Robert K. Masters, M.D.
Cardiovascular Disease Physician · Laguna Hills, CA
Robert K. Masters, M.D. is a cardiovascular disease physician with a practice address in Laguna Hills, California, and NPI 1871685214, issued on Sep 29, 2006. Check the license (California A25423, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Robert K. Masters
- Credential
- M.D.
- Primary taxonomy
- Cardiovascular Disease Physician 207RC0000X
- License number
- A25423 CA
Self-reported in NPPES; status is on the state search - Practice location
- 24411 Health Center Dr, Laguna Hills, CA 92653
- Phone
- (949) 770-6252
- Enumerated
- Sep 29, 2006
- Record last updated
- Dec 17, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (949) 916-0140
- Medicare enrollment
- Enrolled (PECOS I20090618000748); accepts Medicare assignment
- Medical or professional school
- University Of California, Irvine, California College Of Medicine, 1972
- Entity
- Type 1 · individual
8 nearest cardiovascular disease physician records → All 2,574 in California → Look up another NPI →
Also registered at 24411 Health Center Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Margaret Audell, MDObstetrics & Gynecology Physician1487602199
- Henry Bruce, M.D.Specialist1114920535
Verify Robert K. Masters in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A25423Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
12% fewer Medicare Part D claims than the average cardiovascular disease physician in 2024
2,707 Medicare Part D claims for 415 beneficiaries, against an average of 3,078 among the 20,728 providers of this specialty who prescribed in Part D. Brand-name drugs were 20% of claims.
Most prescribed
- Atorvastatin Calcium239 claims
- Amiodarone Hcl195 claims
- Furosemide180 claims
- Eliquis141 claims
- Metoprolol Succinate131 claims
- Losartan Potassium110 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): 75.8 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).
Industry payments in 2024: $1,182.03
62 payments; by number, the most common kind was food and beverage; the largest payer was Novartis Pharmaceuticals Corporation. The 16,686 providers of this specialty with any payment received $3,819.56 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.
Bills Medicare through one group practice
- South Orange County Cardiology GrpLaguna Hills, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Robert K. Masters among 2,574 cardiovascular disease physician records in California
Robert K. Masters, 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 2006, is newer than 10% of them.
- NPI issued2006 · 10% of these records are older, 45% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated1972 · median 1999 among the 1,742 with a school on file
- Record last updated2008 · 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 Laguna Hills → Cardiovascular Disease Physician nationwide →
The 8 cardiovascular disease physician records with the nearest ZIP codes
- Jeffrey Feiner, M.D.Laguna Hills, CA 926531962594309
- Michael Gault, M.D.Laguna Hills, CA 926531598857930
- Sasan Ghaffari, MDLaguna Hills, CA 926531821092685
- Ronald Gim, M.D.Laguna Hills, CA 926531316039753
- Inderpal Gujral, MDLaguna Hills, CA 926531063416410
- James Hawkins, MDLaguna Hills, CA 926531043279177
- George Konugres, DOLaguna Hills, CA 926531740284108
- Daniel Lamont, M.D.Laguna Hills, CA 926531407948847
Common questions
What is Robert K. Masters, M.D.'s NPI number?
Robert K. Masters, M.D.'s National Provider Identifier (NPI) is 1871685214, issued on Sep 29, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Robert K. Masters, M.D. located?
The NPPES record lists a practice address at 24411 Health Center Dr, Laguna Hills, CA, 92653. Phone: (949) 770-6252. Providers update this record themselves, so call before visiting.
How can I verify Robert K. Masters, M.D.'s license?
NPPES lists California license number A25423, 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 Robert K. Masters, M.D. prescribe under Medicare Part D?
In 2024, Robert K. Masters, M.D. had 2,707 Medicare Part D claims for 415 beneficiaries; the average among cardiovascular disease physician prescribers was 3,078. Part D covers Medicare prescriptions only.
What is Robert K. Masters, M.D.'s MIPS final score?
The 2023 MIPS final score is 75.8 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.