greg B Markeson OD
Registry dates
- Enumerated
- 2018-07-27
- Last updated
- 2018-10-24
Frequently asked questions
- What is Fourone2020 PLLC's NPI number?
- Fourone2020 PLLC's National Provider Identifier (NPI) is 1538646930, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Fourone2020 PLLC?
- Fourone2020 PLLC is classified in the NPPES registry as Optometrist (Eye and Vision Services Providers).
- Where is Fourone2020 PLLC located?
- Fourone2020 PLLC's practice location on file with NPPES is 1750 Robert St S, West St Paul, MN 55118-3919.
- What is Fourone2020 PLLC's phone number?
- The practice phone number listed in the NPPES registry for Fourone2020 PLLC is (651) 306-0412.
- Does Fourone2020 PLLC accept Medicare?
- Fourone2020 PLLC is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Fourone2020 PLLC?
- The authorized official listed on Fourone2020 PLLC's NPPES record is Greg Markeson, Owner/Optometrist. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Fourone2020 PLLC's NPI active?
- Yes — Fourone2020 PLLC's NPI (1538646930) is active in the NPPES registry as of the last update on 2018-10-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.