Oscar A. Matthews, M.D.
Cardiovascular Disease Physician · Vista, CA
Oscar A. Matthews, M.D. is a cardiovascular disease physician with a practice address in Vista, California, and NPI 1053300673, issued on Oct 17, 2005. Check the license (California A24880, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Oscar A. Matthews
- Credential
- M.D.
- Primary taxonomy
- Cardiovascular Disease Physician 207RC0000X
- License number
- A24880 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2095 W Vista Way, Vista, CA 92083
- Phone
- (760) 941-4005
- Enumerated
- Oct 17, 2005
- Record last updated
- Nov 8, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (760) 941-4090
- Entity
- Type 1 · individual
8 nearest cardiovascular disease physician records → All 2,574 in California → Look up another NPI →
Also registered at 2095 W Vista Way
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Oscar A. Matthews in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A24880Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average cardiovascular disease physician in 2024
22 Medicare Part D claims, against an average of 3,078 among the 20,728 providers of this specialty who prescribed in Part D.
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.
Oscar A. Matthews among 2,574 cardiovascular disease physician records in California
Oscar A. Matthews, M.D. is one of 2,574 cardiovascular disease 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 90% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileNo · 68% of these records are
- Record last updated2010 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Cardiovascular Disease Physician providers in California
There are 2,574 cardiovascular disease physician records in California.
All 2,574 in California → Every provider in Vista → Cardiovascular Disease Physician nationwide →
The 8 cardiovascular disease physician records with the nearest ZIP codes
- George ClementsVista, CA 920831780078600
- Edward Evans, M.D.Vista, CA 920831437293446
- David Spiegel, M.D.Vista, CA 920831982667135
- Hanh Bui, M.D.Vista, CA 920811275519175
- Monica Parks, MDVista, CA 920811740634971
- Juan Alvergue, M.D.San Marcos, CA 920781346351517
- Kevin Ting, MDLa Jolla, CA 920931114372471
- David Samuels, M.D.Rancho Santa Fe, CA 920671487653622
Common questions
What is Oscar A. Matthews, M.D.'s NPI number?
Oscar A. Matthews, M.D.'s National Provider Identifier (NPI) is 1053300673, issued on Oct 17, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Oscar A. Matthews, M.D. located?
The NPPES record lists a practice address at 2095 W Vista Way, Vista, CA, 92083. Phone: (760) 941-4005. Providers update this record themselves, so call before visiting.
How can I verify Oscar A. Matthews, M.D.'s license?
NPPES lists California license number A24880, 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 Oscar A. Matthews, M.D. prescribe under Medicare Part D?
In 2024, Oscar A. Matthews, M.D. had 22 Medicare Part D claims; the average among cardiovascular disease physician prescribers was 3,078. 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.