Bonnie J. Gainer, M.D.
Cardiovascular Disease Physician · Newport Beach, CA
Bonnie J. Gainer, M.D. is a cardiovascular disease physician with a practice address in Newport Beach, California, and NPI 1972592319, issued on Oct 18, 2005. Check the license (California G55764, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Bonnie J. Gainer
- Credential
- M.D.
- Primary taxonomy
- Cardiovascular Disease Physician 207RC0000X
- License number
- G55764 CA
Self-reported in NPPES; status is on the state search - Practice location
- 415 Old Newport Blvd, Newport Beach, CA 92663
- Phone
- (949) 548-9611
- Enumerated
- Oct 18, 2005
- Record last updated
- Feb 18, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (949) 548-9958
- Medicaid ID
- GR00750606 CA
- Entity
- Type 1 · individual
8 nearest cardiovascular disease physician records → All 2,574 in California → Look up another NPI →
Also registered at 415 Old Newport Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jeffrey Bruss, M.D.Cardiovascular Disease Physician1942290309
- Jean Carlos, NPAcute Care Nurse Practitioner1740246982
- Richard Haskell, M.D.Cardiovascular Disease Physician1992794465
- Neala Hunter, M.D.Cardiovascular Disease Physician1952390395
- Desmond Levin, M.D.Cardiovascular Disease Physician1730178807
- Catalin Marinescu, M.D.Obstetrics & Gynecology Physician1669761664
Verify Bonnie J. Gainer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G55764Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
47% fewer Medicare Part D claims than the average cardiovascular disease physician in 2024
1,637 Medicare Part D claims for 369 beneficiaries, against an average of 3,078 among the 20,728 providers of this specialty who prescribed in Part D. Brand-name drugs were 23% of claims.
Most prescribed
- Eliquis237 claims
- Metoprolol Succinate135 claims
- Atorvastatin Calcium130 claims
- Amlodipine Besylate121 claims
- Losartan Potassium82 claims
- Clopidogrel66 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 practice group's MIPS final score for 2023 (Medicare payment program): 71.8 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Bonnie J. Gainer among 2,574 cardiovascular disease physician records in California
Bonnie J. Gainer, 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 updated2020 · 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 Newport Beach → Cardiovascular Disease Physician nationwide →
The 8 cardiovascular disease physician records with the nearest ZIP codes
- Thomas Benvenuti, MDNewport Beach, CA 926631699708966
- Darel Benvenuti, MDNewport Beach, CA 926631912915364
- Jeffrey Bruss, M.D.Newport Beach, CA 926631942290309
- Richard Haskell, M.D.Newport Beach, CA 926631992794465
- Neala Hunter, M.D.Newport Beach, CA 926631952390395
- Dipti Itchhaporia, MDNewport Beach, CA 926631316990070
- Desmond Levin, M.D.Newport Beach, CA 926631730178807
- Subbarao Mylavarapu, MDNewport Beach, CA 926631659330850
Common questions
What is Bonnie J. Gainer, M.D.'s NPI number?
Bonnie J. Gainer, M.D.'s National Provider Identifier (NPI) is 1972592319, issued on Oct 18, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Bonnie J. Gainer, M.D. located?
The NPPES record lists a practice address at 415 Old Newport Blvd, Newport Beach, CA, 92663. Phone: (949) 548-9611. Providers update this record themselves, so call before visiting.
How can I verify Bonnie J. Gainer, M.D.'s license?
NPPES lists California license number G55764, 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 Bonnie J. Gainer, M.D. prescribe under Medicare Part D?
In 2024, Bonnie J. Gainer, M.D. had 1,637 Medicare Part D claims for 369 beneficiaries; the average among cardiovascular disease physician prescribers was 3,078. Part D covers Medicare prescriptions only.
What is Bonnie J. Gainer, M.D.'s MIPS final score?
The 2023 MIPS final score is 71.8 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.