Corey M. Schwartz, MD
Hematology & Oncology Physician · Vallejo, CA
Corey M. Schwartz, MD is a hematology & oncology physician with a practice address in Vallejo, California, and NPI 1801974647, issued on Nov 1, 2006. Check the license (California A83676, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Corey M. Schwartz
- Credential
- MD
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- A83676 CA
Self-reported in NPPES; status is on the state search - Practice location
- 975 Sereno Dr, Vallejo, CA 94589
- Phone
- (707) 651-1000
- Enumerated
- Nov 1, 2006
- Record last updated
- Dec 9, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid ID
- 00A836760 CA
- Medicare enrollment
- Enrolled (PECOS I20101111000277); accepts Medicare assignment
- Medical or professional school
- Georgia College Of Eclectric Medicine And Surgery, 1998
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 1,583 in California → Look up another NPI →
Also registered at 975 Sereno Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Joel Aandahl, NPAdult Health Nurse Practitioner1891423653
- Noman Absar, MDCritical Care Medicine (Internal Medicine) Physician1205908951
- Anthony Acquaviva, MDUrology Physician1457439283
- Jhonnard James Acuna, CRNACertified Registered Nurse Anesthetist1205997327
- Omid AfshariPharmacist1184165391
- Eesha AftabStudent in an Organized Health Care Education/Training Program1770421687
Verify Corey M. Schwartz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A83676Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
28% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
631 Medicare Part D claims for 165 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 26% of claims. 34 claims were for opioids.
Most prescribed
- Abiraterone Acetate61 claims
- Prednisone47 claims
- Imatinib Mesylate42 claims
- Brukinsa37 claims
- Dexamethasone29 claims
- Xtandi27 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 IncVallejo, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Corey M. Schwartz among 1,583 hematology & oncology physician records in California
Corey M. Schwartz, 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 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 54% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated1998 · median 2003 among the 1,124 with a school on file
- Record last updated2021 · 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 Vallejo → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Bruce Clark, MDVallejo, CA 945891083793871
- Louis Fehrenbacher, MDVallejo, CA 945891942388764
- Aradhana Ghosh, MDVallejo, CA 945891821176322
- Tatjana Kolevska, MDVallejo, CA 945891760554596
- Daniel Lee, M.D.Vallejo, CA 945891780949131
- Chainarong Limvarapuss, MDVallejo, CA 945891053341784
- Rima Nakrani, MDVallejo, CA 945891710547633
- Jennifer Suga, M.D.Vallejo, CA 945891972710119
Common questions
What is Corey M. Schwartz, MD's NPI number?
Corey M. Schwartz, MD's National Provider Identifier (NPI) is 1801974647, issued on Nov 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Corey M. Schwartz, MD located?
The NPPES record lists a practice address at 975 Sereno Dr, Vallejo, CA, 94589. Phone: (707) 651-1000. Providers update this record themselves, so call before visiting.
How can I verify Corey M. Schwartz, MD's license?
NPPES lists California license number A83676, 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 Corey M. Schwartz, MD prescribe under Medicare Part D?
In 2024, Corey M. Schwartz, MD had 631 Medicare Part D claims for 165 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.