Maria Pilar C. Ivanov, MD
Hematology & Oncology Physician · San Jose, CA
Maria Pilar C. Ivanov, MD is a hematology & oncology physician with a practice address in San Jose, California, and NPI 1700930468, issued on Jan 22, 2007. Check the license (California A51332, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Maria Pilar C. Ivanov
- Credential
- MD
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- A51332 CA
Self-reported in NPPES; status is on the state search - Practice location
- 260 International Cir, San Jose, CA 95119
- Phone
- (408) 972-7000
- Enumerated
- Jan 22, 2007
- Record last updated
- Jan 10, 2022
- Medicaid ID
- 00A513320 CA
- Medicare enrollment
- Enrolled (PECOS I20110126000445); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 1,583 in California → Look up another NPI →
Also registered at 260 International Cir
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Thomas Alloggiamento, MDCardiovascular Disease Physician1881770386
Verify Maria Pilar C. Ivanov in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A51332Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
72% more Medicare Part D claims than the average hematology & oncology physician in 2024
1,509 Medicare Part D claims for 342 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. 34 claims were for opioids.
Most prescribed
- Anastrozole437 claims
- Letrozole159 claims
- Dexamethasone79 claims
- Exemestane79 claims
- Ibrance64 claims
- Ondansetron Hcl58 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.
Bills Medicare through one group practice
- Permanente Medical Group IncSanta Clara, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Maria Pilar C. Ivanov among 1,583 hematology & oncology physician records in California
Maria Pilar C. Ivanov, MD is one of 1,583 hematology & oncology physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 46% of them.
- NPI issued2007 · 46% of these records are older, 40% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated1985 · median 2003 among the 1,124 with a school on file
- Record last updated2022 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in California
There are 1,583 hematology & oncology physician records in California.
All 1,583 in California → Every provider in San Jose → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Alaa AltahanSan Jose, CA 951191952757684
- Jankikeerthika Dharmarpandi, MDSan Jose, CA 951191861055782
- Eric Imoto, D.O.San Jose, CA 951191396056438
- Myron Kwong, MDSan Jose, CA 951191992881403
- Michael Lee, MDSan Jose, CA 951191629631296
- Leonid Yavorkovsky, MDSan Jose, CA 951191689750119
- Tin Hla, M.D.San Jose, CA 951161326098179
- Charlene Lee, MDSan Jose, CA 951161831488337
Common questions
What is Maria Pilar C. Ivanov, MD's NPI number?
Maria Pilar C. Ivanov, MD's National Provider Identifier (NPI) is 1700930468, issued on Jan 22, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Maria Pilar C. Ivanov, MD located?
The NPPES record lists a practice address at 260 International Cir, San Jose, CA, 95119. Phone: (408) 972-7000. Providers update this record themselves, so call before visiting.
How can I verify Maria Pilar C. Ivanov, MD's license?
NPPES lists California license number A51332, 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 Maria Pilar C. Ivanov, MD prescribe under Medicare Part D?
In 2024, Maria Pilar C. Ivanov, MD had 1,509 Medicare Part D claims for 342 beneficiaries; the average among hematology & oncology physician prescribers was 877. 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.