Medicare Enrolled
Dr. Tam Nguyen, M.D.
Family Medicine · Union City, CA
Practice pattern: Clinical Cardiology
— Primarily office-based clinical cardiology
Low-engagement
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. Tam Nguyen is a family medicine specialist in Union City, CA, with 18 years of NPI registration. Based on federal Medicare data, Dr. Nguyen performed 3,116 Medicare services across 2,160 unique beneficiaries.
Between the years covered by Open Payments, Dr. Nguyen received a total of $1,192 from 13 pharmaceutical and/or device companies across 41 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in family medicine. Most payments are for meals and travel — low-value interactions common across virtually all practicing physicians. 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.
✓ 18 years in practice
▲ Top 6% volume in CA
$1,192 industry payments
Medicare Practice Summary
Medicare Utilization ↗3,116
Medicare services
Top 6% in CA for family medicine
2,160
Unique beneficiaries
$69
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~173 Medicare services per year of practice
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 |
|---|---|---|---|
| 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. |
878 | $98 | $314 |
| Advance care planning consultation, first 30 min A session focused on discussing and documenting future healthcare preferences and goals. This service covers the initial 30 minutes of the planning discussion. |
283 | $80 | $199 |
| Annual wellness visit, follow-up A follow-up annual wellness visit that includes a personalized prevention plan of service. |
245 | $154 | $337 |
| Annual depression screening | 235 | $23 | $50 |
| Drug injection, under skin or into muscle A procedure involving the administration of a medication or substance via injection into the subcutaneous tissue or muscle. |
170 | $12 | $64 |
| Hemoglobin A1c test (diabetes monitoring) A blood test that measures your average blood sugar levels over the past two to three months. |
141 | $9 | $28 |
| Obesity behavioral counseling, 15 minutes A 15-minute face-to-face session focused on behavioral counseling to help manage obesity. |
124 | $29 | $65 |
| Vitamin B-12 injection An injection of vitamin B-12 (cyanocobalamin) with a dose of up to 1000 mcg. |
122 | $1 | $12 |
| Flu vaccine administration This procedure involves the administration of the influenza virus vaccine. It covers the process of delivering the vaccine to the patient. |
110 | $37 | $53 |
| Annual intensive behavioral therapy for cardiovascular disease, 15 minutes A yearly, in-person session focused on intensive behavioral therapy to help manage cardiovascular disease. The session lasts for 15 minutes and is conducted with the patient individually. |
94 | $30 | $65 |
| Flu vaccine, high-dose High-dose seasonal influenza vaccine for adults aged 65 and older. Contains four times the antigen of standard-dose flu vaccines (60 mcg per strain), split-virus formulation, preservative-free, single-dose syringe. |
86 | $72 | $120 |
| Pneumococcal conjugate vaccine (PCV20) An intramuscular injection of the 20-valent pneumococcal conjugate vaccine. It is used to protect against diseases caused by Streptococcus pneumoniae bacteria. |
82 | $282 | $459 |
| Pneumonia vaccine administration This procedure involves the injection of a vaccine to protect against pneumococcal disease. It is administered by a healthcare provider. |
81 | $37 | $53 |
| Telephone medical discussion, 21-30 minutes A telephone conversation with a physician lasting between 21 and 30 minutes. This code covers the time spent discussing medical matters over the phone. |
69 | $78 | $313 |
| 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. |
57 | $12 | $42 |
| Steroid injection (triamcinolone) A 10 mg injection of triamcinolone acetonide, a corticosteroid medication. This code specifies the drug and dosage administered. |
53 | $1 | $18 |
| 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. |
50 | $64 | $242 |
| Methylprednisolone acetate injection, 80 mg An injection of 80 mg of methylprednisolone acetate, a corticosteroid medication. |
36 | $8 | $46 |
| Joint injection, major joint Removal of fluid from a large joint and/or injection of medication into the joint space. |
35 | $63 | $196 |
| Urinalysis, manual A manual laboratory examination of a urine sample to check for various substances and cells. |
34 | $3 | $28 |
| Smoking cessation counseling, 4-10 minutes A brief counseling session focused on helping patients quit smoking and tobacco use. The provider spends 4 to 10 minutes discussing strategies and support for cessation. |
32 | $17 | $38 |
| Home health plan of care certification Certification by a physician or allowed practitioner for Medicare-covered home health services under a home health plan of care. This includes contacting the home health agency and reviewing reports of patient status required by physicians. |
25 | $51 | $132 |
| Quadrivalent influenza vaccine, preservative-free A flu shot containing four strains of the influenza virus, formulated without preservatives, administered in a 0.5 ml dose. |
24 | $22 | $42 |
| Lung cancer screening counseling visit A visit to discuss the need for lung cancer screening using a low-dose CT scan. This service is used to determine eligibility and facilitate shared decision making. |
21 | $32 | $68 |
| 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. |
16 | $185 | $416 |
| Trigger point injection, 1-2 muscles A procedure involving the injection of medication into one or two specific muscles to treat trigger points. |
13 | $41 | $136 |
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. A higher procedure volume generally indicates more experience with that procedure.
Industry Payment Transparency
Open Payments through 2024 ↗$1,192
Total received (2018-2024)
Avg $170/year across 7 years
Top 24% in CA for family medicine
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
13
Companies
41
Individual payments
All payments are legal and publicly reported · Not evidence of wrongdoing · How to interpret →
Payment profile
Industry payments classified by relationship type. Not all payments are equal — research and consulting reflect different relationships than speaking programs or meals.
Meals & Travel
Food, beverages, travel, and lodging — typically low-value
$1,175 (98.5%)
Speaking / Promotional
Speaker programs, honoraria, and industry-sponsored educational events
$17 (1.5%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$87
2023
$341
2022
$78
2021
$253
2020
$165
2019
$214
2018
$54
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
ABBVIE INC.
$42
MERZ NORTH AMERICA, INC.
$28
PFIZER INC.
$17
Top 3 companies account for 100.0% of 2024 payments
All-time payments by company (2018-2024) ›
Galderma Laboratories, L.P.
$564
ABBVIE INC.
$192
Amgen Inc.
$128
MERZ NORTH AMERICA, INC.
$75
Merz North America, Inc.
$57
GlaxoSmithKline, LLC.
$35
Smith+Nephew, Inc.
$31
Sunovion Pharmaceuticals Inc.
$28
Sun Pharmaceutical Industries Inc.
$22
Biogen, Inc.
$18
PFIZER INC.
$17
Shield Therapeutics Inc
$13
Novo Nordisk Inc
$12
Top 3 companies account for 74.1% of all-time payments
Associated products mentioned in payments ›
ACCRUFER · Aimovig · COLLAGENASE SANTYL · KAPSPARGO · LONHALA MAGNAIR · MYFEMBREE · Otezla · Ozempic · TRELEGY ELLIPTA · TWYNEO · TYSABRI · XEOMIN · Xeomin
Should you be concerned? Payments from pharmaceutical and device companies are legal and common — 57% of U.S. physicians receive at least one. They often reflect legitimate consulting, research, or education. 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 →
Most payments (98%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
Geographic Context
Family medicine physicians within 10 mi
1,815
Per 100K population
109.9
County median income
$126,240
Nearest hospital
ST ROSE HOSPITAL
3.8 mi
3.8 mi
Data Sources
| Provider Registry | ✓ NPPES | Weekly updates |
| Medicare Enrollment | ✓ PECOS | Monthly updates |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not public | 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 clinical cardiology specialist, with above-average Medicare volume (top 6% in CA), with low-engagement industry engagement, with 18 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 office visit, established patient (30-39 min)?
Based on Medicare claims data, Dr. Nguyen performed 878 office visit, established patient (30-39 min) services. Research suggests that higher procedure volume is often associated with better outcomes, particularly for complex procedures. Note that Medicare data only captures patients aged 65 and older, so the total practice volume across all patients is likely higher.
Does Dr. Nguyen receive payments from pharmaceutical companies?
Yes. Dr. Nguyen received a total of $1,192 from 13 companies across 41 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common among physicians — 57% of all U.S. physicians receive at least one industry payment. 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 family medicine physicians in Union City?
Dr. Nguyen's average Medicare payment per service is $69. 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 a long track record of practice, Medicare participation, and industry disclosure. 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?
Each data source has its own update cycle. Provider registry data (NPPES) is updated weekly. Medicare enrollment (PECOS) is updated monthly. Medicare practice data has a ~2 year lag — the most recent available is typically 2 years prior. Industry payment data (Open Payments) is published annually, usually in June, covering the prior calendar year. We display the data date prominently on each section so you always know how current it is. See our data freshness policy →
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About this page
All data on this page is sourced verbatim from public federal records published by the U.S. Centers for Medicare & Medicaid Services (CMS): 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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