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

DR. WILLIAM CHRISTOPHER OU MD
NPI 1609454388
Radiology - Diagnostic Radiology in Saint Louis, MO

Active since April 01, 2021PECOS Enrolled
510 S KINGSHIGHWAY BLVD, DEPT RADIOLOGY, SAINT LOUIS, MO 63110(314) 362-7200(314) 747-4189 Get Directions Write a Review

NPPES record last updated: July 7, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Jul 7, 2026, Jun 2, 2026, Apr 1, 2021 (3 updates tracked since 2021).

About Dr. William Christopher Ou Md NPPES

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

DR. WILLIAM CHRISTOPHER OU MD (NPI 1609454388) is an individual diagnostic radiology provider in Saint Louis, Missouri, licensed in Missouri (2023012841) and active in the NPI registry since April 2021. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1609454388
Entity TypeIndividualMale
Primary Taxonomy2085R0202X
Provider Legal NameDR. WILLIAM CHRISTOPHER OUCredential: MD
Location Address510 S KINGSHIGHWAY BLVD, DEPT RADIOLOGYSaint Louis, MO 63110-1016
Mailing AddressPo Box 7412011Chicago, IL 60674-2011 · (314) 362-7200 · Fax (314) 747-4189
Phone(314) 362-7200
Fax(314) 747-4189
Sole ProprietorNo
Enumeration DateApril 1, 2021
Last NPPES UpdateJuly 7, 20263 updates tracked since enumeration
NPPES CertifiedJune 2, 2026
✔ NPI 1609454388 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyRadiology · Diagnostic RadiologyAllopathic & Osteopathic Physicians
Taxonomy Code2085R0202X
License✔ Licensed in MO · 2023012841
Definition
A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease.
510 S KINGSHIGHWAY BLVD, Saint Louis, MO 63110
Open in Google Maps ↗

Other Identifiers 1

Medicaid200112125MO

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. William Christopher Ou Md 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 63110 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
$86.32 typical visit price
range $55.65 – $169.38
Typical copayment $21.58 (range $13.91 – $42.34)
Most-billed visit code 99203
Established Patient
$69.50 typical visit price
range $17.76 – $137.92
Typical copayment $17.37 (range $4.44 – $34.48)
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.

BENJAMIN LEE MD
Radiology (Neuroradiology)
510 S KINGSHIGHWAY BLVD
SAINT LOUIS, MO 63110
St. Louis City (314) 362-7092
DR. ADRIAN ALBERTO SANCHEZ MD
Radiology (Diagnostic Radiology)
510 S KINGSHIGHWAY BLVD, DEPT RADIOLOGY
SAINT LOUIS, MO 63110
St. Louis City (314) 362-7200
DR. ZIAD WALID TARCHA MD
Radiology (Diagnostic Radiology)
510 S KINGSHIGHWAY BLVD, DEPT RADIOLOGY
SAINT LOUIS, MO 63110
St. Louis City (314) 362-7200
DR. JAMES EDWARD KELLY MD
Radiology (Diagnostic Radiology)
510 S KINGSHIGHWAY BLVD, DEPT RADIOLOGY
SAINT LOUIS, MO 63110
St. Louis City (314) 362-7200
DR. JOSHUA S SHIMONY MD
Radiology (Diagnostic Radiology)
510 S KINGSHIGHWAY BLVD, DEPT RADIOLOGY
SAINT LOUIS, MO 63110
St. Louis City (314) 362-7200
RASHID FUAD AL-SUKAITI MD
Radiology (Diagnostic Radiology)
510 S KINGSHIGHWAY BLVD
SAINT LOUIS, MO 63110
St. Louis City (314) 362-7092
DR. ANDREW THOMAS GREER MD
Radiology (Diagnostic Radiology)
510 S KINGSHIGHWAY BLVD, DEPT RADIOLOGY
SAINT LOUIS, MO 63110
St. Louis City (314) 362-7200
DR. GHAZAL SHADMANI MD
Radiology (Diagnostic Radiology)
510 S KINGSHIGHWAY BLVD, DEPT RADIOLOGY
SAINT LOUIS, MO 63110
St. Louis City (314) 362-7200

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 William Ou's NPI number?

The NPI number for William Ou is 1609454388. It was assigned to this individual provider in the NPPES registry on April 1, 2021.

Where is William Ou located?

William Ou practices at 510 S Kingshighway Blvd Dept Radiology, Saint Louis, MO 63110. The listed phone number is (314) 362-7200.

What is William Ou's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.

Is William Ou enrolled in Medicare?

Yes. William Ou is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for William Ou was last updated on July 7, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 41 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.