Timothy O'Neill, M.D.
Cardiovascular Disease Physician · Los Alamitos, CA
Timothy O'Neill, M.D. is a cardiovascular disease physician with a practice address in Los Alamitos, California, and NPI 1467493155, issued on Jun 10, 2006. Check the license on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Timothy O'Neill
- Credential
- M.D.
- Primary taxonomy
- Cardiovascular Disease Physician 207RC0000X
- Practice location
- 5300 Katella Ave, Los Alamitos, CA 90720
- Phone
- (562) 430-7533
- Enumerated
- Jun 10, 2006
- Entity
- Type 1 · individual
Also registered at 5300 Katella Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Carlos ArguedasInternal Medicine Physician1023075579
- Ramandeep Brar, M.D.Clinical Cardiac Electrophysiology Physician1821165549
- Valerie Cacho, MDInternal Medicine Physician1528296845
- Stuart Fischer, M.D.Interventional Cardiology Physician1083656086
- Steven Forman, M.D.Interventional Cardiology Physician1023059763
- Diana GlovaciStudent in an Organized Health Care Education/Training Program1366805590
Verify Timothy O'Neill in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of CaliforniaCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
38% fewer Medicare Part D claims than the average cardiovascular disease physician in 2024
1,956 Medicare Part D claims for 333 beneficiaries, against an average of 3,149 among the 19,556 providers of this specialty who prescribed in Part D. Brand-name drugs were 21% of claims.
Most prescribed
- Eliquis282 claims
- Metoprolol Succinate211 claims
- Atorvastatin Calcium132 claims
- Losartan Potassium90 claims
- Amlodipine Besylate88 claims
- Ezetimibe81 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.
The Medicare quality score for 2023: 86.3 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $632.26
29 payments, mostly food and beverage; the largest payer was Novartis Pharmaceuticals Corporation. The 16,209 providers of this specialty with any payment received $4,923.81 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Cardiovascular Disease Physician providers in California
There are 2,322 cardiovascular disease physician records in California.
Other cardiovascular disease physician records in California
- Abdul Abbasi, MDLong Beach, CA1710071717
- Lillian Abdelmalek, MDSacramento, CA1881343796
- Robin Abdelmalik, M.D. FACCTemecula, CA1275656662
- Roberto Abdelnur, MDEl Centro, CA1982648606
- Sohail Abdi-Moradi, M.D.Moorpark, CA1376862938
- Nadia Abelhad, M.D.Chula Vista, CA1619400801
- Mohammad Abid, MD FACCIndio, CA1699857706
- Georges Abou Rjaili, MDRiverside, CA1073896544
- Maria Abraham, M.D.San Francisco, CA1669436960
- Theodore Abraham, M.D.San Francisco, CA1467427096
Common questions
What is Timothy O'Neill, M.D.'s NPI number?
Timothy O'Neill, M.D.'s National Provider Identifier (NPI) is 1467493155, issued on Jun 10, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Timothy O'Neill, M.D. located?
The NPPES record lists a practice address at 5300 Katella Ave, Los Alamitos, CA, 90720. Phone: (562) 430-7533. Providers update this record themselves, so call before visiting.
How can I verify Timothy O'Neill, M.D.'s license?
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 Timothy O'Neill, M.D. prescribe under Medicare Part D?
In 2024, Timothy O'Neill, M.D. had 1,956 Medicare Part D claims for 333 beneficiaries; the average among cardiovascular disease physician prescribers was 3,149. Part D covers Medicare prescriptions only.
What is Timothy O'Neill, M.D.'s Medicare quality score?
The 2023 MIPS final score is 86.3 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.