Arthur J. Daigneault, MD
Internal Medicine Physician · Laguna Hills, CA
Arthur J. Daigneault, MD is an internal medicine physician with a practice address in Laguna Hills, California, and NPI 1609845361, issued on Mar 15, 2006. Check the license (California G79967, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Arthur J. Daigneault
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- G79967 CA
Self-reported in NPPES; status is on the state search - Practice location
- 24221 Calle DE LA Louisa, Laguna Hills, CA 92653
- Phone
- (949) 588-8700
- Enumerated
- Mar 15, 2006
- Record last updated
- Nov 15, 2025
- Fax
- (949) 465-8159
- Medicare enrollment
- Enrolled (PECOS I20091222000634); accepts Medicare assignment
- Medical or professional school
- University Of California, Irvine, California College Of Medicine, 1993
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 24221 Calle DE LA Louisa
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Arthur J. Daigneault in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G79967Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.3 times the Medicare Part D claims of the average internal medicine physician in 2024
7,378 Medicare Part D claims for 557 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 112 claims were for opioids.
Most prescribed
- Atorvastatin Calcium503 claims
- Losartan Potassium427 claims
- Amlodipine Besylate360 claims
- Levothyroxine Sodium324 claims
- Simvastatin248 claims
- Metformin Hcl224 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 MIPS final score for 2023 (Medicare payment program): 77.6 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).
Bills Medicare through 2 group practices
- Healthcare Partners Affiliates Medical GroupLaguna Hills, CA
- Saddleback Medical Group IncLaguna Hills, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Arthur J. Daigneault among 17,696 internal medicine physician records in California
Arthur J. Daigneault, MD is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1993 · median 2004 among the 11,065 with a school on file
- Record last updated2025 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
56 internal medicine physician records list a practice address in Laguna Hills
They are 56 of the 2,069 NPPES records with a practice address in Laguna Hills, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Laguna Hills → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Humberto Boccardo, M.D.Laguna Hills, CA 926531689679458
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- Brian HenryLaguna Hills, CA 926531629047824
- Robert Lazatin, M.D.Laguna Hills, CA 926531700865755
- Alan Lo, MDLaguna Hills, CA 926531982683637
- Lawrence Luppi, M.D.Laguna Hills, CA 926531952356727
- Louis Scarcella, MDLaguna Hills, CA 926531821052598
Common questions
What is Arthur J. Daigneault, MD's NPI number?
Arthur J. Daigneault, MD's National Provider Identifier (NPI) is 1609845361, issued on Mar 15, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Arthur J. Daigneault, MD located?
The NPPES record lists a practice address at 24221 Calle DE LA Louisa, Laguna Hills, CA, 92653. Phone: (949) 588-8700. Providers update this record themselves, so call before visiting.
How can I verify Arthur J. Daigneault, MD's license?
NPPES lists California license number G79967, 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 Arthur J. Daigneault, MD prescribe under Medicare Part D?
In 2024, Arthur J. Daigneault, MD had 7,378 Medicare Part D claims for 557 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Arthur J. Daigneault, MD's MIPS final score?
The 2023 MIPS final score is 77.6 of 100. 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.