Dr. Trung D Bui , MD
Surgery • Thousand Oaks, CA
2220 Lynn Rd, 102
Thousand Oaks, CA 913601904
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
-
NPI assigned on November 26, 2007; this date does not establish years in practice.
-
Published CMS data list 3,589 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Published rows only; this is not a quality measure.
-
Published Part B service records, 2024:
- 93970 — Ultrasound study of arm or leg veins with compression and maneuvers: 357 service units.
- 99213 — Established patient outpatient office visit: 315 service units.
- 99213 — Established patient outpatient office visit: 307 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See all 38 records in the table · Guide: How to read Medicare Part B data
-
Published CMS data list 242 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Published rows only; this is not a quality measure.
-
Published Part D records, 2024:
- Eliquis (Apixaban) — 92 prescription fills, including refills.
- Cilostazol — 40 prescription fills, including refills.
- Clopidogrel (Clopidogrel Bisulfate) — 31 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – 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 · Guide: How to read Medicare Part D prescriber data
-
More Medicare Part B services than 95% of clinicians listed under Surgery in California (2024, 1,332 clinicians with data). Median for this group: 213. Middle half: 102 to 403.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
-
Medicare Part B services went from 2,791 in 2020 to 3,589 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
2220 Lynn Rd
102
Thousand Oaks, CA 913601904
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026
Medical College Of Wisconsin
2002
What Public CMS Data Show
Surgery: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
1,272 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 – by Provider, 2024.
Medicare-allowed amount
About $655,868 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 – by Provider and Service, 2024.
Paid by Medicare
About $508,973 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 – by Provider and Service, 2024.
30-day fills
367 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
$77,920 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 – by Provider and Drug, 2024.
Open Payments general payments, program year 2025
All general payments: $1,966.40 across 37 records.
By nature of payment
- Food and Beverage: $1,966.40 across 37 records.
Reporting-company totals (3 largest of 22)
- Medtronic, Inc.: $253.83 across 7 records.
- MIMEDX Group, Inc.: $206.35 across 2 records.
- Philips North America LLC: $193.40 across 3 records.
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
24 years (graduated 2002)
CMS Doctors and Clinicians data list 2002 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, CMS release of October 2, 2026.
NPI first issued
2007
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, CMS release of October 2, 2026; Medicare.gov, “Does your provider accept Medicare as full payment?”
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, CMS release of October 2, 2026.
Enrolled in Medicare (PECOS)
Dr. 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 Dr. 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 Thousand Oaks and California
Billing and prescribing volume is not a quality rating.
Medicare Part B services
More Medicare Part B services than 95% of clinicians listed under Surgery in California (2024, 1,332 clinicians with data). Median for this group: 213. Middle half: 102 to 403.
Too few clinicians listed under Surgery in Thousand Oaks have Medicare Part B data for 2024 to compare.
Medicare-allowed amount
A higher Medicare-allowed amount than 95% of clinicians listed under Surgery in California (2024, 1,332 clinicians with data). Median for this group: $32,273. Middle half: $13,192 to $65,819.
Too few clinicians listed under Surgery in Thousand Oaks have Medicare Part B data for 2024 to compare.
Paid by Medicare
A higher Medicare payment amount than 95% of clinicians listed under Surgery in California (2024, 1,332 clinicians with data). Median for this group: $24,805. Middle half: $10,200 to $50,338.
Too few clinicians listed under Surgery in Thousand Oaks have Medicare Part B data for 2024 to compare.
Medicare Part D prescriptions
More Part D prescriptions than 90% of clinicians listed under Surgery in California (2024, 1,324 clinicians with data). Median for this group: 54. Middle half: 26 to 102.
Too few clinicians listed under Surgery in Thousand Oaks have Medicare Part D data for 2024 to compare.
Part D drug cost
A higher Part D drug cost than 95% of clinicians listed under Surgery in California (2024, 1,324 clinicians with data). Median for this group: $345. Middle half: $125 to $1,120.
Too few clinicians listed under Surgery in Thousand Oaks have Medicare Part D data for 2024 to compare.
12 active clinicians are listed under Surgery with a practice address in Thousand Oaks, CA (3,129 in California).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Thousand Oaks
25% of these 12 clinicians have the CMS telehealth indicator.
66.7% of these 12 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.
-
Medicare Part B services
Medicare Part B services increased 29% from 2,791 in 2020 to 3,589 in 2024.
- 2020: 2,791
- 2021: 3,799
- 2022: 3,811
- 2023: 3,926
- 2024: 3,589
-
Medicare-allowed amount
Medicare-allowed amount stayed about the same: $660,136 in 2020 and $655,868 in 2024.
- 2020: $660,136
- 2021: $774,271
- 2022: $740,590
- 2023: $771,750
- 2024: $655,868
-
Paid by Medicare
Paid by Medicare stayed about the same: $520,491 in 2020 and $508,973 in 2024.
- 2020: $520,491
- 2021: $609,606
- 2022: $577,924
- 2023: $601,609
- 2024: $508,973
-
Medicare Part D prescriptions
Medicare Part D prescriptions increased 102% from 120 in 2020 to 242 in 2024.
- 2020: 120
- 2021: 139
- 2022: 135
- 2023: 213
- 2024: 242
-
30-day fills
30-day fills increased 77% from 208 in 2020 to 367 in 2024.
- 2020: 208
- 2021: 250
- 2022: 251
- 2023: 341
- 2024: 367
-
Part D drug cost
Part D drug cost increased 103% from $38,407 in 2020 to $77,920 in 2024.
- 2020: $38,407
- 2021: $61,036
- 2022: $39,136
- 2023: $64,721
- 2024: $77,920
-
Industry payments (Open Payments)
Industry payments (Open Payments) varied from year to year: $2,075.18 in 2021 and $1,966.40 in 2025.
- 2021: $2,075.18
- 2022: $882.97
- 2023: $2,078.49
- 2024: $1,435.91
- 2025: $1,966.40
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS release of October 2, 2026, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · 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 – December 31, 2025): 37 records totaling $1,966.40.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| MIMEDX Group, Inc. |
Food and Beverage
In-kind items and services
|
— | General | $183.12 |
| W. L. Gore & Associates, Inc. |
Food and Beverage
In-kind items and services
|
EXCLUDER Conformable AAA Endoprosthesis with Active Control | General | $172.33 |
| ETS Wound Care LLC |
Food and Beverage
Cash or cash equivalent
|
MIRRAGEN ADVANCED WOUND MATRIX | General | $150.15 |
| Aroa Biosurgery Incorporated |
Food and Beverage
Cash or cash equivalent
|
— | General | $130.47 |
| Integra LifeSciences Corporation |
Food and Beverage
In-kind items and services
|
OMNIGRAFT | General | $102.19 |
| Abbott Laboratories |
Food and Beverage
In-kind items and services
|
ESPRIT | General | $99.88 |
| Access Pro Medical, LLC |
Food and Beverage
In-kind items and services
|
MATRIDERM | General | $98.01 |
| Medtronic, Inc. |
Food and Beverage
In-kind items and services
|
VENASEAL | General | $96.22 |
| Philips North America LLC |
Food and Beverage
Cash or cash equivalent
|
IV Other | General | $90.61 |
| Organogenesis Inc. |
Food and Beverage
In-kind items and services
|
PURAPLY WOUND MATRIX | General | $90.02 |
| Access Pro Medical, LLC |
Food and Beverage
In-kind items and services
|
MATRIDERM | General | $55.56 |
| Philips North America LLC |
Food and Beverage
Cash or cash equivalent
|
IV Other | General | $55.00 |
| Philips North America LLC |
Food and Beverage
Cash or cash equivalent
|
IV Other | General | $47.79 |
| Boston Scientific Corporation |
Food and Beverage
In-kind items and services
|
General - Vascular Intervention | General | $38.18 |
| Medtronic, Inc. |
Food and Beverage
In-kind items and services
|
ENDURANT IIS | General | $35.48 |
| Integra LifeSciences Corporation |
Food and Beverage
In-kind items and services
|
Integra | General | $34.62 |
| LeMaitre Vascular, Inc. |
Food and Beverage
Cash or cash equivalent
|
ARTEGRAFT VASCULAR GRAFT | General | $32.12 |
| Koya Medical, Inc. |
Food and Beverage
Cash or cash equivalent
|
KOYA MEDICAL | General | $31.43 |
| Medtronic, Inc. |
Food and Beverage
In-kind items and services
|
ENDURANT IIS | General | $30.90 |
| Acera Surgical, Inc. |
Food and Beverage
In-kind items and services
|
Restrata Wound Matrix | General | $30.02 |
| Reflow Medical Inc |
Food and Beverage
Cash or cash equivalent
|
— | General | $28.80 |
| Medtronic, Inc. |
Food and Beverage
In-kind items and services
|
VENASEAL | General | $28.73 |
| Bolton Medical Inc |
Food and Beverage
In-kind items and services
|
TREO ABDOMINAL STENT-GRAFT SYSTEM | General | $25.91 |
| Smith+Nephew, Inc. |
Food and Beverage
In-kind items and services
|
GRAFIX PL | General | $25.46 |
| Urgo Medical North America, LLC |
Food and Beverage
In-kind items and services
|
URGOCLEAN AG | General | $24.89 |
(top 25 shown)
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016–2023 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 – by Provider and Service data, 2017–2024; 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 |
|---|---|---|---|---|
|
93970
Ultrasound study of arm or leg veins with compression and maneuvers
|
357 | 336 | $50.00 | $32.84 |
|
99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
|
315 | 77 | $120.00 | $67.39 |
|
99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
|
307 | 212 | $120.00 | $97.16 |
|
99222
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes
|
237 | 203 | $250.00 | $132.63 |
|
99441
Telephone medical discussion with physician, 5-10 minutes
|
212 | 198 | $80.00 | $60.88 |
|
93971
Ultrasound study of one arm or leg veins with compression and maneuvers
|
209 | 127 | $374.00 | $134.32 |
|
99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
|
201 | 163 | $176.00 | $136.51 |
|
93971
Ultrasound study of one arm or leg veins with compression and maneuvers
|
169 | 161 | $50.00 | $21.13 |
|
99203
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more
|
154 | 154 | $204.00 | $118.61 |
|
93970
Ultrasound study of arm or leg veins with compression and maneuvers
|
135 | 134 | $374.00 | $207.41 |
|
36482
Chemical destruction of first incompetent vein of arm or leg using imaging guidance
|
133 | 75 | $4850.00 | $1871.70 |
|
99232
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes
|
99 | 50 | $120.00 | $80.19 |
|
93880
Ultrasound of both sides of head and neck blood flow
|
83 | 83 | $50.00 | $37.99 |
|
76937
Ultrasonic guidance for blood vessel access
|
76 | 62 | $34.00 | $13.79 |
|
99204
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more
|
76 | 76 | $250.00 | $176.58 |
|
37253
Ultrasound evaluation of blood vessel with review by radiologist, each additional vessel
|
71 | 30 | $422.54 | $185.81 |
|
76937
Ultrasonic guidance for blood vessel access
|
66 | 58 | $59.21 | $41.91 |
|
99203
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more
|
56 | 56 | $204.00 | $83.33 |
|
99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
|
56 | 34 | $176.00 | $99.29 |
|
36010
Insertion of tube into vena cava
|
54 | 48 | $366.30 | $72.54 |
|
11042
Removal of skin and tissue, 20.0 sq cm or less
|
51 | 28 | $130.00 | $61.84 |
|
93990
Ultrasound of hemodialysis access
|
47 | 33 | $374.00 | $145.86 |
|
29581
Application of vein wound compression bandages on lower leg, ankle, and foot
|
45 | 13 | $200.00 | $96.50 |
|
36010
Insertion of tube into vena cava
|
45 | 40 | $1000.00 | $457.22 |
|
93880
Ultrasound of both sides of head and neck blood flow
|
41 | 40 | $588.00 | $210.27 |
(top 25 shown)
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 |
|---|---|---|---|---|---|
| Eliquis | Apixaban | 92 | 2,842 | $57,281.98 | 22 |
| Cilostazol | Cilostazol | 40 | 2,580 | $1,122.62 | 12 |
| Clopidogrel | Clopidogrel Bisulfate | 31 | 2,670 | $275.61 | 15 |
| Hydrocodone-Acetaminophen | Hydrocodone/Acetaminophen | 26 | 134 | $231.40 | 18 |
| Xarelto | Rivaroxaban | 18 | 1,050 | $18,861.80 | — |
| Diazepam | Diazepam | 18 | 24 | $9.68 | 16 |
| Amoxicillin-Clavulanate Potass | Amoxicillin/Potassium Clav | 17 | 200 | $137.39 | 15 |
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: 2026-04-03NUCC Taxonomy Code: 208600000X
A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - VASCULAR SURGERY
I20110126000349
CA
4789863580
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Surgery - Vascular Surgery
Doctor of Medicine (M.D.)
Career & Practice History
NPI enumerated November 26, 2007.
No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to November 2026.
NPI Administrative Meta
Other Surgery Specialists in Thousand Oaks
- Dr. Lauren Poliakin, MD
- Dr. Andrea Pakula, MD
- Dr. Mehran Mirkazemi, DO
- Dr. Patrick Reiten, MD
- Dr. Amir-Hossein Mehran, MD
- Dr. Makrouhi Kademian, MD
Mailing Address
2220 Lynn Rd, Suite 102
Thousand Oaks, CA 913601904
Phone: 8054969727