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DR. LOC DAC BUI M.D.
NPI 1023081387
Internal Medicine in Westminster, CA

Active since February 08, 2006PECOS EnrolledAccepts Medicare AssignmentCLIA 05D0887189 · Waiver
8900 BOLSA AVE, SUITE B, WESTMINSTER, CA 92683(714) 897-2623(714) 379-0343 Get Directions Write a Review

NPPES record last updated: May 13, 2020. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Dr. Loc Dac Bui M.d. NPPES

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

DR. LOC DAC BUI M.D. (NPI 1023081387) is an individual internal medicine provider in Westminster, California, licensed in California (A50198) and active in the NPI registry since February 2006. He is enrolled in Medicare PECOS, holds a CLIA Waiver certificate valid through June 6, 2028, and is a graduate of Other (1972).

NPPES Registry Identity

NPI1023081387
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. LOC DAC BUICredential: M.D.
Location Address8900 BOLSA AVE, SUITE BWestminster, CA 92683-5475
Mailing Address8900 Bolsa Ave, Suite BWestminster, CA 92683-5475 · (714) 897-2623 · Fax (714) 379-0343
Phone(714) 897-2623
Fax(714) 379-0343
Sole ProprietorNo
Medical School CMSOtherGraduated 1972
Enumeration DateFebruary 8, 2006
Last NPPES UpdateMay 13, 2020
NPPES CertifiedMay 13, 2020
✔ NPI 1023081387 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · A50198
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
8900 BOLSA AVE, Westminster, CA 92683
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Other Identifiers 1

Medicaid00A501980CA

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Loc Dac Bui M.d. 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 ID3577759034
PECOS Enrollment IDI20101123000285
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.

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 05D0887189

Loc D Bui MD · Westminster, CA
Active · expires Jun 6, 2028
CLIA Number05D0887189
Laboratory TypePhysician Office
Certificate Effective DateJune 7, 2026
Certificate Expiration DateJune 6, 2028
Laboratory DirectorLoc D. Bui MD
Laboratory Phone(714) 897-2623
Laboratory LocationLoc D Bui MD8900 Bolsa Ave Suite B, Westminster, CA 92683
CLIA data matches this NPI record on: Address Phone
This certificate is issued to a laboratory to perform only waived tests.

Areas of Expertise CMS Part B claims 8

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 office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
599 services85 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
275 services72 patients
Insertion of needle into vein for collection of blood sample 36415
This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.
131 services62 patients
Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month 99490
Chronic care management services involve a healthcare professional directing clinical staff in managing your chronic conditions. This includes the first 20 minutes per month of services like medication management, care coordination, and health monitoring to help improve your health and quality of life.
73 services41 patients
Administration of influenza virus vaccine G0008
The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.
52 services52 patients
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439
An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.
36 services36 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92683 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
$142.39 typical visit price
range $62.96 – $187.60
Typical copayment $35.59 (range $15.74 – $46.90)
Most-billed visit code 99204
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.

Referred Medical Equipment & Supplies CMS DME claims 3

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253
DME-Other DME · category DE017N
6 suppliers23 claims56 services$4.00 avg. paid by Medicare
Lancets, per box of 100 A4259
DME-Medical/Surgical Supplies · category DA000N
6 suppliers19 claims24 services$0.71 avg. paid by Medicare
Albuterol, inhalation solution, fda-approved final product, non-compounded, administered through dme, unit dose, 1 mg J7613
DME-Drugs Administered Through DME · category DG006N
3 suppliers12 claims3,064 services$0.03 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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.

NGOC ANH T HUYNH
Pharmacy (Community/Retail Pharmacy)
8900 BOLSA AVE, STE A
WESTMINSTER, CA 92683
Orange County (714) 894-4518
NGOC MY THI HUYNH, MD., INC
Obstetrics & Gynecology
8900 BOLSA AVE, C
WESTMINSTER, CA 92683
Orange County (714) 379-8809
MRS. NGOC AHN T HUYNH PHARMACIST
Pharmacist
8900 BOLSA AVE, WESTMINSTER
WESTMINSTER, CA 92683
Orange County (714) 894-4518

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 Loc Bui's NPI number?

The NPI number for Loc Bui is 1023081387. It was assigned to this individual provider in the NPPES registry on February 8, 2006.

Where is Loc Bui located?

Loc Bui practices at 8900 Bolsa Ave Suite B, Westminster, CA 92683. The listed phone number is (714) 897-2623.

What is Loc Bui's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Loc Bui enrolled in Medicare?

Yes. Loc 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.

Does Loc Bui hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 05D0887189) is associated with this NPI, valid through June 6, 2028. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Loc Bui was last updated on May 13, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.