Arrhythmias, CardiacButtocksInjections, Intramuscular
Dr. Oscar A. Matthews, MD
NPI1053300673
- Medicare services, 2022
- 315
- Part D claims, 2024
- 22
- Publications
- 2
- Industry payments
- $15,777
- Affiliated sites
- 4
- Practice address
- 2095 W Vista Way Ste 107 Suite 107, Vista, CA 92083-6028
- Practice phone
- Call (760) 941-4005
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Cambrian Cardiology
Physician office · Vista, California
Find Dr. Matthews' professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Oscar A. Matthews is a cardiologist in Vista, California
Dr. Matthews practices at Cambrian Cardiology in Vista, California.
Dr. Matthews' NPI, 1053300673, was assigned on October 17, 2005. Dr. Matthews graduated from Universidad Nacional de Cordoba in 1964. Dr. Matthews holds California license A24880.
NPI and contact details
- NPI
- 1053300673NPI Registry (opens in a new tab)
- NPI enumeration date
- October 17, 2005
- NPI status
- Active
- Practice phone
- (760) 941-4005
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 88
- Medical school graduation
- 1964
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Oscar A. Matthews practices at Cambrian Cardiology in Vista, California
Dr. Matthews' primary practice is Cambrian Cardiology, at 2095 W Vista Way Ste 107 Suite 107, Vista, CA 92083-6028. The practice phone is (760) 941-4005.
- Cambrian Cardiology2095 W Vista Way Ste 107 Suite 107, Vista, CA 92083-6028Phone(760) 941-4005
Source: Dmand AI Affiliation Data
Dr. Oscar A. Matthews is affiliated with 4 sites of care
Dr. Matthews' primary practice is Cambrian Cardiology in Vista, California. Dmand AI also links Dr. Matthews to 3 physician offices, each named with a free account.
Cambrian CardiologyPrimary
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Oscar A. Matthews' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Matthews practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Cambrian Cardiology | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Oscar A. Matthews is one of 2,375 cardiologists in California
Cardiovascular disease is Dr. Matthews' primary specialty in the NPI Registry, under taxonomy code 207RC0000X. Dmand AI has Dr. Matthews' licenses on file in 2 states: California and Texas.
Specialties and state licenses
- Cardiovascular disease, CaliforniaPrimary
- Texas license
Cardiologists near Dr. Matthews
Counts of cardiologists with a Dmand AI profile, by place and practice. Each opens the list.
2,375cardiologists in California
4cardiologists in Vista
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Oscar A. Matthews billed Medicare for 315 services in 2022
CMS data shows 315 Medicare services from Dr. Matthews across 5 procedure codes in 2022. Medicare paid $24,385 for them.
Medicare services, 2022315
Paid by Medicare$24,385
Procedure codes5
Dr. Matthews' Medicare services by type, 2021 to 2022
- 2021
- 2022
- Office and hospital visits
- 2021: 2452022: 17329%
- Tests and treatments
- 2021: 1632022: 14213%
Where Dr. Matthews' Medicare services took place, 2022
- In an office29594%
- In a facility206%
Dr. Matthews compared with the California median for cardiologists, 2022
- Dr. Matthews
- California median
- Medicare services
- 315vs 1,56080% below
- Part D claims
- 13vs 1,41099% below
Medians across 2,237 cardiologists in California with Dmand AI profiles that report each measure.
Dr. Matthews' most billed Medicare procedure codes, 2022
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Oscar A. Matthews' patients have a median age of 68
Across all payers, Dmand AI patient panel data puts Dr. Matthews' median patient age at 68, with 35% women.
Dr. Matthews' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 68
Patient panel by sex, all payers
- Women35%
- Men65%
Source: Dmand AI Patient Panel Data
Dr. Oscar A. Matthews wrote 22 Medicare Part D claims in 2024
In 2024, Dr. Matthews wrote 22 Medicare Part D claims. 91% of them were for generic drugs. CMS names the drug for 13 of them, across 1 drug with 11 or more claims each, at $161 in total drug cost. In 2022, CMS named 430 claims across 16 drugs.
Part D claims, 202422
Drugs named by CMS1
Total drug cost$161
Dr. Matthews' Part D claims by kind of drug, 2024
- Generic20 claims91%
- Brand-name and other2 claims9%
Dr. Matthews' most prescribed drugs by claims, 2023
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2022 to 2023
- 2022
- 2023
- Claims for drugs CMS names
- 2022: 4302023: 1397%
Drugs named by CMS: 1 in 2023, 16 in 2022.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Dr. Oscar A. Matthews has 2 publications on record
Dmand AI links 2 papers to Dr. Matthews. Dr. Matthews' most frequent co-author is J. Edward Rosenthal, MD.
Papers2
Dr. Matthews' most frequent co-authors
Recent publications by Dr. Matthews
See who Dr. Matthews researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Matthews works with, so you can find a warm path to the right cardiologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Oscar A. Matthews received $15,777 in industry payments from 2016 to 2025
CMS Open Payments shows 388 general payments to Dr. Matthews from 37 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 77% of the total. Medtronic Vascular, Inc. paid the most, $3,748.
General payments to Dr. Matthews by program year, 2016 to 2025
General payments to Dr. Matthews by kind, 2016 to 2025
$15.8Kin total
- Food and beverage$12,21577%
- Travel and lodging$3,54222%
- Education$200%
Companies that paid Dr. Matthews the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Oscar A. Matthews has 1 award and honors on record
Dmand AI lists 1 award for Dr. Matthews.
Awards and honors for Dr. Matthews
- Undated
- ACC Fellow
Source: Dmand AI Professional Profile Data
Dr. Oscar A. Matthews graduated from Universidad Nacional de Cordoba
Dr. Matthews graduated from Universidad Nacional de Cordoba in 1964.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Oscar A. Matthews's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Oscar A. Matthews
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Oscar A. Matthews' NPI number?
Dr. Oscar A. Matthews' NPI number is 1053300673. It was assigned on October 17, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Oscar A. Matthews?
Dr. Oscar A. Matthews is a cardiologist in Vista, California. The primary specialty in the NPI Registry is Cardiovascular Disease Physician (taxonomy code 207RC0000X).
Where does Dr. Oscar A. Matthews practice?
Dr. Matthews practices at 2095 W Vista Way Ste 107 Suite 107, Vista, CA 92083-6028. Dr. Matthews' primary practice is Cambrian Cardiology in Vista, California. Dmand AI also links Dr. Matthews to 3 physician offices.
What is Dr. Oscar A. Matthews' office phone number?
The practice phone on file for Dr. Matthews is (760) 941-4005.
What is Dr. Oscar A. Matthews' medical license number?
Dr. Matthews holds California license A24880, one of the licenses on file in 2 states.
Which states has Dr. Oscar A. Matthews been licensed in?
Dmand AI has state licenses on file for Dr. Matthews in California (since 1972) and Texas (1971 to 2004).
Does Dr. Oscar A. Matthews accept Medicare?
Yes. CMS data shows Dr. Matthews billed Medicare for 315 services in 2022.
What services does Dr. Oscar A. Matthews bill to Medicare?
In 2022, Dr. Matthews' most billed Medicare services were heart test or procedure (93000), office visit, established patient (99215) and office visit, established patient (99214).
Where did Dr. Oscar A. Matthews go to medical school?
Dr. Matthews graduated from Universidad Nacional de Cordoba in 1964.
What drugs does Dr. Oscar A. Matthews prescribe most?
In 2023 Medicare Part D data, Dr. Matthews' most prescribed drugs by claims were Atorvastatin Calcium.
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Has Dr. Oscar A. Matthews received payments from drug or device companies?
CMS Open Payments shows $15,777 in general payments to Dr. Matthews from 37 companies from 2016 to 2025. The largest total came from Medtronic Vascular, Inc.
How long has Dr. Oscar A. Matthews been practicing?
Dr. Matthews graduated from medical school in 1964, 62 years ago.
Does Dr. Oscar A. Matthews do research?
Dmand AI links 2 publications to Dr. Matthews.
Who does Dr. Oscar A. Matthews publish with?
Dr. Matthews' most frequent co-authors are J. Edward Rosenthal, MD (1 shared paper).
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