Samuel Osamu Mayeda, MD
Specialist · Orange, CA
Samuel Osamu Mayeda, MD is a specialist with a practice address in Orange, California, and NPI 1487716544, issued on Dec 15, 2006. Check the license (California C36879, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Samuel Osamu Mayeda
- Credential
- MD
- Primary taxonomy
- Specialist 174400000X
- License number
- C36879 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1140 W LA Veta Ave Ste 420, Orange, CA 92868
- Phone
- (714) 285-1904
- Enumerated
- Dec 15, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (714) 571-5979
- Entity
- Type 1 · individual
8 nearest specialist records → All 5,749 in California → Look up another NPI →
Verify Samuel Osamu Mayeda in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license C36879Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.5 times the Medicare Part D claims of the average specialist in 2024
4,857 Medicare Part D claims for 216 beneficiaries, against an average of 1,380 among the 8,233 providers of this specialty who prescribed in Part D. Brand-name drugs were 26% of claims. 58 claims were for opioids.
Most prescribed
- Levothyroxine Sodium323 claims
- Ezetimibe234 claims
- Rosuvastatin Calcium183 claims
- Amlodipine Besylate162 claims
- Telmisartan128 claims
- Atorvastatin Calcium125 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): 65.6 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).
Industry payments in 2024: $964.61
53 payments; by number, the most common kind was food and beverage; the largest payer was Novartis Pharmaceuticals Corporation. The 5,844 providers of this specialty with any payment received $4,760.79 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.
Samuel Osamu Mayeda among 5,749 specialist records in California
Samuel Osamu Mayeda, MD is one of 5,749 specialist records with a practice address in California. 30% 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 7% of them.
- NPI issued2006 · 7% of these records are older, 60% newer
- In a Medicare fileYes · 30% of these records are
- In the CMS Doctors and Clinicians fileNo · 19% of these records are
- Record last updated2007 · 77% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 174400000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Specialist providers in California
There are 5,749 specialist records in California.
All 5,749 in California → Every provider in Orange → Specialist nationwide →
The 8 specialist records with the nearest ZIP codes
- Michael Arquilla, M.D.Orange, CA 928681598734832
- Birbal Bhaskar, M.D.Orange, CA 928681194773168
- Ayaz Biviji, M.D.Orange, CA 928681023008422
- Michele Carpenter, M.D.Orange, CA 928681770543712
- Richard Faraday, M.D.Orange, CA 928681881662021
- Charles Keller, M.D.Orange, CA 928681558324392
- Thomas Kim, M.D.Orange, CA 928681144225301
- Eric Lee, M.D.Orange, CA 928681720075641
Common questions
What is Samuel Osamu Mayeda, MD's NPI number?
Samuel Osamu Mayeda, MD's National Provider Identifier (NPI) is 1487716544, issued on Dec 15, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Samuel Osamu Mayeda, MD located?
The NPPES record lists a practice address at 1140 W LA Veta Ave Ste 420, Orange, CA, 92868. Phone: (714) 285-1904. Providers update this record themselves, so call before visiting.
How can I verify Samuel Osamu Mayeda, MD's license?
NPPES lists California license number C36879, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Samuel Osamu Mayeda, MD prescribe under Medicare Part D?
In 2024, Samuel Osamu Mayeda, MD had 4,857 Medicare Part D claims for 216 beneficiaries; the average among specialist prescribers was 1,380. Part D covers Medicare prescriptions only.
What is Samuel Osamu Mayeda, MD's MIPS final score?
The 2023 MIPS final score is 65.6 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.