Justin M Marasigan, DO
Gastroenterology Internal Medicine
Justin M Marasigan is a Gastroenterology Internal Medicine specialist based in Oxnard, CA with over 19 years of clinical experience. Medicare-enrolled per CMS records and offers virtual telehealth visits.
Justin M Marasigan, DO has practiced internal medicine for 19+ years, working in independent practice. He has been in practice for 19+ years. He regularly sees Medicare patients with hypertension, high cholesterol, and arthritis (per CMS claims data). CMS MIPS quality score: 100/100 (2023).
At a glance
- Uses generic medications more than 49% of reporting doctors in California
- Federal MIPS score higher than 93% of MIPS-scored doctors in California
- Virtual visits available — no app or travel required
Older · 1892dNPPES updated 2021-03-18 · verify NPI on CMS · Verify license at Medical Board of California
Contact & Location
Practice Location
2241 Wankel Way Ste a, Oxnard, CA 93030-0191
How Does This Doctor Compare?
Based on Medicare data, this doctor scores better than 93% of doctors in California on federal quality measures, favors affordable generic drugs over brand-name ones.
MIPS Score
2023100/100
California avg: 78.6 · US avg: 83.6
✓ Higher than most doctors nationally(+16.4 pts)
Top 7% of MIPS-scored doctors in CaliforniaHow the government rates this doctor's Medicare care quality. Scores above 75 are considered good.
Generic Rx
↑ Higher = better87.7%
California avg: 83.3 · US avg: 82.8
✓ Higher than most doctors nationally(+4.9 pts)
Typical range among reporting doctors in CaliforniaHow often this doctor prescribes affordable generic drugs instead of expensive brand-name ones.
Medicare Patients
659
Unique beneficiaries
High volumePrescription Recipients
217
Patients prescribed
Prescriptions Written
891
Total claims
Total Medicare drug cost: $232k
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 Arthritis.
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
Joint inflammation causing pain, swelling, and stiffness
US avg: 49.3%↓ Fewer patients than average (-2%) — less common here
A condition where the body cannot properly regulate blood sugar levels
US avg: 34.5%↑ More patients than average (+7%) — a focus area for this doctor
Reduced blood flow to the heart muscle, commonly known as coronary artery disease
US avg: 31.7%↑ More patients than average (+4%) — 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 (+2%) — a focus area for this doctor
Conditions affecting emotional state, including depression and bipolar disorder
A mood disorder causing persistent sadness and loss of interest in activities
US avg: 31.8%↓ Fewer patients than average (-5%) — less common here
Percentage of this provider's Medicare patients diagnosed with each condition. Source: CMS Utilization Data.
$2.1k received from industry
95 transactions reported in 2024 ·Moderate 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 Justin M Marasigan's NPI.
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Background & Specialty
Education, training, and specialty classification from CMS NPPES and Medicare records.
Board certified · Feb 23, 2021
Self-reported via NPPES
19 years in practice
Experienced
Gastroenterologists diagnose and treat digestive system disorders including GERD, irritable bowel syndrome (IBS), inflammatory bowel disease (Crohn's, ulcerative colitis), liver disease, pancreatitis, and colon polyps. They perform endoscopies and colonoscopies.
Taxonomy: 207RG0100X
Mailing address
225 W Broadway Ste 350, Glendale, CA 91204-1303
Differs from practice location
Primary hospital affiliation: Acute Care Hospitals
CMS Certification Number: 190099
View hospital on Medicare Care CompareVirtual Internal Medicine Care With Justin M Marasigan
NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.
Schedule a virtual visit with Justin M Marasigan for blood pressure monitoring, cholesterol management, arthritis follow-ups — no travel to Oxnard 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 Justin M Marasigan
Dr. Marasigan is listed as active in the NPI registry with telehealth listed in Oxnard, CA. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (805) 983-0521.
Sourced from CMS NPPES · OIG LEIE · CMS QPP 2023 · CMS Medicare Part D · CMS Open Payments 2024 · CMS Physician Comparator. See Data Methodology.
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Contact Justin M Marasigan
Practice Location
2241 Wankel Way Ste a, Oxnard, CA 93030-0191
Mailing Address
225 W Broadway Ste 350, Glendale, CA 91204-1303
This is a provider directory. Contact the office directly to schedule appointments.
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