DBA GREG B MARKESON OD
NPI 1538646930
Optometrist in West St Paul, MN

Q: What is Fourone2020 PLLC's NPI number?

The NPI number for Fourone2020 PLLC is 1538646930. It was assigned to this organization in the NPPES registry on July 27, 2018. The provider is doing business as Dba Greg B Markeson Od.

Q: What is Fourone2020 PLLC's specialty?

The primary specialty registered for this NPI is Optometrist with taxonomy code 152W00000X.

Q: When was this NPI record last updated?

The NPPES record for Fourone2020 PLLC was last updated on October 24, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since July 27, 2018

1750 ROBERT ST S, WEST ST PAUL, MN 55118(651) 306-0412(651) 306-0414 Get Directions Write a Review

NPPES record last updated: October 24, 2018. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Oct 24, 2018, Jul 27, 2018 (2 updates tracked since 2018).

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About Dba Greg B Markeson Od NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DBA GREG B MARKESON OD (NPI 1538646930) is a healthcare organization registered as an optometrist in West St Paul, Minnesota and active in the NPI registry since July 2018. The organization lists Greg B Markeson, Owner/optometrist, as its authorized official.

NPPES Registry Identity

NPI1538646930

Entity TypeOrganization

Primary Taxonomy152W00000X

Legal Business NameFOURONE2020 PLLC

Location Address1750 ROBERT ST SWest St Paul, MN 55118-3919

Mailing Address11146 Sweetwater PathWoodbury, MN 55129-5293 · (612) 812-4691

Phone(651) 306-0412

Fax(651) 306-0414

Organization SubpartNo

Authorized OfficialGreg B MarkesonOwner/optometrist · (612) 812-4691

Enumeration DateJuly 27, 2018

Last NPPES UpdateOctober 24, 20182 updates tracked since enumeration

✔ NPI 1538646930 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOptometristEye and Vision Services Providers

Taxonomy Code152W00000X

License✔ Licensed in MN · 2557

Definition

Doctors of optometry (ODs) are the primary health care professionals for the eye. Optometrists examine, diagnose, treat, and manage diseases, injuries, and disorders of the visual system, the eye, and associated structures as well as identify related systemic conditions affecting the eye. An optometrist has completed pre-professional undergraduate education in a college or university and four years of professional education at a college of optometry, leading to the doctor of optometry (O.D.) degree. Some optometrists complete an optional residency in a specific area of practice. Optometrists are eye health care professionals state-licensed to diagnose and treat diseases and disorders of the eye and visual system.

1750 ROBERT ST S, West St Paul, MN 55118

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Other Names 1

Doing Business AsDba Greg B Markeson Od

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dba Greg B Markeson Od is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Dba Greg B Markeson Od, which bills Medicare for the services this clinician delivers.

Clinician (1)

Greg Markeson, OD

Optometry

NPI 1205917473

1750 ROBERT ST S
West St Paul, MN 55118

(651) 306-0412

✔ PECOS0.1 mi

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Fourone2020 PLLC's NPI number?

The NPI number for Fourone2020 PLLC is 1538646930. It was assigned to this organization in the NPPES registry on July 27, 2018. The provider is doing business as Dba Greg B Markeson Od.

Where is Fourone2020 PLLC located?

Fourone2020 PLLC is located at 1750 Robert St S, West St Paul, MN 55118. The listed phone number is (651) 306-0412.

What is Fourone2020 PLLC's specialty?

The primary specialty registered for this NPI is Optometrist with taxonomy code 152W00000X.

Is Fourone2020 PLLC enrolled in Medicare?

Yes. Fourone2020 PLLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Fourone2020 PLLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Optometry) reassigns their Medicare billing to Fourone2020 PLLC. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

What insurance does Fourone2020 PLLC accept?

Health plans from Anthem Blue Cross and Blue Shield, Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma and Blue Cross and Blue Shield of Texas list Fourone2020 PLLC as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Fourone2020 PLLC was last updated on October 24, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.