Medicare Enrolled
Dr. Ken Nguyen, M.D.
Gastroenterology · Temple City, CA
Practice pattern: Clinical Cardiology
— Primarily office-based clinical cardiology
Speaking/Promotional
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 →
Are you Dr. Nguyen?
Request a correction or review of any data shown here. Provider portal →
What this data tells you about Dr. Nguyen
Dr. Ken Nguyen is a gastroenterology specialist in Temple City, CA, with 13 years of NPI registration. Based on federal Medicare data, Dr. Nguyen performed 1,253 Medicare services across 1,084 unique beneficiaries.
Between the years covered by Open Payments, Dr. Nguyen received a total of $162,278 from 43 pharmaceutical and/or device companies across 778 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in gastroenterology. The majority of payments are for speaking programs and promotional activities, reflecting participation in industry-sponsored events. 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.
✓ 13 years in practice
▲ Top 24% volume in CA
$162,278 industry payments
Medicare Practice Summary
Medicare Utilization ↗1,253
Medicare services
Top 24% in CA for gastroenterology
1,084
Unique beneficiaries
$109
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~96 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. |
277 | $97 | $599 |
| 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. |
170 | $68 | $440 |
| Upper GI endoscopy with biopsy A procedure to collect tissue samples from the esophagus, stomach, or upper small intestine using a flexible tube with a camera. The samples are examined to check for abnormalities. |
126 | $72 | $608 |
| 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. |
110 | $116 | $780 |
| Colon polyp removal with endoscopic snare This procedure removes polyps or growths from the large bowel using a flexible tube with a camera and a wire loop tool. The snare is used to cut off the growths during the examination. |
75 | $201 | $1,110 |
| Colonoscopy with biopsy A procedure to collect tissue samples from the large intestine using a flexible tube with a camera. The samples are examined to check for abnormalities or disease. |
70 | $94 | $871 |
| Office visit, established patient, complex (40-54 min) An office or outpatient visit for an existing patient lasting between 40 and 54 minutes. This level of service is determined by the total time spent on the date of the encounter. |
63 | $134 | $840 |
| New patient office visit (30-44 min) An initial office visit for a new patient lasting between 30 and 44 minutes. This code is used when the total time spent on the date of the encounter falls within this range. |
53 | $68 | $540 |
| Initial hospital admission, high complexity Initial hospital inpatient or observation care for a new patient involving high-level medical decision making, with at least 75 minutes total time on the date of the encounter. |
48 | $143 | $775 |
| External hemorrhoid removal by rubber banding A procedure to remove external hemorrhoids using rubber bands to cut off blood supply. The affected tissue is tied off and eventually falls off. |
47 | $237 | $1,420 |
| Complete ultrasound of abdomen A diagnostic imaging test that uses sound waves to create detailed pictures of the organs and structures within the abdomen. |
45 | $70 | $450 |
| New patient office visit, complex (60-74 min) | 31 | $171 | $1,020 |
| Initial hospital admission, moderate complexity Initial hospital inpatient or observation care for a new patient involving moderate-level medical decision making, with at least 55 minutes total time on the date of the encounter. |
26 | $105 | $547 |
| Colonoscopy A diagnostic exam of the large bowel using a flexible endoscope to visualize the interior of the colon. |
23 | $135 | $811 |
| Liver stiffness measurement A non-invasive test that uses ultrasound or similar technology to measure the stiffness of liver tissue. This measurement helps assess the degree of liver fibrosis or scarring. |
22 | $26 | $160 |
| Colonoscopy for colorectal cancer screening A colonoscopy performed to screen for colorectal cancer in individuals who are not at high risk for the disease. |
21 | $187 | $811 |
| Hospital follow-up visit, high complexity Subsequent hospital inpatient or observation care for an existing patient involving high-level medical decision making, with at least 50 minutes total time on the date of the encounter. |
17 | $100 | $527 |
| Colonoscopy for colorectal cancer screening, high risk A colonoscopy performed to screen for colorectal cancer in individuals identified as being at high risk for the disease. |
15 | $182 | $807 |
| Hospital follow-up visit, moderate complexity Follow-up hospital visit for an existing patient involving moderate medical decision making. The visit requires at least 35 minutes of time spent on the date of service. |
14 | $66 | $356 |
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 ↗$162,278
Total received (2018-2024)
Avg $23,183/year across 7 years
Top 2% in CA for gastroenterology
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
43
Companies
778
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.
Speaking / Promotional
Speaker programs, honoraria, and industry-sponsored educational events
$141,628 (87.3%)
Meals & Travel
Food, beverages, travel, and lodging — typically low-value
$12,282 (7.6%)
Consulting
Expert advisory fees, typically reflecting recognized clinical expertise
$8,368 (5.2%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$33,269
2023
$15,077
2022
$16,218
2021
$41,904
2020
$19,510
2019
$34,473
2018
$1,827
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
ABBVIE INC.
$13,589
IRONWOOD PHARMACEUTICALS, INC
$8,972
Phathom Pharmaceuticals, Inc.
$8,666
Madrigal Pharmaceuticals
$258
Boston Scientific Corporation
$218
Takeda Pharmaceuticals U.S.A., Inc.
$181
E.R. Squibb & Sons, L.L.C.
$163
Janssen Biotech, Inc.
$163
QOL Medical, LLC
$163
Salix Pharmaceuticals, a division of Bausch Health US, LLC
$149
Gilead Sciences, Inc.
$141
Celgene Corporation
$134
Ardelyx, Inc.
$113
GENZYME CORPORATION
$106
Merck Sharp & Dohme LLC
$84
Laborie Medical Technologies Corp.
$59
Intercept Pharmaceuticals, Inc.
$58
RedHill Biopharma Inc.
$29
ALBIREO PHARMA, INC.
$25
Top 3 companies account for 93.9% of 2024 payments
All-time payments by company (2018-2024) ›
AbbVie Inc.
$54,600
AbbVie, Inc.
$30,062
ABBVIE INC.
$25,378
IRONWOOD PHARMACEUTICALS, INC
$9,114
Phathom Pharmaceuticals, Inc.
$8,693
RedHill Biopharma Inc.
$8,104
Ironwood Pharmaceuticals, Inc
$6,872
E.R. Squibb & Sons, L.L.C.
$5,870
Gilead Sciences, Inc.
$4,458
Celgene Corporation
$1,398
Novartis Pharmaceuticals Corporation
$1,333
Salix Pharmaceuticals, a division of Bausch Health US, LLC
$927
Janssen Biotech, Inc.
$632
Amarin Pharma Inc.
$556
Takeda Pharmaceuticals U.S.A., Inc.
$496
Ardelyx, Inc.
$482
Merck Sharp & Dohme Corporation
$311
QOL Medical, LLC
$299
INTERCEPT PHARMACEUTICALS, INC.
$276
Madrigal Pharmaceuticals
$258
Intercept Pharmaceuticals, Inc.
$245
Boston Scientific Corporation
$242
Merck Sharp & Dohme LLC
$152
GENZYME CORPORATION
$147
Aries Pharmaceuticals, Inc.
$142
Alexion Pharmaceuticals, Inc.
$125
Janssen Scientific Affairs, LLC
$125
AstraZeneca Pharmaceuticals LP
$121
Regeneron Healthcare Solutions, Inc.
$115
Amgen Inc.
$112
VistaPharm, Inc.
$111
Covidien LP
$98
TETRAPHASE PHARMACEUTICALS, INC.
$85
Radius Health, Inc.
$69
Laborie Medical Technologies Corp.
$59
Mannkind Corporation
$42
Allergan Inc.
$36
MannKind Corporation
$26
ALBIREO PHARMA, INC.
$25
Nestle HealthCare Nutrition Inc.
$25
ERBE USA Inc
$21
VIVUS LLC
$20
W. L. Gore & Associates, Inc.
$17
Top 3 companies account for 67.8% of all-time payments
Associated products mentioned in payments ›
AFREZZA · Andexxa · CARDIOFORM Septal Occluder · CREON · Creon · DIFICID · DUPIXENT · ELEVIEW · EMBLEM MRI S-ICD · ENTRESTO · ENTYVIO · Entyvio · Epclusa · Erbe VIO3 · FARXIGA · GENERAL BILIARY DEVICES · HUMIRA · Humira · IBSRELA · IQIRVO · LEQVIO · LINZESS · Linzess · MAVYRET · MOTEGRITY · Mavyret · OCALIVA · PANCREAZE · PillCam · REMICADE · RESMETIROM · RESONATE EL ICD VR · REZDIFFRA · RINVOQ · Repatha · SKYRIZI · STELARA · SUCRAID · Sucraid · TREMFYA · TRULANCE · Talicia · Thyquidity · Tymlos · VIBERZI · VOQUEZNA · Vascepa · Vemlidy · XIFAXAN · Xerava · ZENPEP · ZEPOSIA · ZERBAXA · ZINPLAVA · alpHaONE
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 →
The majority of payments (87%) are for speaking programs and promotional activities, which reflect participation in industry-sponsored educational or marketing events. This is common in gastroenterology and does not inherently indicate bias, but patients may wish to be aware. Total industry engagement is in the top 2% for gastroenterology in CA.
Geographic Context
Gastroenterologists within 10 mi
498
Per 100K population
5.1
County median income
$87,760
Nearest hospital
USC ARCADIA HOSPITAL
1.9 mi
1.9 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 24% in CA), with speaking/promotional industry engagement in the top 2% of CA peers.
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 277 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 $162,278 from 43 companies across 778 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 gastroenterologists in Temple City?
Dr. Nguyen's average Medicare payment per service is $109. 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 →
Explore related providers
Specialty guide
Understanding Gastroenterology
Common procedures, typical costs, and what industry payments mean in gastroenterology.
Same specialty & city
Gastroenterologists in Temple City
Browse gastroenterologists in Temple City ranked by procedure volume and transparency data.
Highest volume
Top Gastroenterologists in CA
Gastroenterologists ranked by total Medicare services performed statewide.
Industry payments
Pharma Payments to Gastroenterologists in CA
Which CA gastroenterologists receive the most from drug and device companies.
By company
AbbVie Inc. Payments to Doctors
See all physicians who received payments from AbbVie Inc.
By company
AbbVie, Inc. Payments to Doctors
See all physicians who received payments from AbbVie, Inc.
By company
ABBVIE INC. Payments to Doctors
See all physicians who received payments from ABBVIE INC.
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.
Provider corrections: Provider portal · Privacy questions: Privacy Policy · Terms: Terms of Use · Methodology: Methodology