Marin Xavier, MD
NPI 1437211372 · Medical Oncology Physician · San Diego, CA
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marin Xavier, MD is a Medical Oncology Physician provider in San Diego, CA (NPI 1437211372).
Provider details
- NPI number
- 1437211372
- Entity type
- Individual
- Primary specialty
- Medical Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A84606 (CA)
Specialties & taxonomies
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
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
2,997 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) |
|---|---|---|
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 943 | $17 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 942 | $137 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 430 | $8 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 413 | $191 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 86 | $120 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 38 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ruxolitinib Phosphatebrand: Jakafi | 91 | 11 |
| Acyclovir | 70 | 22 |
| Zanubrutinibbrand: Brukinsa | 52 | — |
| Venetoclaxbrand: Venclexta | 48 | — |
| Momelotinib Dihydrochloridebrand: Ojjaara | 47 | — |
| Olaparibbrand: Lynparza | 47 | — |
| Hydroxyurea | 37 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$111,243 across 237 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
Registry dates
- Enumerated
- 2006-12-15
- Last updated
- 2020-01-02
- Certified
- 2020-01-02
Frequently asked questions
- What is Marin Xavier's NPI number?
- Marin Xavier's National Provider Identifier (NPI) is 1437211372, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marin Xavier's specialty?
- Marin Xavier is listed in the NPPES registry with a primary specialty of Medical Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Marin Xavier located?
- Marin Xavier's practice location on file with NPPES is 501 Washington St Ste 508, San Diego, CA 92103-2238.
- What is Marin Xavier's phone number?
- The practice phone number listed in the NPPES registry for Marin Xavier is (619) 849-4469.
- Does Marin Xavier accept Medicare?
- Marin Xavier is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marin Xavier's NPI active?
- Yes — Marin Xavier's NPI (1437211372) is active in the NPPES registry as of the last update on 2020-01-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.