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MICHAEL BUI FNP
NPI 1740919398
Nurse Practitioner - Family in Laguna Hills, CA

Active since June 08, 2022PECOS EnrolledAccepts Medicare Assignment
23961 CALLE DE LA MAGDALENA STE 500, LAGUNA HILLS, CA 92653(949) 855-1101(949) 289-9171 Get Directions Write a Review

NPPES record last updated: October 15, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Mar 11, 2023, Jun 8, 2022 (2 updates tracked since 2022).

About Michael Bui Fnp NPPES

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

MICHAEL BUI FNP (NPI 1740919398) is an individual family provider in Laguna Hills, California, licensed in California (95019933) and active in the NPI registry since June 2022. He is enrolled in Medicare PECOS and is a graduate of University Of Southern California Keck School Of Medicine (2021).

NPPES Registry Identity

NPI1740919398
Entity TypeIndividualMale
Primary Taxonomy363LF0000X
Provider Legal NameMICHAEL BUICredential: FNP
Location Address23961 CALLE DE LA MAGDALENA STE 500Laguna Hills, CA 92653-7622
Mailing Address23961 Calle De La Magdalena Ste 500Laguna Hills, CA 92653-7622 · (498) 551-1019 · Fax (949) 289-9171
Phone(949) 855-1101
Fax(949) 289-9171
Sole ProprietorNo
Medical School CMSUniversity Of Southern California Keck School Of MedicineGraduated 2021
Enumeration DateJune 8, 2022
Last NPPES UpdateOctober 15, 20252 updates tracked since enumeration
NPPES CertifiedOctober 15, 2025
✔ NPI 1740919398 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · FamilyPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LF0000X
License✔ Licensed in CA · 95019933
23961 CALLE DE LA MAGDALENA STE 500, Laguna Hills, CA 92653
Open in Google Maps ↗

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Michael Bui Fnp is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID4385000181
PECOS Enrollment IDI20230522001190
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 Reassignments

2

Medicare enrollment records show Michael Bui reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Orange County Urology Associates, Inc. A Medical Group
Same address
Urology
23961 CALLE DE LA MAGDALENA STE 500
Laguna Hills, CA 92653
  • Reassigned Medicare billing, California enrollment
  • 17 clinicians in this Medicare group
NPI 1215992748 (949) 855-1101
Southern California Endocrine Medical Group, Pmc
15 mi
Endocrinology, Diabetes & Metabolism
1310 W STEWART DR STE 215
Orange, CA 92868
  • Reassigned Medicare billing, California enrollment
  • Medicare enrollment name: Southern California Endocrine Medical Group, P.M.C.
  • 3 clinicians in this Medicare group
NPI 1568471688 (714) 997-5000

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 92653 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
$96.36 typical visit price
range $62.96 – $187.60
Typical copayment $24.09 (range $15.74 – $46.90)
Most-billed visit code 99203
Established Patient
$109.96 typical visit price
range $20.84 – $153.61
Typical copayment $27.49 (range $5.21 – $38.40)
Most-billed visit code 99214
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.

POONE SHOURESHI M.D.
Urology (Urogynecology and Reconstructive Pelvic Surgery)
23961 CALLE DE LA MAGDALENA STE 500
LAGUNA HILLS, CA 92653
Orange County (949) 855-1101
LEAH Y NAKAMURA M.D.
Urology (Urogynecology and Reconstructive Pelvic Surgery)
23961 CALLE DE LA MAGDALENA STE 500
LAGUNA HILLS, CA 92653
Orange County (949) 855-1011
LAUREN MIEKO LUM
Physician Assistant
23961 CALLE DE LA MAGDALENA STE 500
LAGUNA HILLS, CA 92653
Orange County (949) 855-1101
DR. DANIEL JIANG MD
Urology
23961 CALLE DE LA MAGDALENA STE 500
LAGUNA HILLS, CA 92653
Orange County (949) 855-1101
DR. AARON SPITZ M.D.
Urology
23961 CALLE DE LA MAGDALENA STE 500
LAGUNA HILLS, CA 92653
Orange County (949) 855-1101
ORANGE COUNTY UROLOGY ASSOCIATES, INC. A MEDICAL GROUP
Urology
23961 CALLE DE LA MAGDALENA STE 500
LAGUNA HILLS, CA 92653
Orange County (949) 855-1101
DR. DANIEL SU M.D.
Urology
23961 CALLE DE LA MAGDALENA STE 500
LAGUNA HILLS, CA 92653
Orange County (949) 855-1101
ASHLEY SWANSON NP
Nurse Practitioner
23961 CALLE DE LA MAGDALENA STE 500
LAGUNA HILLS, CA 92653
Orange County (949) 855-1101

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 1740919398. It was assigned to this individual provider in the NPPES registry on June 8, 2022.

Where is Michael Bui located?

Michael Bui practices at 23961 Calle De La Magdalena Ste 500, Laguna Hills, CA 92653. The listed phone number is (949) 855-1101.

What is Michael Bui's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.

Is Michael Bui enrolled in Medicare?

Yes. Michael Bui is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Michael Bui's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Michael Bui reassigns Medicare benefits to 2 organizations: Orange County Urology Associates, Inc. A Medical Group (Laguna Hills, CA) and Southern California Endocrine Medical Group, Pmc (Orange, CA). Each 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 October 15, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.