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MICHAEL WESLEY BUI MD
NPI 1306423405
Radiology - Diagnostic Radiology in Riverside, CA

Active since March 25, 2021PECOS Enrolled
4445 MAGNOLIA AVE, RIVERSIDE, CA 92501(949) 903-6802 Get Directions Write a Review

NPPES record last updated: June 2, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jun 2, 2026, Mar 25, 2021 (2 updates tracked since 2021).

About Michael Wesley Bui Md NPPES

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

MICHAEL WESLEY BUI MD (NPI 1306423405) is an individual diagnostic radiology provider in Riverside, California, licensed in California (A206754) and active in the NPI registry since March 2021. He is enrolled in Medicare PECOS, maintains 7 additional practice locations, and is a graduate of Other (2021).

NPPES Registry Identity

NPI1306423405
Entity TypeIndividualMale
Primary Taxonomy2085R0202X
Provider Legal NameMICHAEL WESLEY BUICredential: MD
Location Address4445 MAGNOLIA AVERiverside, CA 92501-4135
Mailing AddressFile 57326Los Angeles, CA 90074-0001
Phone(949) 903-6802
Sole ProprietorNo
Medical School CMSOtherGraduated 2021
Enumeration DateMarch 25, 2021
Last NPPES UpdateJune 2, 20262 updates tracked since enumeration
NPPES CertifiedJune 2, 2026
✔ NPI 1306423405 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 CA · A206754
Definition
A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease.
4445 MAGNOLIA AVE, Riverside, CA 92501
Open in Google Maps ↗

Secondary Practice Locations 7

Location 11415 Ross AveEl Centro, CA 92243-4306 · Phone (800) 926-8273 · Fax (888) 539-8781
Location 24250 1st AveSan Diego, CA 92103-2026 · Phone (800) 926-8273 · Fax (888) 539-8781
Location 3330 Lewis StSan Diego, CA 92103-2108 · Phone (800) 926-8273 · Fax (888) 539-8781
Location 4200 W Arbor DrSan Diego, CA 92103-9000 · Phone (800) 926-8273 · Fax (888) 539-8781
Location 56655 Alvarado RdSan Diego, CA 92120-5208 · Phone (800) 926-8273 · Fax (888) 539-8781
Location 69400 Campus Point DrLA Jolla, CA 92093-1350 · Phone (800) 926-8273 · Fax (888) 539-8781
Location 79300 Campus Point DrLA Jolla, CA 92037-1300 · Phone (800) 926-8273 · Fax (888) 539-8781

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Michael Wesley Bui Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID5991277394
PECOS Enrollment IDI20260617001122
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 Michael Bui reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Regents Of The University Of California
85 mi
Diagnostic Radiology
200 W ARBOR DR
San Diego, CA 92103
  • Reassigned Medicare billing, California enrollment
  • 360 clinicians in this Medicare group
NPI 1558463927 (800) 926-8273

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92501 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
$91.88 typical visit price
range $59.60 – $179.42
Typical copayment $22.97 (range $14.90 – $44.85)
Most-billed visit code 99203
Established Patient
$74.08 typical visit price
range $19.37 – $146.42
Typical copayment $18.52 (range $4.84 – $36.60)
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.

MR. DAVID W LEVINE PA-C
Physician Assistant
4445 MAGNOLIA AVE
RIVERSIDE, CA 92501
Riverside County (951) 788-3381
STEVEN GREGORY PARKIN MD
Student in an Organized Health Care Education/Training Program
4445 MAGNOLIA AVE
RIVERSIDE, CA 92501
Riverside County (951) 788-3000
JAGMEET SINGH ARORA
Student in an Organized Health Care Education/Training Program
4445 MAGNOLIA AVE
RIVERSIDE, CA 92501
Riverside County (951) 966-8398
ASHFI HOQUE
Family Medicine
4445 MAGNOLIA AVE
RIVERSIDE, CA 92501
Riverside County (951) 495-9994
ALINA S POPA MD
Hospitalist
4445 MAGNOLIA AVE
RIVERSIDE, CA 92501
Riverside County (951) 788-3636
RIVERSIDE RADIOLOGY MEDICAL GROUP, INC
Radiology (Diagnostic Radiology)
4445 MAGNOLIA AVE
RIVERSIDE, CA 92501
Riverside County (951) 788-3400
RUSHIL ANIL PATEL
Emergency Medicine
4445 MAGNOLIA AVE
RIVERSIDE, CA 92501
Riverside County (951) 788-3000
YASMINE KASIRI DO
Student in an Organized Health Care Education/Training Program
4445 MAGNOLIA AVE
RIVERSIDE, CA 92501
Riverside County (951) 990-5799

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 Michael Bui's NPI number?

The NPI number for Michael Bui is 1306423405. It was assigned to this individual provider in the NPPES registry on March 25, 2021.

Where is Michael Bui located?

Michael Bui practices at 4445 Magnolia Ave, Riverside, CA 92501. The listed phone number is (949) 903-6802.

What is Michael Bui's specialty?

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

Is Michael Bui enrolled in Medicare?

Yes. Michael Bui is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Michael Bui's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Michael Bui reassigns Medicare benefits to Regents Of The University Of California (San Diego, CA). 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 Michael Bui's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Michael Bui was last updated on June 2, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.