BAO THAI BUI M.D.
NPI 1801099593
Internal Medicine - Cardiovascular Disease in Fountain Valley, CA

Q: What is Bao Bui's NPI number?

The NPI number for Bao Bui is 1801099593. It was assigned to this individual provider in the NPPES registry on June 8, 2007.

Q: What is Bao Bui's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Q: When was this NPI record last updated?

The NPPES record for Bao Bui was last updated on March 12, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.

Active since June 08, 2007PECOS EnrolledAccepts Medicare Assignment

11100 WARNER AVE, SUITE 162, FOUNTAIN VALLEY, CA 92708(714) 432-1212(714) 432-1215 Get Directions Write a Review

NPPES record last updated: March 12, 2015. Verified against the NPPES registry weekly; last sync: October 25, 2026.

On this page

About Bao Thai Bui M.d. NPPES

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

BAO THAI BUI M.D. (NPI 1801099593) is an individual cardiovascular disease provider in Fountain Valley, California, licensed in California (A125690) and active in the NPI registry since June 2007. He is enrolled in Medicare PECOS and is a graduate of Pennsylvania State University College Of Medicine (2007).

NPPES Registry Identity

NPI1801099593

Entity TypeIndividualMale

Primary Taxonomy207RC0000X

Provider Legal NameBAO THAI BUICredential: M.D.

Location Address11100 WARNER AVE, SUITE 162Fountain Valley, CA 92708-7506

Mailing Address11100 Warner Ave, Suite 162Fountain Valley, CA 92708-7506 · (714) 432-1212 · Fax (714) 432-1215

Phone(714) 432-1212

Fax(714) 432-1215

Sole ProprietorNo

Medical School CMSPennsylvania State University College Of MedicineGraduated 2007

Enumeration DateJune 8, 2007

Last NPPES UpdateMarch 12, 2015

✔ NPI 1801099593 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians

Taxonomy Code207RC0000X

License✔ Licensed in CA · A125690

Definition

An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.

11100 WARNER AVE, Fountain Valley, CA 92708

Open in Google Maps ↗

Other Identifiers 1

OtherA125690CA · Ca State License

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

Bao Thai 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 ID1355590324

PECOS Enrollment IDI20141210000879

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

Medicare enrollment records show Bao Bui reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Southern Heart Clinic, Inc.

Same address

Cardiovascular Disease

11100 WARNER AVE STE 152
Fountain Valley, CA 92708

Reassigned Medicare billing, California enrollment

NPI 1760594451 (714) 432-1212

Andrew Nguyen Do A Professional Medical Corporation

8.2 mi

Neurology

280 NEWPORT CENTER DR STE 110
Newport Beach, CA 92660

Reassigned Medicare billing, California enrollment
11 clinicians in this Medicare group

NPI 1164202396 (702) 909-5903

Auricle Solutions Incorporated

10 mi

Cardiovascular Disease

12 HAWKEYE
Irvine, CA 92602

Reassigned Medicare billing, California enrollment

NPI 1235695420 (805) 338-0554

Regional Imaging, PC

135 mi

Diagnostic Radiology

6412 LAUREL AVE
Mountain Mesa, CA 93240

Reassigned Medicare billing, California enrollment
10 clinicians in this Medicare group

NPI 1689241150 (760) 379-2681

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

Areas of Expertise CMS Part B claims 28

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.

Injection, adenosine, 1 mg (not to be used to report any adenosine phosphate compounds) J0153

An adenosine injection is a quick-acting medication used to manage irregular heart rhythms. It works by slowing down the electrical activity in your heart, allowing it to return to its regular rhythm. This procedure is safe and typically performed under medical supervision.

3,315 services45 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

1,315 services63 patients

Management using the results of remote vital sign monitoring per calendar month, first 20 minutes 99457

This service involves reviewing and managing your health data, which is remotely monitored and collected. Your vital signs like heart rate and blood pressure are tracked regularly throughout the month. The first 20 minutes of this data analysis per month is included in this service.

949 services415 patients

Management using the results of remote vital sign monitoring per calendar month, each additional 20 minutes 99458

This service involves analyzing your vital signs, like heart rate and blood pressure, remotely collected over a month. Each additional 20 minutes spent on management refers to extra time spent reviewing, interpreting your data, and planning your care. It's a critical part of ensuring your wellbeing.

949 services415 patients

Remote monitoring of physiologic parameters, initial supply of devices with daily recordings or programmed alerts transmission, each 30 days 99454

This service involves using devices to remotely track body functions like heart rate or blood pressure. These devices, provided initially, record data daily or send alerts if readings are abnormal. The service is renewed every 30 days.

944 services415 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233

Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.

859 services74 patients

Critical care, first 30-74 minutes 99291

Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.

624 services42 patients

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.

564 services459 patients

Collection and interpretation of physical parameters stored in computers and/or transmitted by the patient and/or caregiver to qualified health care professional, requiring 30 minutes or more, per 30 days 99091

This service involves gathering and analyzing health data from a patient, which is digitally stored and sent to a healthcare professional. This may include heart rate, blood pressure, or blood sugar levels. The process takes at least 30 minutes and is repeated every 30 days.

538 services217 patients

Complete ultrasound study of arm and leg arteries 93923

This procedure involves using sound waves to produce images of your arm and leg arteries. It helps identify blockages or abnormalities that could lead to conditions like stroke or peripheral artery disease. It's non-invasive and painless.

360 services180 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 93000

An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.

295 services281 patients

Testing of autonomic nervous system function and heart rate response to deep breathing 95921

This test studies the autonomic nervous system, which controls body functions like heart rate. During the test, you'll breathe deeply while the heart rate is monitored. This helps identify any irregularities in the heart's response to breathing changes.

180 services180 patients

Testing of autonomic (sympathetic) nervous system function 95923

Testing of autonomic nervous system function assesses how well your body's automatic processes, like heart rate and blood pressure, are working. It involves various non-invasive tests like heart rate variability and sweat production tests.

180 services180 patients

Ultrasound of heart with color-depicted blood flow, rate, direction and valve function 93306

This is a heart ultrasound, also known as an echocardiogram. It uses sound waves to create pictures of your heart, showing how blood flows through it. The color depicts the blood flow's speed and direction. It also checks the heart's valves to ensure they're working properly.

141 services141 patients

Ultrasound of both sides of head and neck blood flow 93880

An ultrasound of the head and neck blood flow is a safe, non-invasive procedure that uses sound waves to create images of blood vessels. It helps detect abnormalities like blockages or clots, ensuring optimal blood flow.

110 services110 patients

Technetium tc-99m sestamibi, diagnostic, per study dose A9500

Technetium Tc-99m Sestamibi is a diagnostic test used to create images of your heart or breast tissues. It involves a safe radioactive substance injection that helps doctors to detect any abnormalities or changes in these tissues.

90 services45 patients

Assessment of and care planning for patient with impaired thought processing, typically 60 minutes 99483

This service involves a thorough evaluation of your thought processes, which may be impacting your daily life. In a typical 50-minute session, a healthcare professional will assess your cognitive abilities, identify any areas of concern, and develop a personalized care plan to help improve your mental function.

84 services84 patients

Critical care, each additional 30 minutes 99292

Critical care refers to special attention given to patients facing life-threatening conditions. Each additional 30 minutes indicates the extension of this specialized care. This might include close monitoring, medication adjustments, and immediate interventions as needed.

75 services19 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.

69 services69 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

57 services54 patients

Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision and review by physician 93015

An exercise or drug-induced heart stress test with ECG is a procedure performed by a doctor to assess how your heart responds to exertion. It involves monitoring your heart's electrical activity while you exercise or after medication is given to mimic exercise effects.

50 services50 patients

Nuclear medicine studies of heart muscle at rest and with stress and spect 78452

Nuclear medicine studies of the heart involve two parts: rest and stress. During rest, images are taken of your heart at ease. During stress, images are taken after exercise or medication-induced stress. SPECT is a special imaging technique providing 3D pictures of your heart, helping identify any issues.

45 services45 patients

Ultrasound of heart 93307

An ultrasound of the heart, also known as an echocardiogram, is a non-invasive procedure that uses sound waves to create images of your heart. This test allows your doctor to monitor how your heart and its valves are functioning. It's a safe, painless process that can help diagnose heart conditions.

41 services37 patients

Evaluation of single, dual, multiple lead or leadless pacemaker system 93288

An evaluation of a pacemaker system examines how well your heart device is working. Single, dual, multiple lead, or leadless refers to the wires that deliver electrical pulses from the pacemaker to your heart. This check ensures your heart is receiving the right amount of support from the device.

34 services34 patients

Ultrasound of heart with color-depicted blood flow, rate, direction and valve function 93306

34 services29 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010

A routine electrocardiogram (ECG) with 12 leads is a simple, non-invasive test that records the electrical activity of your heart. It helps in identifying heart conditions by detecting irregularities in your heart rhythms. The results are interpreted and a report is provided.

28 services18 patients

Ultrasound of leg arteries or artery grafts 93925

An ultrasound of leg arteries or artery grafts is a non-invasive imaging test. It uses high-frequency sound waves to capture live images from inside your body, specifically your leg arteries or grafts. This helps in detecting any blockages or abnormalities.

17 services17 patients

Evaluation of single, dual, or multiple lead implantable defibrillator system 93289

This procedure evaluates your implantable defibrillator system, which helps regulate your heart rhythm. It can involve single, dual, or multiple lead systems. It's essential to ensure the device is working correctly and adjusting to your heart's needs.

11 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92708 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

$77.96 typical visit price

range $20.84 – $153.61

Typical copayment $19.49 (range $5.21 – $38.40)

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. SAJEET SINGH SAWHNEY M.D.

Internal Medicine (Nephrology)

11100 WARNER AVE, SUITE 218
FOUNTAIN VALLEY, CA 92708

Orange County (714) 641-9696

DR. ROBERT ALLAN DEVEREAUX MD

Family Medicine

11100 WARNER AVE, STE 100
FOUNTAIN VALLEY, CA 92708

Orange County (714) 957-9389

DR. VIJAYALAKSHMI WIJEYAKUMAR M.D.

Internal Medicine (Nephrology)

11100 WARNER AVE, SUITE 212
FOUNTAIN VALLEY, CA 92708

Orange County (714) 641-9696

PLATINUM MEDICAL CARE

Internal Medicine (Nephrology)

11100 WARNER AVE, SUITE 218
FOUNTAIN VALLEY, CA 92708

Orange County (714) 641-9696

FOUNTAIN VALLEY REGIONAL HOSPITAL AND MEDICAL CENTER

Pharmacist (Pharmacotherapy)

11100 WARNER AVE, SUITE 318
FOUNTAIN VALLEY, CA 92708

Orange County (714) 966-7217

SELECT HEALTHCARE SYSTEM, A MEDICAL CORPORATION

Health Maintenance Organization

11100 WARNER AVE, SUITE 152
FOUNTAIN VALLEY, CA 92708

Orange County (714) 343-7575

MRS. TOQUYNH DINH KIEU M.D.

Pediatrics

11100 WARNER AVE, SUITE # 116
FOUNTAIN VALLEY, CA 92708

Orange County (714) 641-0850

DR. AJIT SINGH SAWHNEY M.D.

Internal Medicine (Nephrology)

11100 WARNER AVE, SUITE 212
FOUNTAIN VALLEY, CA 92708

Orange County (714) 641-9696

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 Bao Bui's NPI number?

The NPI number for Bao Bui is 1801099593. It was assigned to this individual provider in the NPPES registry on June 8, 2007.

Where is Bao Bui located?

Bao Bui practices at 11100 Warner Ave Suite 162, Fountain Valley, CA 92708. The listed phone number is (714) 432-1212.

What is Bao Bui's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Is Bao Bui enrolled in Medicare?

Yes. Bao 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 Bao Bui's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Bao Bui reassigns Medicare benefits to 4 organizations: Southern Heart Clinic, Inc. (Fountain Valley, CA), Andrew Nguyen Do A Professional Medical Corporation (Newport Beach, CA), Auricle Solutions Incorporated (Irvine, CA) and Regional Imaging, PC (Mountain Mesa, 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 Bao 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 Bao Bui was last updated on March 12, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.