David John Oblon, MD
Hematology & Oncology Physician · Oceanside, CA
David John Oblon, MD is a hematology & oncology physician with a practice address in Oceanside, California, and NPI 1215072434, issued on Feb 21, 2007. Check the license (California G85016, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- David John Oblon
- Credential
- MD
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- G85016 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3925 Waring RD, Oceanside, CA 92056
- Phone
- (760) 758-5770
- Enumerated
- Feb 21, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (760) 758-0566
- Medicaid ID
- 00G850160 CA
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 1,583 in California → Look up another NPI →
Verify David John Oblon in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G85016Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
32 Medicare Part D claims, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Amiodarone Hcl12 claims
- Potassium Chloride12 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.
David John Oblon among 1,583 hematology & oncology physician records in California
David John Oblon, 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 fileNo · 71% of these records are
- Record last updated2007 · 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 Oceanside → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Warren Paroly, MDOceanside, CA 920561306981527
- Catherine Quinn, M.D.Oceanside, CA 920561427403641
- Nayyar Siddique, MDOceanside, CA 920561497890610
- Himani Singh, MDOceanside, CA 920561558546192
- Christine White, M.D.Rancho Santa Fe, CA 920671265535728
- Philip Marjon, M.D.San Marcos, CA 920691912234121
- Oyewale Abidoye, M.D.La Jolla, CA 920371790841815
- Sonia Ali, M.D.La Jolla, CA 920371730451089
Common questions
What is David John Oblon, MD's NPI number?
David John Oblon, MD's National Provider Identifier (NPI) is 1215072434, issued on Feb 21, 2007. An NPI identifies a provider in billing; it is not a license.
Where is David John Oblon, MD located?
The NPPES record lists a practice address at 3925 Waring RD, Oceanside, CA, 92056. Phone: (760) 758-5770. Providers update this record themselves, so call before visiting.
How can I verify David John Oblon, MD's license?
NPPES lists California license number G85016, 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 David John Oblon, MD prescribe under Medicare Part D?
In 2024, David John Oblon, MD had 32 Medicare Part D claims; 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.