1. Home
  2. Directory
  3. Michigan
  4. Okemos
  5. Optometrist
  6. NPI Profile

DIANA STEWART O.D.
NPI 1104129626
Optometrist in Okemos, MI

Active since December 06, 2010PECOS Enrolled
2333 JOLLY RD, OKEMOS, MI 48864(517) 381-2000 Get Directions Write a Review

NPPES record last updated: September 27, 2021. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Sep 27, 2021, Nov 1, 2019 (2 updates tracked since 2019).

About Diana Stewart O.d. NPPES

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

DIANA STEWART O.D. (NPI 1104129626) is an individual optometrist in Okemos, Michigan, licensed in Michigan (4901004614) and active in the NPI registry since December 2010. She is enrolled in Medicare PECOS and maintains a secondary practice location in Lansing.

NPPES Registry Identity

NPI1104129626
Entity TypeIndividualFemale
Primary Taxonomy152W00000X
Provider Legal NameDIANA STEWARTCredential: O.D.
Location Address2333 JOLLY RDOkemos, MI 48864-3541
Mailing Address5210 Twinging DrOkemos, MI 48864-2977 · (908) 305-2514
Phone(517) 381-2000
Sole ProprietorNo
Enumeration DateDecember 6, 2010
Last NPPES UpdateSeptember 27, 20212 updates tracked since enumeration
NPPES CertifiedSeptember 27, 2021
✔ NPI 1104129626 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 MI · 4901004614
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.
2333 JOLLY RD, Okemos, MI 48864
Open in Google Maps ↗

Other Names 1

Former Name (1)Diana Colon O.d.

Secondary Practice Location 1

Location 15403 W Saginaw HwyLansing, MI 48917-1918 · Phone (517) 886-0222

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Blue Care Network of Michigan, Blue Cross and Blue Shield of Louisiana and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Diana Stewart O.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Diana Stewart reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Bennett Optometry LLC
Same address
Optometrist
2333 JOLLY RD
Okemos, MI 48864
  • Reassigned Medicare billing, Michigan enrollment
  • 24 clinicians in this Medicare group
NPI 1427621945 (517) 381-2000

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

Areas of Expertise CMS Part B claims

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient complete exam of visual system 92014
An established patient complete exam of the visual system involves a thorough check of your eyes and vision. It assesses eye health, checks for diseases, and measures your ability to see clearly at different distances. It's a routine, non-invasive procedure.
21 services21 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 48864 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$126.15 typical visit price
range $54.34 – $166.68
Typical copayment $31.53 (range $13.58 – $41.67)
Most-billed visit code 99204
Established Patient
$68.07 typical visit price
range $17.09 – $135.40
Typical copayment $17.01 (range $4.27 – $33.85)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 3

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

GREGORY D POPOWITZ PC
Optometrist
2333 JOLLY RD
OKEMOS, MI 48864
Ingham County (517) 381-2000
ELLEN MARY DOHR OD
Optometrist
2333 JOLLY RD
OKEMOS, MI 48864
Ingham County (517) 381-2000
BENNETT OPTOMETRY LLC
Optometrist
2333 JOLLY RD
OKEMOS, MI 48864
Ingham County (517) 381-2000

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 Diana Stewart's NPI number?

The NPI number for Diana Stewart is 1104129626. It was assigned to this individual provider in the NPPES registry on December 6, 2010. The provider is also known as Diana Colon O.D..

Where is Diana Stewart located?

Diana Stewart practices at 2333 Jolly Rd, Okemos, MI 48864. The listed phone number is (517) 381-2000.

What is Diana Stewart's specialty?

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

Is Diana Stewart enrolled in Medicare?

Yes. Diana Stewart is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Diana Stewart's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Diana Stewart reassigns Medicare benefits to Bennett Optometry LLC (Okemos, MI). The 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 Diana Stewart's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Diana Stewart accept?

Health plans from Anthem Blue Cross and Blue Shield, Blue Care Network of Michigan, Blue Cross Blue Shield of Michigan Mutual Insurance Company, Blue Cross Blue Shield of Wyoming and Blue Cross and Blue Shield of Louisiana and 4 other insurers list Diana Stewart 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 Diana Stewart was last updated on September 27, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.