Medicare Enrolled
Dr. Hoang Nguyen, M.D.
Internal Medicine · Fountain Valley, CA
Practice pattern: Mixed Practice
— Diverse clinical practice across multiple procedure types
Very High
DATA COVERAGE
Data in 4 of 4 federal sources
Measures public federal data availability — not provider quality
Informational, not a quality rating.
This page presents federal public records about Dr. Nguyen from CMS (NPPES, Open Payments, Medicare Provider Utilization, PECOS). It is not medical advice, an endorsement, or a judgment of clinical quality. Always consult the provider directly and a licensed clinician for medical decisions. Read methodology →
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What this data tells you about Dr. Nguyen
Dr. Hoang Nguyen is an internal medicine specialist in Fountain Valley, CA, with 20 years of NPI registration. Based on federal Medicare data, Dr. Nguyen performed 51,316 Medicare services in 2023. These records do not provide a deduplicated patient total.
Between the years covered by Open Payments, Dr. Nguyen received a total of $2,168 from 21 pharmaceutical and/or device companies across 93 payment records. A record can group multiple payments. These transfers are publicly reported through CMS Open Payments. Disclosure alone does not establish their effect on care. A reliable breakdown by payment category is not available in this snapshot. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Nguyen is Very High — reflecting how much public federal data is available about this provider. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.
✓ 20 years of NPI registration
▲ Top 0% volume in CA
$2,168 industry payments
Medicare Practice Summary — 2023
Medicare Utilization ↗51,316
Medicare services
Top 0% in CA for internal medicine
Not available
Unique patients (not deduplicated)
$29
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
Top procedures by volume
Ranked by number of services performed for Medicare patients. Avg. submitted charge is what the provider billed; avg. Medicare payment is what CMS paid.
| Procedure | Volume | Avg. paid | Avg. submitted |
|---|---|---|---|
| Joint lubricant injection (GenVisc) An injection of hyaluronan or its derivative into a joint space to provide lubrication and cushioning. |
28,839 | $6 | $25 |
| Office visit, established patient (30-39 min) A follow-up office visit for an existing patient lasting between 30 and 39 minutes. The visit involves medical evaluation and management of the patient's condition. |
3,516 | $82 | $250 |
| Contrast dye for imaging (iodine-based) A contrast agent containing 300-399 mg/ml of iodine used to enhance imaging studies. It is administered per milliliter to improve the visibility of internal structures. |
2,229 | $0 | $76 |
| Neuromuscular re-education therapy, per 15 min A therapy procedure designed to re-educate the functional connection between the brain, nerves, and muscles. It is billed in 15-minute increments. |
2,057 | $25 | $46 |
| Manual therapy (hands-on treatment), per 15 min | 1,351 | $17 | $78 |
| Physical therapy exercise, per 15 min A therapy session using exercises to improve strength, endurance, range of motion, and flexibility. Each 15-minute unit is billed separately. |
1,349 | $18 | $48 |
| Remote vital sign monitoring management, each additional 20 minutes This code covers the time spent by a provider managing patient data from remote vital sign monitoring devices. It applies to each additional 20-minute increment beyond the initial monthly service period. |
1,154 | $31 | $236 |
| Knee joint contrast injection for imaging A contrast dye is injected into the knee joint to enhance visibility during medical imaging procedures. |
1,130 | $166 | $595 |
| Radiologist review of knee joint image A radiologist examines and interprets images of the knee joint to assess its condition. |
1,125 | $113 | $590 |
| Fluoroscopic guidance for needle placement Use of real-time X-ray imaging to guide the precise placement of a needle during a medical procedure. |
1,122 | $104 | $491 |
| Joint injection, major joint Removal of fluid from a large joint and/or injection of medication into the joint space. |
1,045 | $28 | $439 |
| Office visit, established patient (20-29 min) An office visit for an existing patient lasting between 20 and 29 minutes. The visit involves medical evaluation and management of the patient's condition. |
1,038 | $57 | $250 |
| Blood draw (venipuncture) Insertion of a needle into a vein to collect a blood sample. |
735 | $8 | $50 |
| Office visit, established patient (10-19 min) An office visit for an existing patient lasting 10 to 19 minutes. The visit involves medical evaluation and management of the patient's condition. |
637 | $47 | $84 |
| Remote patient monitoring management, 20 min/month Management based on results from remote vital sign monitoring for the first 20 minutes per calendar month. |
582 | $38 | $237 |
| Remote patient monitoring device, 30 days Initial setup of devices for remote monitoring of body functions with daily data transmission or alerts. This service covers the first 30 days of the monitoring period. |
521 | $41 | $234 |
| Quadrivalent influenza vaccine, cell culture-derived A flu shot that protects against four strains of the influenza virus. It is produced using cell culture technology rather than traditional egg-based methods. |
309 | $30 | $60 |
| Flu vaccine administration This procedure involves the administration of the influenza virus vaccine. It covers the process of delivering the vaccine to the patient. |
308 | $34 | $51 |
| Dexamethasone injection (steroid) An injection of dexamethasone sodium phosphate, a corticosteroid medication, administered in a dose of 1 milligram. |
303 | $0 | $50 |
| Annual wellness visit, follow-up A follow-up annual wellness visit that includes a personalized prevention plan of service. |
238 | $135 | $299 |
| Ultrasound of head and neck blood flow, bilateral An ultrasound exam that uses sound waves to visualize and assess blood flow in the vessels of both the head and the neck. |
205 | $169 | $387 |
| Ultrasound of abdomen and pelvis blood flow An ultrasound exam that uses sound waves to visualize and assess blood flow through the arteries and veins in the abdomen and pelvis. |
205 | $127 | $360 |
| Ultrasound of leg arteries or grafts An imaging test that uses sound waves to create pictures of the blood vessels in the legs or any surgical grafts present. |
203 | $213 | $380 |
| Echocardiogram, transthoracic An ultrasound of the heart that uses color to show blood flow, rate, direction, and valve function. |
200 | $166 | $400 |
| Complete ultrasound of retroperitoneum An ultrasound examination of the structures located behind the abdominal cavity. |
194 | $96 | $310 |
| Knee X-ray, 4 or more views An imaging test using X-rays to create multiple pictures of the knee joint from different angles. |
125 | $35 | $270 |
| Complete ultrasound of abdomen A diagnostic imaging test that uses sound waves to create detailed pictures of the organs and structures within the abdomen. |
91 | $98 | $343 |
| Transrectal ultrasound of the pelvis An ultrasound imaging procedure where a probe is inserted into the rectum to visualize pelvic structures. |
67 | $122 | $300 |
| Limited retroperitoneal ultrasound A focused ultrasound exam of the area behind the abdominal cavity to evaluate specific structures. |
60 | $40 | $320 |
| Ultrasound of arm and leg arteries This procedure uses sound waves to create images of the blood vessels in the arms and legs. It allows healthcare providers to examine the structure and blood flow within these arteries. |
47 | $68 | $600 |
| Autonomic nervous system testing with heart rate response to deep breathing This test evaluates the function of the autonomic nervous system by measuring how the heart rate changes in response to deep breathing. |
47 | $65 | $600 |
| Autonomic nervous system function test This test evaluates how well the sympathetic nervous system is functioning. It assesses the automatic control of bodily processes such as heart rate and blood pressure. |
46 | $101 | $600 |
| Destruction of skin growths (warts/lesions), 1-14 This procedure involves the removal or destruction of one to fourteen skin growths. It is a minor surgical intervention performed on the skin surface. |
43 | $82 | $298 |
| Bladder ultrasound after voiding An ultrasound scan performed after urination to measure the amount of urine remaining in the bladder. |
41 | $9 | $80 |
| Transitional care management, high complexity Coordination of care for a patient transitioning from a short-term hospital stay or other facility to home or another care setting. This service addresses a high-complexity medical problem. |
39 | $231 | $300 |
| New patient office visit (45-59 min) An initial office visit for a new patient lasting between 45 and 59 minutes. This code covers the total time spent by the physician or qualified healthcare professional on the date of the encounter. |
32 | $122 | $279 |
| Electrocardiogram (EKG), 12-lead A standard heart rhythm test using at least 12 leads to record electrical activity. A healthcare provider interprets the results and provides a written report. |
26 | $11 | $100 |
| Annual wellness visit, initial visit A yearly appointment to review your health and create a personalized prevention plan. This initial visit focuses on preventive care and health assessment. |
18 | $172 | $300 |
| Ultrasound of head and neck soft tissue This procedure uses sound waves to create images of the soft tissues in the head and neck area. It allows for the visualization of structures beneath the skin without using radiation. |
14 | $99 | $274 |
| Initial preventive physical examination, new Medicare beneficiary A comprehensive preventive health visit for new Medicare beneficiaries during their first 12 months of enrollment. The service is conducted as a face-to-face visit and is limited to preventive care. |
13 | $153 | $222 |
| Remote physiologic monitoring setup and education Initial setup of remote monitoring equipment and patient education on its use. |
12 | $16 | $250 |
How to read this data: This reflects Medicare patients only (typically 65+). Payment amounts are what Medicare paid the provider, not your out-of-pocket cost. These counts do not measure clinical quality or years of experience.
0.4% high complexity
67.6% medium
32.0% routine
Industry Payment Transparency
Open Payments through 2024 ↗$2,168
Total received (2018-2024)
Avg $310/year across 7 years
Top 25% in CA for internal medicine
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
21
Companies
93
Payment records
Payments are publicly reported; disclosure does not establish legality · Not evidence of wrongdoing · How to interpret →
Payment categories are unavailable while the source breakdown is being rebuilt. Company and year totals do not identify how much belongs to each category.
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$287
2023
$372
2022
$290
2021
$351
2020
$83
2019
$348
2018
$437
Payments by company (2024)
Gilead Sciences, Inc.
$125
ABIOMED
$85
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp)
$37
Janssen Pharmaceuticals, Inc
$21
Astellas Pharma US Inc
$19
Top 3 companies account for 86.0% of 2024 payments
All-time payments by company (2018-2024) ›
Janssen Pharmaceuticals, Inc
$324
ABBVIE INC.
$266
AbbVie Inc.
$251
Novo Nordisk Inc
$172
Abbott Laboratories
$169
SANOFI-AVENTIS U.S. LLC
$138
Gilead Sciences, Inc.
$125
Amgen Inc.
$125
PORTOLA PHARMACEUTICALS, INC.
$104
ABIOMED
$85
Allergan Inc.
$78
AstraZeneca Pharmaceuticals LP
$67
Boston Scientific Corporation
$62
GENZYME CORPORATION
$45
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp)
$37
Boehringer Ingelheim Pharmaceuticals, Inc.
$35
Edwards Lifesciences Corporation
$23
Astellas Pharma US Inc
$19
CathWorks, Inc.
$17
BOSTON SCIENTIFIC CORPORATION
$14
Relypsa, Inc.
$13
Top 3 companies account for 38.8% of all-time payments
Associated products mentioned in payments ›
BEVYXXA · BREZTRI · BYDUREON · BYSTOLIC · CREON · Confirm Rx · DISEASE STATE · FARXIGA · FFRangio · GENERAL TACHY · GENERAL - THERAPIES · Impella · LINZESS · LUX-Dx Insertable Cardiac Monitor · LifeVest · MULTAQ · NAMZARIC · Ozempic · PRADAXA · PRALUENT · Perclose ProGlide suture mediated closure system · Repatha · SAPIEN 3 Ultra RESILIA · SYMBICORT · TRADJENTA · Tresiba · VIBERZI · VRAYLAR · Veltassa · Vemlidy · Victoza · XARELTO · Xtandi
Should you be concerned? Industry payments are disclosed through CMS Open Payments. Disclosure alone does not establish their purpose, legality, or effect on care. What matters is whether a recommended drug or device appears in your doctor's payment records. If so, consider asking your doctor about it. How to interpret this data →
Geographic Context
Internal medicine physicians in nearby ZIP areas
2,708
County median income
$113,702
Nearest hospital to ZIP centroid (approximate)
UCI HEALTH - FOUNTAIN VALLEY
0.0 mi
0.0 mi
Data Sources
| Provider Registry | ✓ NPPES | NPPES snapshot; verify current record |
| Medicare Enrollment | ✓ PECOS | PECOS snapshot |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not included | N/A |
This provider has data in 4 of 4 available federal datasets, with a Data Coverage level of Very High. This reflects how much public data is available about a provider. How we calculate this →
Summary
Dr. Nguyen is a mixed practice specialist, with above-average Medicare volume (top 0% in CA), with 20 years of NPI registration.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
Is Dr. Nguyen experienced with joint lubricant injection (genvisc)?
Based on Medicare claims data, Dr. Nguyen performed 28,839 joint lubricant injection (genvisc) services. These records cover Medicare fee-for-service activity, including eligible younger beneficiaries; they do not measure total practice volume or clinical quality.
Does Dr. Nguyen receive payments from pharmaceutical companies?
Yes. Dr. Nguyen received a total of $2,168 from 21 companies across 93 payment records. A record can group multiple payments. These transfers are publicly disclosed through CMS Open Payments. Disclosure alone does not establish their legality or effect on care. Patients may wish to ask their doctor about these relationships, especially if a recommended drug or device appears in the payment records.
How do Dr. Nguyen's costs compare to other internal medicine physicians in Fountain Valley?
Dr. Nguyen's average Medicare payment per service is $29. Note that these figures represent what Medicare pays, not your out-of-pocket cost, which depends on your specific insurance plan and deductible. Procedure-level data above shows both what was submitted and what Medicare paid for each service type.
What does Data Coverage mean?
Data Coverage (currently Very High for Dr. Nguyen) measures how much public federal data is available about a provider. It is not a quality rating. A "Very High" or "High" level means the provider has data across multiple federal sources (NPPES, PECOS, Medicare Utilization, Open Payments), indicating the presence of registry, enrollment, activity or payment records, not verified experience or clinical quality. A "Low" or "Moderate" level may simply mean the provider is newer, does not see Medicare patients, or has not received any industry payments — none of which are inherently negative. Read our full methodology →
Is this data up to date?
Source publication dates and the snapshots loaded on this site can differ. Rebuilding a page does not refresh its source records. Check the Medicare reporting year and the payment interval shown above; consult the linked official sources for newer releases and current registry details. See our data freshness policy →
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About this page
This page combines public CMS records with calculated summaries and explanatory procedure labels. These transformations are not verbatim federal records. Sources: NPPES ↗, Open Payments ↗, Medicare Provider Utilization ↗, and PECOS. Publication is mandated by the Physician Payments Sunshine Act (§6002 ACA, 42 U.S.C. §1320a-7h) and the Freedom of Information Act.
This page is not medical advice, an endorsement, a recommendation, or a quality rating. Data Coverage reflects data completeness — how much federal information exists for this provider — not clinical performance, patient outcomes, or quality of care. Always verify information directly with the provider and consult a licensed clinician before making medical decisions.
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