Dr. Thoi Thanh Vo , MD
General Practice • Westminster, CA
250 Hospital Cir
Westminster, CA 926833953
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 December 12, 2007; this date does not establish years in practice.
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Published CMS data list 13,712 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.
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Published Part B service records, 2024:
- 97110 — Therapy procedure using exercise to develop strength, endurance, range of motion, and flexibility: 3,755 service units.
- 97112 — Therapy procedure to re-educate brain-to-nerve-to-muscle function: 2,955 service units.
- 99454 — Remote monitoring of physiologic parameters, initial supply of devices with daily recordings or programmed alerts transmission, each 30 days: 1,334 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 18 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 86 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.
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Published Part D records, 2024:
- Zenpep (Lipase/Protease/Amylase) — 17 prescription fills, including refills.
- Cyclosporine — 16 prescription fills, including refills.
- Amoxicillin — 15 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 6 records in the table · Guide: How to read Medicare Part D prescriber data
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More Medicare Part B services than 95% of clinicians listed under General Practice in California (2024, 409 clinicians with data). Median for this group: 485. Middle half: 154 to 2,019.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 7,711 in 2020 to 13,712 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
250 Hospital Cir
Westminster, CA 926833953
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
CMS Doctors and Clinicians lists 1 group name: Thien Phuoc Medical Center Inc. 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
1970
What Public CMS Data Show
General Practice: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
416 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 $500,875 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 $387,260 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
94 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
$41,326 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: $74.33 across 4 records.
By nature of payment
- Food and Beverage: $74.33 across 4 records.
Reporting-company totals
- Aimmune Therapeutics, Inc.: $74.33 across 4 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
56 years (graduated 1970)
CMS Doctors and Clinicians data list 1970 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
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; Medicare.gov, “Does your provider accept Medicare as full payment?”
Telehealth (some services)
Recent Medicare claims show this clinician provided some services by telehealth, such as a video or phone visit.
You may be able to have some visits without going to the office. Ask which visits can be done by telehealth.
What this does not show: Telehealth (some services)
It does not mean all services are offered by telehealth, or that telehealth is covered by your plan.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Dr. Vo 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. Vo 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 Westminster 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 General Practice in California (2024, 409 clinicians with data). Median for this group: 485. Middle half: 154 to 2,019.
Too few clinicians listed under General Practice in Westminster have Medicare Part B data for 2024 to compare.
Medicare-allowed amount
A higher Medicare-allowed amount than 85% of clinicians listed under General Practice in California (2024, 409 clinicians with data). Median for this group: $45,658. Middle half: $15,010 to $165,277.
Too few clinicians listed under General Practice in Westminster have Medicare Part B data for 2024 to compare.
Paid by Medicare
A higher Medicare payment amount than 90% of clinicians listed under General Practice in California (2024, 409 clinicians with data). Median for this group: $32,130. Middle half: $11,436 to $131,972.
Too few clinicians listed under General Practice in Westminster have Medicare Part B data for 2024 to compare.
Medicare Part D prescriptions
Fewer Part D prescriptions than 75% of clinicians listed under General Practice in California (2024, 610 clinicians with data). Median for this group: 758. Middle half: 125 to 3,707.
Too few clinicians listed under General Practice in Westminster have Medicare Part D data for 2024 to compare.
Part D drug cost
Close to the middle for clinicians listed under General Practice in California (2024, 610 clinicians with data). Median for this group: $48,894. Middle half: $2,044 to $279,308.
Too few clinicians listed under General Practice in Westminster have Medicare Part D data for 2024 to compare.
10 active clinicians are listed under General Practice with a practice address in Westminster, CA (1,963 in California).
Addresses are self-reported to NPPES and may be out of date.
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
Medicare Part B services increased 78% from 7,711 in 2020 to 13,712 in 2024.
- 2020: 7,711
- 2021: 17,367
- 2022: 11,382
- 2023: 13,018
- 2024: 13,712
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Medicare-allowed amount
Medicare-allowed amount increased 23% from $406,424 in 2020 to $500,875 in 2024.
- 2020: $406,424
- 2021: $904,286
- 2022: $534,900
- 2023: $567,356
- 2024: $500,875
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Paid by Medicare
Paid by Medicare increased 29% from $299,090 in 2020 to $387,260 in 2024.
- 2020: $299,090
- 2021: $702,501
- 2022: $408,599
- 2023: $441,045
- 2024: $387,260
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Medicare Part D prescriptions
Medicare Part D prescriptions decreased 63% from 234 in 2020 to 86 in 2024.
- 2020: 234
- 2021: 691
- 2022: 195
- 2023: 582
- 2024: 86
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30-day fills
30-day fills decreased 62% from 248 in 2020 to 94 in 2024.
- 2020: 248
- 2021: 812
- 2022: 226
- 2023: 715
- 2024: 94
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Part D drug cost
Part D drug cost increased 12% from $36,860 in 2020 to $41,326 in 2024.
- 2020: $36,860
- 2021: $222,176
- 2022: $75,486
- 2023: $231,430
- 2024: $41,326
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $365.37 in 2019 to $74.33 in 2025.
- 2019: $365.37
- 2020: $136.68
- 2022: $112.44
- 2024: $13.59
- 2025: $74.33
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 · 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): fewer than 11 records totaling $74.33.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Aimmune Therapeutics, Inc. |
Food and Beverage
In-kind items and services
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ZENPEP | General | $23.07 |
| Aimmune Therapeutics, Inc. |
Food and Beverage
In-kind items and services
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ZENPEP | General | $19.06 |
| Aimmune Therapeutics, Inc. |
Food and Beverage
In-kind items and services
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ZENPEP | General | $18.31 |
| Aimmune Therapeutics, Inc. |
Food and Beverage
In-kind items and services
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ZENPEP | General | $13.89 |
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 |
|---|---|---|---|---|
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97110
Therapy procedure using exercise to develop strength, endurance, range of motion, and flexibility, each 15 minutes
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3,755 | 228 | $40.69 | $24.74 |
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97112
Therapy procedure to re-educate brain-to-nerve-to-muscle function, each 15 minutes
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2,955 | 210 | $38.60 | $29.84 |
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99454
Remote monitoring of physiologic parameters, initial supply of devices with daily recordings or programmed alerts transmission, each 30 days
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1,334 | 160 | $68.98 | $55.28 |
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99457
Management using the results of remote vital sign monitoring per calendar month, first 20 minutes
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1,324 | 160 | $44.09 | $31.45 |
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99458
Management using the results of remote vital sign monitoring per calendar month, each additional 20 minutes
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1,315 | 160 | $43.98 | $31.32 |
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97140
Therapy procedure using manual technique, each 15 minutes
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951 | 149 | $50.00 | $21.21 |
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97166
Evaluation for occupational therapy, typically 45 minutes
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373 | 116 | $300.00 | $105.72 |
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96360
Infusion into a vein for hydration, 31-60 minutes
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337 | 123 | $75.00 | $35.28 |
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96361
Infusion into a vein for hydration, each additional hour
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337 | 123 | $50.00 | $13.24 |
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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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298 | 120 | $120.00 | $94.25 |
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97535
Training for self-care or home management, each 15 minutes
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219 | 107 | $50.00 | $34.16 |
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99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
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197 | 134 | $150.00 | $134.35 |
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11765
Removal of skin of fingernail or toenail
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125 | 51 | $120.00 | $101.56 |
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99453
Remote monitoring of physiologic parameters, initial set-up and patient education on use of equipment
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100 | 100 | $30.00 | $22.80 |
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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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43 | 43 | $250.00 | $120.26 |
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J3420
Injection, vitamin b-12 cyanocobalamin, up to 1000 mcg
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25 | 23 | $31.00 | $1.24 |
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93925
Ultrasound of leg arteries or artery grafts
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13 | 13 | $369.23 | $264.29 |
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93307
Ultrasound of heart
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11 | 11 | $300.00 | $147.89 |
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 |
|---|---|---|---|---|---|
| Zenpep | Lipase/Protease/Amylase | 17 | 595 | $25,673.81 | — |
| Cyclosporine | Cyclosporine | 16 | 540 | $5,696.82 | — |
| Amoxicillin | Amoxicillin | 15 | 150 | $28.88 | — |
| Restasis | Cyclosporine | 13 | 480 | $9,728.94 | — |
| Celecoxib | Celecoxib | 13 | 390 | $182.45 | — |
| Azithromycin | Azithromycin | 12 | 60 | $15.36 | 11 |
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: 2021-06-21NUCC Taxonomy Code: 208D00000X
A physician who specializes in the general practice of diagnosing, treating, and managing patients with a variety of illnesses and conditions.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - GENERAL PRACTICE
I20051117001057
CA
6800815820
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
Thien Phuoc Medical Center Inc
250 Hospital Cir, Westminster, CA 926833953
Phone: 7146225593
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 250 HOSPITAL CIR, WESTMINSTER, CA 926833953 (Tel: 7148906644)
Registered at 250 HOSPITAL CIR, WESTMINSTER, CA 926833953 (Tel: 7148906644)
NPI status registered as active in NPPES database
Registered at 7838 WESTMINSTER AVE, WESTMINSTER, CA 92683 (Tel: 7148906644)
Registered at 7838 WESTMINSTER AVE, WESTMINSTER, CA 92683 (Tel: 7148906644)
Recorded as THOI VO, MD
General Practice (license number reported to NPPES: CA A39943)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other General Practices in Westminster
- Dr. Joo Yang, MD
- Dr. Loi Luu, MD
- Dr. Philip Zhou, DO
- Dr. Son Truong, MD
- Dr. Toufan Mehryan, MD
- Dr. Thu Hoa Van, MD
Mailing Address
250 Hospital Cir
Westminster, CA 926833953
Phone: 7148906644