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JOHN E WARREN OD SC
NPI 1821113697
Optometrist in Mt Pleasant, WI

Active since March 20, 2007
1139 S SUNNYSLOPE DR STE 203, MT PLEASANT, WI 53406(272) 752-2020(262) 292-5019 Get Directions Write a Review

NPPES record last updated: January 7, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Jan 7, 2026, Dec 17, 2024 (2 updates tracked since 2024).

About John E Warren Od Sc NPPES

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

JOHN E WARREN OD SC (NPI 1821113697), doing business as Warren Eye Care Center Inc, is a healthcare organization registered as an optometrist in Mt Pleasant, Wisconsin and active in the NPI registry since March 2007. The organization lists John E Warren, Owner, as its authorized official.

NPPES Registry Identity

NPI1821113697
Entity TypeOrganization
Primary Taxonomy152W00000X
Legal Business NameJOHN E WARREN OD SC
Location Address1139 S SUNNYSLOPE DR STE 203Mt Pleasant, WI 53406-3998
Mailing Address1139 S Sunnyslope Dr Ste 203Mt Pleasant, WI 53406-3998 · (272) 752-2020 · Fax (262) 292-5019
Phone(272) 752-2020
Fax(262) 292-5019
Organization SubpartNo
Authorized OfficialJohn E WarrenOwner · (262) 752-2020
Enumeration DateMarch 20, 2007
Last NPPES UpdateJanuary 7, 20262 updates tracked since enumeration
NPPES CertifiedJanuary 7, 2026
✔ NPI 1821113697 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 WI · 2527
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.
1139 S SUNNYSLOPE DR STE 203, Mt Pleasant, WI 53406
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Other Names 1

Doing Business AsWarren Eye Care Center Inc

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, CareSource (Common Ground Healthcare).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)

John E Warren Od Sc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

2

Medicare enrollment records show 2 clinicians reassign Medicare billing to John E Warren Od Sc, which bills Medicare for the services they deliver. Of these, 1 practice at this address and 2 within 10 miles. They are listed nearest first.

Clinicians, nearest first (2)

John Warren, OD
Optometry
NPI 1609868124
1139 S SUNNYSLOPE DR STE 203
Mt Pleasant, WI 53406
(262) 752-2020
✔ PECOS✔ Accepts MedicareSame address
Katelyn Steen, OD
Optometry
NPI 1922655158
13330 WASHINGTON AVE
Mount Pleasant, WI 53177
(262) 267-8161
✔ PECOS✔ Accepts Medicare4.5 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 John E Warren Od Sc's NPI number?

The NPI number for John E Warren Od Sc is 1821113697. It was assigned to this organization in the NPPES registry on March 20, 2007. The provider is doing business as Warren Eye Care Center Inc.

Where is John E Warren Od Sc located?

John E Warren Od Sc is located at 1139 S Sunnyslope Dr Ste 203, Mt Pleasant, WI 53406. The listed phone number is (272) 752-2020.

What is John E Warren Od Sc's specialty?

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

Is John E Warren Od Sc enrolled in Medicare?

Yes. John E Warren Od Sc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through John E Warren Od Sc?

According to the CMS Revalidation Reassignment List (October 2026 release), 2 clinicians, all in Optometry, reassign their Medicare billing to John E Warren Od Sc. 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. Of these, 1 practice at this address and 2 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

What insurance does John E Warren Od Sc accept?

Health plans from Anthem Blue Cross and Blue Shield and CareSource (Common Ground Healthcare) list John E Warren Od Sc 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 John E Warren Od Sc was last updated on January 7, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 months 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.