Tam K Nguyen, M.D.
Tam K Nguyen is an Internal Medicine specialist based in Garden Grove, CA with over 32 years of clinical experience. Medicare-enrolled per CMS records and offers virtual telehealth visits.
Patients across CA can see Tam K Nguyen, M.D. in person in Garden Grove or via virtual visit — no travel required. He graduated from Tulane University School of Medicine in 1994 and has 32+ years of clinical experience. He regularly sees Medicare patients with hypertension, high cholesterol, and diabetes (per CMS claims data).
Older · 1128dNPPES updated 2023-04-22 · verify NPI on CMS · Verify license at Medical Board of California
Contact & Location
Practice Location
12221 Brookhurst St Ste 100, Garden Grove, CA 92840-2848
How Does This Doctor Compare?
Generic Rx
↑ Higher = better74.5%
California avg: 83.3 · US avg: 82.8
⚠ Lower than most doctors nationally(-8.3 pts)
How often this doctor prescribes affordable generic drugs instead of expensive brand-name ones.
Medicare Patients
97
Unique beneficiaries
Standard volumePrescription Recipients
245
Patients prescribed
Prescriptions Written
3,653
Total claims
Total Medicare drug cost: $959k
Percentile rankings compared against 9,360 reporting peers in California.
Data Note: Sourced from CMS Medicare Provider Utilization & Payment Data. Percentile rankings compare this provider against all peers with reported data in the same state. Updated annually to reflect the latest federal reporting cycle.
What This Doctor Treats Most
Based on Medicare claims data — here's what patients commonly see this doctor for
Based on Medicare data, this doctor primarily manages Hypertension, High Cholesterol, and Diabetes.
High blood pressure — a leading risk factor for heart disease and stroke
US avg: 70.2%↑ More patients than average (+5%) — a focus area for this doctor
Elevated cholesterol or triglycerides that increase heart disease risk
US avg: 70.4%↑ More patients than average (+5%) — a focus area for this doctor
A condition where the body cannot properly regulate blood sugar levels
US avg: 34.5%↑ More patients than average (+34%) — a focus area for this doctor
Joint inflammation causing pain, swelling, and stiffness
US avg: 49.3%↑ More patients than average (+16%) — a focus area for this doctor
Gradual loss of kidney function over time, often linked to diabetes or hypertension
US avg: 29.6%↑ More patients than average (+25%) — a focus area for this doctor
Chronic Obstructive Pulmonary Disease — a group of lung diseases that block airflow
US avg: 20.4%↑ More patients than average (+26%) — a focus area for this doctor
Progressive brain disorders causing memory loss and cognitive decline
Reduced blood flow to the heart muscle, commonly known as coronary artery disease
US avg: 31.7%↑ More patients than average (+5%) — a focus area for this doctor
Percentage of this provider's Medicare patients diagnosed with each condition. Source: CMS Utilization Data.
$122 received from industry
6 transactions reported in 2024 ·Low tier
Payments include consulting fees, speaking honoraria, food & beverage, travel, research support, and ownership interests from drug and medical device manufacturers. Disclosure is required by the federal Physician Payments Sunshine Act. These payments do not necessarily indicate conflicts of interest. National median: $338 across 136 000 tracked providers.
Tiers — Low: under $500 · Moderate: $500-5 000 · High: $5 000-25 000 · Very High: $25 000+. Source: CMS Open Payments 2024, attributed to Tam K Nguyen's NPI.
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Background & Specialty
Education, training, and specialty classification from CMS NPPES and Medicare records.
Graduated medical school · 1994
Tulane University School of Medicine
Board certified · Apr 21, 2023
Self-reported via NPPES
32 years in practice
Senior practitioner
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Taxonomy: 207R00000X
Education & Training
Tulane University School of Medicine (Class of 1994)
Mailing address
19087 Chandon Ln, Huntington Beach, CA 92648-2145
Differs from practice location
Primary hospital affiliation: Acute Care Hospitals
CMS Certification Number: 360009
View hospital on Medicare Care CompareVirtual Internal Medicine Care With Tam K Nguyen
NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.
Schedule a virtual visit with Tam K Nguyen for blood pressure monitoring, cholesterol management, diabetes check-ins — no travel to Garden Grove required. The office sends a secure video link before your appointment. Most visits take 15–30 minutes. Medicare enrolled per CMS records.
Frequently Asked Questions
Common questions about Tam K Nguyen
NPI records show Dr. Nguyen as active with telehealth listed in Garden Grove, CA. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (714) 805-8260.
Sourced from CMS NPPES · OIG LEIE · CMS Medicare Part D · CMS Open Payments 2024 · CMS Physician Comparator. See Data Methodology.
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Contact Tam K Nguyen
Practice Location
12221 Brookhurst St Ste 100, Garden Grove, CA 92840-2848
Mailing Address
19087 Chandon Ln, Huntington Beach, CA 92648-2145
This is a provider directory. Contact the office directly to schedule appointments.
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