Justin Marasigan, DO
NPI 1174714067 · Gastroenterology Physician · Oxnard, CA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Justin Marasigan, DO is a Gastroenterology Physician provider in Oxnard, CA (NPI 1174714067).
Provider details
- NPI number
- 1174714067
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- Yes
- License
- 5101017474 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
18 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
2,384 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Chronic Care Management Services for Two Or More Chronic Conditions, Additional 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99439 | 764 | $51 |
| Chronic Care Management Services, First 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99490 | 416 | $66 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 251 | $137 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 136 | $93 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 120 | $175 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 15 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Omeprazole | 324 | 122 |
| Pantoprazole Sodium | 250 | 67 |
| Esomeprazole Magnesium | 40 | — |
| Linaclotidebrand: Linzess | 38 | — |
| Lipase/Protease/Amylasebrand: Creon | 33 | — |
| Sucralfate | 33 | — |
| Lubiprostone | 23 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,064 across 95 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 1006 North H StreetAberdeen, WA 98520Phone: (360) 537-6496Fax: (360) 537-6322
Registry dates
- Enumerated
- 2007-08-06
- Last updated
- 2021-03-18
- Certified
- 2021-02-24
Frequently asked questions
- What is Justin Marasigan's NPI number?
- Justin Marasigan's National Provider Identifier (NPI) is 1174714067, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Justin Marasigan's specialty?
- Justin Marasigan is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Justin Marasigan located?
- Justin Marasigan's practice location on file with NPPES is 2241 Wankel Way Ste a, Oxnard, CA 93030-0191.
- What is Justin Marasigan's phone number?
- The practice phone number listed in the NPPES registry for Justin Marasigan is (805) 983-0521.
- Does Justin Marasigan accept Medicare?
- Justin Marasigan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Justin Marasigan's NPI active?
- Yes — Justin Marasigan's NPI (1174714067) is active in the NPPES registry as of the last update on 2021-03-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.