AMY THU BUI M.D.
NPI 1013027838
Specialist in Mission Viejo, CA

Q: What is Amy Bui's NPI number?

The NPI number for Amy Bui is 1013027838. It was assigned to this individual provider in the NPPES registry on August 30, 2006.

Q: What is Amy Bui's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

Q: When was this NPI record last updated?

The NPPES record for Amy Bui was last updated on October 15, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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 August 30, 2006PECOS EnrolledAccepts Medicare Assignment

26800 CROWN VALLEY PKWY, SUITE 230, MISSION VIEJO, CA 92691(949) 542-8004(949) 364-3682 Get Directions Write a Review

NPPES record last updated: October 15, 2021. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Oct 15, 2021, Oct 26, 2020 (2 updates tracked since 2020).

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About Amy Thu Bui M.d. NPPES

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

AMY THU BUI M.D. (NPI 1013027838) is an individual specialist in Mission Viejo, California, licensed in California (A82140) and active in the NPI registry since August 2006. She is enrolled in Medicare PECOS and is a graduate of University Of Florida College Of Medicine (2001).

NPPES Registry Identity

NPI1013027838

Entity TypeIndividualFemale

Primary Taxonomy174400000X

Provider Legal NameAMY THU BUICredential: M.D.

Location Address26800 CROWN VALLEY PKWY, SUITE 230Mission Viejo, CA 92691-6384

Mailing Address26522 La Alameda, Suite 120Mission Viejo, CA 92691-6330 · (949) 282-1671 · Fax (949) 367-0518

Phone(949) 542-8004

Fax(949) 364-3682

Sole ProprietorNo

Medical School CMSUniversity Of Florida College Of MedicineGraduated 2001

Enumeration DateAugust 30, 2006

Last NPPES UpdateOctober 15, 20212 updates tracked since enumeration

NPPES CertifiedOctober 15, 2021

✔ NPI 1013027838 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtySpecialistOther Service Providers

Taxonomy Code174400000X

License✔ Licensed in CA · A82140

Definition

An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.

Also ListedInternal Medicine · Endocrinology, Diabetes & MetabolismTaxonomy 207RE0101X · License A82140 (CA)

26800 CROWN VALLEY PKWY, Mission Viejo, CA 92691

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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

Amy Thu 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 ID4385641414

PECOS Enrollment IDI20061101000569

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 Amy Bui reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Providence Medical Foundation

0.1 mi

Family Medicine

26522 LA ALAMEDA, SUITE 120
Mission Viejo, CA 92691

Reassigned Medicare billing, California enrollment
1,699 clinicians in this Medicare group

NPI 1427305960 (949) 364-9631

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 13

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.

405 services195 patients

Ultrasound scan of head and neck soft tissue 76536

An ultrasound scan of the head and neck soft tissue is a non-invasive procedure that uses sound waves to create images of the soft tissues in these areas. It helps identify any abnormalities or issues, such as tumors, cysts, or infections. It's painless and doesn't involve radiation.

87 services83 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

62 services46 patients

Dxa bone density measurement of hip, pelvis, spine 77080

A DXA bone density measurement is a simple, quick, and non-invasive procedure that assesses the strength of your bones. This test uses X-rays to measure the amount of minerals, mainly calcium, in the hip, pelvis, and spine. It helps in early detection of osteoporosis or other bone diseases.

47 services47 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.

39 services38 patients

Hemoglobin a1c level 83036

Hemoglobin A1c (HbA1c) is a test that measures your average blood sugar level over the past 2-3 months. It's used to monitor how well diabetes is being controlled. High levels may indicate that your diabetes treatment plan needs adjustment.

36 services36 patients

Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report 95251

This procedure involves placing a small sensor under your skin to continuously monitor your blood sugar levels in tissue fluid. The data is interpreted and a report is generated to help manage your diabetes more effectively.

34 services12 patients

Blood test, thyroid stimulating hormone (tsh) 84443

A TSH blood test measures the level of thyroid stimulating hormone in your body. This hormone is produced by the pituitary gland and regulates how your thyroid works. It's a simple procedure where a small amount of blood is drawn from your arm for analysis.

26 services26 patients

Blood test, comprehensive group of blood chemicals 80053

A comprehensive group of blood chemicals test, also known as a comprehensive metabolic panel, is a blood test that measures your sugar level, electrolyte and fluid balance, kidney function, and liver function. This helps to check your body's overall health.

24 services24 patients

Blood test, lipids (cholesterol and triglycerides) 80061

A lipid panel is a blood test that measures fats and fatty substances, such as cholesterol and triglycerides. These substances are used by your body as a source of energy. High levels can lead to health issues, including heart disease.

19 services19 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

12 services12 patients

Fine needle aspiration biopsy using ultrasound guidance, first growth 10005

Fine needle aspiration biopsy with ultrasound guidance is a procedure where a thin needle is inserted into a growth to extract a small sample. Ultrasound helps accurately locate the growth. This sample is then analyzed to determine the nature of the growth.

11 services11 patients

Vitamin d-3 level 82306

A Vitamin D-3 level test measures the amount of Vitamin D-3, a crucial nutrient, in your body. This test helps identify if your levels are too low or too high. Low levels may lead to bone weakness, while high levels could harm your kidneys. It's a simple blood test.

11 services11 patients

Referred Medical Equipment & Supplies CMS DME claims 7

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

Supplies for maintenance of insulin infusion catheter, per week A4224

DME-Other DME · category DE017N

4 suppliers15 claims191 services$18.11 avg. paid by Medicare

Supplies for external insulin infusion pump, syringe type cartridge, sterile, each A4225

DME-Other DME · category DE017N

4 suppliers15 claims470 services$2.34 avg. paid by Medicare

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253

DME-Other DME · category DE017N

19 suppliers60 claims167 services$6.03 avg. paid by Medicare

Lancets, per box of 100 A4259

DME-Medical/Surgical Supplies · category DA000N

9 suppliers18 claims30 services$1.00 avg. paid by Medicare

External ambulatory infusion pump, insulin E0784

DME-Other DME · category DE017N

1 supplier11 claims11 services$292.90 avg. paid by Medicare

Insulin for administration through dme (i.e., insulin pump) per 50 units J1817

Treatment-Injections and Infusions (nononcologic) · category RI000N

3 suppliers13 claims1,100 services$6.85 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 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MATT AHMADI, DPM, INC.

Podiatrist (Foot & Ankle Surgery)

26800 CROWN VALLEY PKWY, SUITE 320
MISSION VIEJO, CA 92691

Orange County (949) 276-8900

MICHAEL PM TRUONG M.D.

Internal Medicine (Endocrinology, Diabetes & Metabolism)

26800 CROWN VALLEY PKWY, SUITE 230
MISSION VIEJO, CA 92691

Orange County (949) 364-3330

PETER C. CZULEGER M.D.

Emergency Medicine

26800 CROWN VALLEY PKWY, SUITE 150
MISSION VIEJO, CA 92691

Orange County (949) 276-2111

KATHLEEN MARY POLLOCK M.D.

Obstetrics & Gynecology

26800 CROWN VALLEY PKWY, SUITE 525
MISSION VIEJO, CA 92691

Orange County (949) 364-1040

TRICIA DAVID BATO D.D.S.

Dentist (Periodontics)

26800 CROWN VALLEY PKWY, STE 375
MISSION VIEJO, CA 92691

Orange County (949) 388-3877

DR. RICHARD JACOB M.D.

Internal Medicine (Cardiovascular Disease)

26800 CROWN VALLEY PKWY, SUITE 250
MISSION VIEJO, CA 92691

Orange County (949) 364-3570

HABIB AZAD M.D.

Internal Medicine (Nephrology)

26800 CROWN VALLEY PKWY, SUITE 250
MISSION VIEJO, CA 92691

Orange County (949) 364-0644

ERIK A PASIN MD

Urology

26800 CROWN VALLEY PKWY, #445
MISSION VIEJO, CA 92691

Orange County (949) 364-1000

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 Amy Bui's NPI number?

The NPI number for Amy Bui is 1013027838. It was assigned to this individual provider in the NPPES registry on August 30, 2006.

Where is Amy Bui located?

Amy Bui practices at 26800 Crown Valley Pkwy Suite 230, Mission Viejo, CA 92691. The listed phone number is (949) 542-8004.

What is Amy Bui's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

Is Amy Bui enrolled in Medicare?

Yes. Amy 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 organization bills Medicare for Amy Bui's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Amy Bui reassigns Medicare benefits to Providence Medical Foundation (Mission Viejo, 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 Amy 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 Amy Bui was last updated on October 15, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.