Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

ALISON YITING OU OD
NPI 1144054297
Optometrist in Baltimore, MD

Q: What is Alison Ou's NPI number?

The NPI number for Alison Ou is 1144054297. It was assigned to this individual provider in the NPPES registry on August 30, 2024.

Q: What is Alison Ou'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 Alison Ou was last updated on July 9, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 58 days 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 August 30, 2024PECOS Enrolled

4940 EASTERN AVE, BALTIMORE, MD 21224(410) 550-5568 Get Directions Write a Review

NPPES record last updated: July 9, 2026. Verified against the NPPES registry weekly; last sync: August 30, 2026.

On this page

About Alison Yiting Ou Od NPPES

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

ALISON YITING OU OD (NPI 1144054297) is an individual optometrist in Baltimore, Maryland, licensed in Maryland (TA3146) and active in the NPI registry since August 2024. She is enrolled in Medicare PECOS and maintains a secondary practice location in Chicago.

NPPES Registry Identity

NPI1144054297

Entity TypeIndividualFemale

Primary Taxonomy152W00000X

Provider Legal NameALISON YITING OUCredential: OD

Location Address4940 EASTERN AVEBaltimore, MD 21224-2735

Mailing Address6201 Greenleigh AveMiddle River, MD 21220-2004 · (410) 933-6423

Phone(410) 550-5568

Sole ProprietorNo

Enumeration DateAugust 30, 2024

Last NPPES UpdateJuly 9, 2026

NPPES CertifiedJuly 9, 2026

✔ NPI 1144054297 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOptometristEye and Vision Services Providers

Taxonomy Code152W00000X

Licenses✔ Licensed in MD · TA3146✔ Licensed in IL · 046.011916

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.

4940 EASTERN AVE, Baltimore, MD 21224

Open in Google Maps ↗

Secondary Practice Location 1

Location 15301 N Clark StChicago, IL 60640-2113 · Phone (773) 232-0448

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Providence Health Plan.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Alison Yiting Ou Od 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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 21224 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

$139.05 typical visit price

range $60.73 – $183.44

Typical copayment $34.76 (range $15.18 – $45.86)

Most-billed visit code 99204

Established Patient

$75.47 typical visit price

range $19.60 – $149.17

Typical copayment $18.86 (range $4.90 – $37.29)

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 20

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

DR. SUSRUTHA KOTWAL MD

Internal Medicine

4940 EASTERN AVE, MFL BLDG, WEST TOWER, 6TH FLOOR
BALTIMORE, MD 21224

Baltimore City (410) 550-5018

DR. SAMANTHA A WOLFE MD

Otolaryngology