Andy Quang Bui , PA-C
Physician Assistant โข Orange, CA
315 S Tustin St
Orange, CA 928662501
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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NPI assigned on January 9, 2023; this date does not establish years in practice.
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Published CMS data list 67 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 99213 โ Established patient outpatient office visit: 30 service units.
- 99203 โ New patient outpatient office visit: 26 service units.
- 87811 โ Detection test by immunoassay with direct visual observation for severe acute respiratory syndrome coronavirus 2 (covid-19): 11 service units.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPTยฎ only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See the full table ยท Guide: How to read Medicare Part B data
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Published CMS data list 123 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Azithromycin โ 28 prescription fills, including refills.
- Fluticasone Propionate โ 23 prescription fills, including refills.
- Albuterol Sulfate Hfa (Albuterol Sulfate) โ 23 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 7 records in the table ยท Guide: How to read Medicare Part D prescriber data
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Fewer Medicare Part B services than 75% of clinicians listed under Physician Assistant in Orange, CA (2024, 69 clinicians with data). Median for this group: 184. Middle half: 79 to 471.
Fewer Medicare Part B services than 75% of clinicians listed under Physician Assistant in California (2024, 4,833 clinicians with data). Median for this group: 198. Middle half: 71 to 535.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
Practice Location & Contact Primary Location
315 S Tustin St
Orange, CA 928662501
NPPES lists 1 additional practice-address record in Pomona, CA. See the list
Source: CMS NPPES NPI Registry, practice location records; release date unavailable.
CMS Doctors and Clinicians lists 1 group name: Nellie Gail Urgent Care Medical Corp. See the list
Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
2023
What Public CMS Data Show
Physician Assistant: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
52 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider, 2024.
Medicare-allowed amount
About $5,630 in 2024
The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024.
Paid by Medicare
About $3,911 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024.
30-day fills
124 standardized 30-day fills in 2024
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$1,135 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024.
Open Payments general payments, program year 2025
All general payments: $723.55 across 8 records.
By nature of payment
- Food and Beverage: $723.55 across 8 records.
Reporting-company totals (3 largest of 5)
- AstraZeneca Pharmaceuticals LP: $261.37 across 4 records.
- Edwards Lifesciences Corporation: $169.03 across 1 record.
- Janssen Pharmaceuticals, Inc: $150.00 across 1 record.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).
Years since graduation
3 years (graduated 2023)
CMS Doctors and Clinicians data list 2023 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File.
NPI first issued
2023
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Accepts Medicare assignment
CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, โDoes your provider accept Medicare as full payment?โ
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Andy Bui has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Andy Bui as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Orange and California
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Fewer Medicare Part B services than 75% of clinicians listed under Physician Assistant in Orange, CA (2024, 69 clinicians with data). Median for this group: 184. Middle half: 79 to 471.
Fewer Medicare Part B services than 75% of clinicians listed under Physician Assistant in California (2024, 4,833 clinicians with data). Median for this group: 198. Middle half: 71 to 535.
Medicare-allowed amount
A lower Medicare-allowed amount than 80% of clinicians listed under Physician Assistant in Orange, CA (2024, 69 clinicians with data). Median for this group: $15,137. Middle half: $7,619 to $46,859.
A lower Medicare-allowed amount than 75% of clinicians listed under Physician Assistant in California (2024, 4,833 clinicians with data). Median for this group: $18,173. Middle half: $6,666 to $41,587.
Paid by Medicare
A lower Medicare payment amount than 80% of clinicians listed under Physician Assistant in Orange, CA (2024, 69 clinicians with data). Median for this group: $11,958. Middle half: $5,387 to $34,851.
A lower Medicare payment amount than 75% of clinicians listed under Physician Assistant in California (2024, 4,833 clinicians with data). Median for this group: $13,209. Middle half: $4,792 to $30,879.
Medicare Part D prescriptions
Fewer Part D prescriptions than 60% of clinicians listed under Physician Assistant in Orange, CA (2024, 106 clinicians with data). Median for this group: 204. Middle half: 75 to 588.
Fewer Part D prescriptions than 60% of clinicians listed under Physician Assistant in California (2024, 7,516 clinicians with data). Median for this group: 229. Middle half: 72 to 718.
Part D drug cost
A lower Part D drug cost than 65% of clinicians listed under Physician Assistant in Orange, CA (2024, 106 clinicians with data). Median for this group: $2,576. Middle half: $717 to $27,315.
A lower Part D drug cost than 65% of clinicians listed under Physician Assistant in California (2024, 7,516 clinicians with data). Median for this group: $3,945. Middle half: $709 to $60,209.
181 active clinicians are listed under Physician Assistant with a practice address in Orange, CA (14,458 in California).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Orange
16.6% of these 181 clinicians have the CMS telehealth indicator.
57.5% of these 181 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
CMS data for Medicare Part B services are available for 2024 only.
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Medicare-allowed amount
CMS data for Medicare-allowed amount are available for 2024 only.
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Paid by Medicare
CMS data for Medicare payment amount are available for 2024 only.
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Medicare Part D prescriptions
CMS data for Part D prescriptions are available for 2024 only.
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30-day fills
CMS data for 30-day fills are available for 2024 only.
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Part D drug cost
CMS data for Part D drug cost are available for 2024 only.
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Industry payments (Open Payments)
CMS data for industry payments (Open Payments) are available for 2025 only.
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo ยท Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2025 (payments made January 1 โ December 31, 2025): fewer than 11 records totaling $723.55.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Edwards Lifesciences Corporation |
Food and Beverage
In-kind items and services
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EDWARDS SAPIEN 3 TRANSCATHETER HEART VALVE (THV) | General | $169.03 |
| Janssen Pharmaceuticals, Inc |
Food and Beverage
In-kind items and services
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TREMFYA | General | $150.00 |
| Exact Sciences Corporation |
Food and Beverage
In-kind items and services
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The Cologuard Plus Collection Kit | General | $125.00 |
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
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AIRSUPRA | General | $119.76 |
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
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AIRSUPRA | General | $118.96 |
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
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AIRSUPRA | General | $19.02 |
| Smith+Nephew, Inc. |
Food and Beverage
In-kind items and services
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COLLAGENASE SANTYL | General | $18.15 |
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
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AIRSUPRA | General | $3.63 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Performed Procedures & Service Volume
CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners โ by Provider and Service data, 2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
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99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
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30 | 20 | $244.81 | $83.72 |
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99203
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more
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26 | 26 | $300.93 | $102.79 |
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87811
Detection test by immunoassay with direct visual observation for severe acute respiratory syndrome coronavirus 2 (covid-19)
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11 | 11 | $90.52 | $40.55 |
Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Azithromycin | Azithromycin | 28 | 136 | $104.54 | 25 |
| Fluticasone Propionate | Fluticasone Propionate | 23 | 695 | $228.28 | 22 |
| Albuterol Sulfate Hfa | Albuterol Sulfate | 23 | 425 | $474.39 | 19 |
| Methylprednisolone | Methylprednisolone | 13 | 78 | $95.56 | 11 |
| Amoxicillin-Clavulanate Potass | Amoxicillin/Potassium Clav | 13 | 88 | $72.68 | 13 |
| Cephalexin | Cephalexin | 12 | 74 | $49.51 | 12 |
| Nitrofurantoin Mono-Macro | Nitrofurantoin Monohyd/M-Cryst | 11 | 61 | $110.09 | โ |
Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2025-07-12NUCC Taxonomy Code: 363A00000X
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.
NUCC Taxonomy Code: 363A00000X
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - PHYSICIAN ASSISTANT
I20240312004110
CA
4880030840
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Medicare Group Practice Enrollments
Source: CMS Doctors and Clinicians National Downloadable File
Nellie Gail Urgent Care Medical Corp
315 S Tustin St, Orange, CA 928662501
Phone: 7144223056
Nellie Gail Urgent Care Medical Corp
27001 Moulton Pkwy, Laguna Hills, CA 926563626
Phone: 9496001907
Secondary Practice Locations
309 E 2nd St
Pomona, CA 917661854
Phone: 9094695335
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Physician Assistant
Physician Assistant (Certified)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 315 S TUSTIN ST, ORANGE, CA 928662501 (Tel: 7144223056)
Registered at 315 S TUSTIN ST, ORANGE, CA 928662501 (Tel: 7144223056)
Recorded as ANDY BUI, PA-C
Physician Assistant
Registered at 309 E 2ND ST, POMONA, CA 917661854 (Tel: 9094695335)
NPI status registered as active in NPPES database
Registered at 3336 GOODMAN DR, SANTA ANA, CA 927041484 (Tel: 7148902950)
Registered at 3336 GOODMAN DR, SANTA ANA, CA 927041484 (Tel: 7148902950)
Recorded as ANDY BUI, PA-S
Student in an Organized Health Care Education/Training Program
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Physician Assistants in Orange
- Tara Holguin, PHYSICIAN ASSISTANT
- Heather Corson, PA-C
- Rachel Montes, PA-C
- Eva Larson, PA
- Jordan Blair
- Kuljinder Dosanjh, PA
Mailing Address
315 S Tustin St
Orange, CA 928662501
Phone: 7144223056