Marin F. Xavier, MD
Medical Oncology Physician · San Diego, CA
Marin F. Xavier, MD is a medical oncology physician with a practice address in San Diego, California, and NPI 1437211372, issued on Dec 15, 2006. Check the license (California A84606, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Marin F. Xavier
- Credential
- MD
- Primary taxonomy
- Medical Oncology Physician 207RX0202X
- License number
- A84606 CA
Self-reported in NPPES; status is on the state search - Practice location
- 501 Washington St Ste 508, San Diego, CA 92103
- Phone
- (619) 849-4469
- Enumerated
- Dec 15, 2006
- Record last updated
- Jan 2, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (619) 849-1547
- Medicare enrollment
- Enrolled (PECOS I20100201000342); accepts Medicare assignment
- Medical or professional school
- Perelman School Of Med At The University Of Pennsylvania, 2002
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest medical oncology physician records → All 447 in California → Look up another NPI →
Also registered at 501 Washington St Ste 508
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kathryn Bollin, M.D.Hematology & Oncology Physician1801020334
- Houman Dahi, MDPulmonary Disease Physician1598732604
- Dia Jones, FNPFamily Nurse Practitioner1841700093
- Ann Kuo, M.D.Internal Medicine Physician1790030005
- Joseph Resnikoff, M.D.Pulmonary Disease Physician1730193996
- Aditya Sarvaria, MDHematology & Oncology Physician1407116627
Verify Marin F. Xavier in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A84606Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
69% more Medicare Part D claims than the average medical oncology physician in 2024
1,190 Medicare Part D claims for 196 beneficiaries, against an average of 703 among the 4,230 providers of this specialty who prescribed in Part D. Brand-name drugs were 45% of claims. 26 claims were for opioids.
Most prescribed
- Jakafi91 claims
- Acyclovir70 claims
- Brukinsa52 claims
- Venclexta48 claims
- Lynparza47 claims
- Ojjaara47 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $111,242.62
237 payments; by number, the most common kind was food and beverage; the largest payer was BeiGene USA, Inc. The 3,343 providers of this specialty with any payment received $11,773.47 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Scripps HealthSan Diego, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marin F. Xavier among 447 medical oncology physician records in California
Marin F. Xavier, MD is one of 447 medical oncology physician records with a practice address in California. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 6% of them.
- NPI issued2006 · 6% of these records are older, 55% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated2002 · median 2004 among the 312 with a school on file
- Record last updated2020 · 41% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RX0202X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Medical Oncology Physician providers in California
There are 447 medical oncology physician records in California.
All 447 in California → Every provider in San Diego → Medical Oncology Physician nationwide →
The 8 medical oncology physician records with the nearest ZIP codes
- Kaitlyn Dykes, MDSan Diego, CA 921031861952632
- Bassel El-Rayes, MDSan Diego, CA 921031437196433
- Wenji Guo, MDSan Diego, CA 921031538604392
- Siddharth Iyengar, MDSan Diego, CA 921031003376187
- Tanim Jain, MDSan Diego, CA 921031528695145
- Olivia Main, MDSan Diego, CA 921031225664352
- Kelly McCann, M.D., PH.D.San Diego, CA 921031942599915
- Christina SniderSan Diego, CA 921031356960751
Common questions
What is Marin F. Xavier, MD's NPI number?
Marin F. Xavier, MD's National Provider Identifier (NPI) is 1437211372, issued on Dec 15, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Marin F. Xavier, MD located?
The NPPES record lists a practice address at 501 Washington St Ste 508, San Diego, CA, 92103. Phone: (619) 849-4469. Providers update this record themselves, so call before visiting.
How can I verify Marin F. Xavier, MD's license?
NPPES lists California license number A84606, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Marin F. Xavier, MD prescribe under Medicare Part D?
In 2024, Marin F. Xavier, MD had 1,190 Medicare Part D claims for 196 beneficiaries; the average among medical oncology physician prescribers was 703. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.