Medicare Enrolled
Dr. Justin Marasigan, DO
Internal Medicine · Oxnard, 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. Marasigan 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. Marasigan
Dr. Justin Marasigan is an internal medicine specialist in Oxnard, CA, with 18 years of NPI registration. Based on federal Medicare data, Dr. Marasigan performed 2,374 Medicare services across 1,217 unique beneficiaries.
Between the years covered by Open Payments, Dr. Marasigan received a total of $5,218 from 33 pharmaceutical and/or device companies across 240 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in internal 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. Marasigan 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 14% volume in CA
$5,218 industry payments
Medicare Practice Summary
Medicare Utilization ↗2,374
Medicare services
Top 14% in CA for internal medicine
1,217
Unique beneficiaries
$78
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~132 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 |
|---|---|---|---|
| Chronic care management, additional 20 min/month This service covers an extra 20 minutes of clinical staff time directed by a healthcare professional for managing two or more chronic conditions each calendar month. |
657 | $40 | $240 |
| Chronic care management, first 20 min/month This service covers the first 20 minutes of clinical staff time directed by a healthcare professional each calendar month to manage chronic conditions. |
378 | $51 | $300 |
| 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. |
230 | $102 | $600 |
| 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. |
131 | $95 | $854 |
| 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. |
122 | $75 | $604 |
| 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. |
122 | $118 | $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. |
107 | $209 | $1,103 |
| 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. |
85 | $73 | $440 |
| 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. |
84 | $45 | $280 |
| 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. |
83 | $65 | $358 |
| Remote patient monitoring management, 20 min/month Management based on results from remote vital sign monitoring for the first 20 minutes per calendar month. |
70 | $41 | $240 |
| 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. |
68 | $143 | $758 |
| Hospital follow-up visit, low complexity Follow-up hospital visit for an established patient with straightforward or low-level medical decision making. The visit requires at least 25 minutes of time spent on the day of service. |
63 | $41 | $222 |
| 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. |
38 | $69 | $540 |
| 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. |
37 | $98 | $514 |
| Endoscopy of digestive tract Imaging of the digestive tract performed from the inside using an endoscope. |
25 | $656 | $3,980 |
| 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. |
23 | $107 | $569 |
| 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. |
21 | $27 | $160 |
| Injection beneath large bowel lining via endoscope A flexible endoscope is used to inject medication or fluid beneath the lining of the large intestine. |
15 | $14 | $867 |
| Colonoscopy for colorectal cancer screening A colonoscopy performed to screen for colorectal cancer in individuals who are not at high risk for the disease. |
15 | $177 | $781 |
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 ↗$5,218
Total received (2018-2024)
Avg $745/year across 7 years
Top 15% in CA for internal medicine
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
33
Companies
240
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
$5,218 (100.0%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$2,064
2023
$1,160
2022
$991
2021
$471
2020
$232
2019
$56
2018
$244
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
ABBVIE INC.
$713
Janssen Biotech, Inc.
$220
Phathom Pharmaceuticals, Inc.
$199
PFIZER INC.
$166
Regeneron Healthcare Solutions, Inc.
$151
AIMMUNE THERAPEUTICS, INC.
$93
Lilly USA, LLC
$81
Ardelyx, Inc.
$79
Madrigal Pharmaceuticals
$75
Salix Pharmaceuticals, a division of Bausch Health US, LLC
$69
Takeda Pharmaceuticals U.S.A., Inc.
$68
GENZYME CORPORATION
$56
Exact Sciences Corporation
$23
Intercept Pharmaceuticals, Inc.
$21
IRONWOOD PHARMACEUTICALS, INC
$18
Teva Pharmaceuticals USA, Inc.
$17
QOL Medical, LLC
$14
Top 3 companies account for 54.9% of 2024 payments
All-time payments by company (2018-2024) ›
ABBVIE INC.
$1,809
Janssen Biotech, Inc.
$507
Gilead Sciences, Inc.
$366
AbbVie Inc.
$332
PFIZER INC.
$294
Takeda Pharmaceuticals U.S.A., Inc.
$212
Phathom Pharmaceuticals, Inc.
$199
Salix Pharmaceuticals, a division of Bausch Health US, LLC
$192
Regeneron Healthcare Solutions, Inc.
$185
GENZYME CORPORATION
$155
Ardelyx, Inc.
$131
Lilly USA, LLC
$120
AIMMUNE THERAPEUTICS, INC.
$93
Madrigal Pharmaceuticals
$75
Ferring Pharmaceuticals Inc.
$70
Nestle HealthCare Nutrition Inc.
$64
IRONWOOD PHARMACEUTICALS, INC
$42
Ironwood Pharmaceuticals, Inc
$37
Intercept Pharmaceuticals, Inc.
$37
Alfasigma USA, Inc.
$32
QOL Medical, LLC
$32
Daiichi Sankyo Inc.
$25
INTERCEPT PHARMACEUTICALS, INC.
$23
Ethicon US, LLC
$23
Exact Sciences Corporation
$23
NESTLE HEALTHCARE NUTRITION INC.
$23
Shionogi Inc
$22
RedHill Biopharma Inc.
$20
Merck Sharp & Dohme Corporation
$19
Teva Pharmaceuticals USA, Inc.
$17
Celgene Corporation
$16
Endogastric Solutions, Inc
$13
Braintree Laboratories, Inc.
$13
Top 3 companies account for 51.4% of all-time payments
Associated products mentioned in payments ›
CIMZIA · CREON · Cologuard Collection Kit · DIFICID · DUPIXENT · ENTYVIO · ESOPHYX · Epclusa · HUMIRA · IBSRELA · INJECTAFER · LINZESS · Linzess · MAVYRET · MOTEGRITY · MOTOFEN · MOVIPREP · Mulpleta · OCALIVA · OMVOH · REBYOTA · RELISTOR ORAL · REMICADE · RESMETIROM · RINVOQ · SKYRIZI · STELARA · SUCRAID · TRULANCE · Talicia · Truxima · VIBERZI · VOQUEZNA · XELJANZ · XIFAXAN · ZENPEP · ZEPOSIA
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 (100%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
Geographic Context
Internal medicine physicians within 10 mi
305
Per 100K population
36.4
County median income
$107,327
Nearest hospital
ST JOHNS REGIONAL MEDICAL CENTER
0.0 mi
0.0 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. Marasigan is a clinical cardiology specialist, with above-average Medicare volume (top 14% in CA), with low-engagement industry engagement in the top 15% of CA peers, 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. Marasigan experienced with chronic care management, additional 20 min/month?
Based on Medicare claims data, Dr. Marasigan performed 657 chronic care management, additional 20 min/month 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. Marasigan receive payments from pharmaceutical companies?
Yes. Dr. Marasigan received a total of $5,218 from 33 companies across 240 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. Marasigan's costs compare to other internal medicine physicians in Oxnard?
Dr. Marasigan's average Medicare payment per service is $78. 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. Marasigan) 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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