John M. Shamoun, M.D.
Specialist · Newport Beach, CA
John M. Shamoun, M.D. is a specialist with a practice address in Newport Beach, California, and NPI 1528180544, issued on Apr 3, 2007. Check the license (California A052955, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- John M. Shamoun
- Credential
- M.D.
- Primary taxonomy
- Specialist 174400000X
- License number
- A052955 CA
Self-reported in NPPES; status is on the state search - Practice location
- 366 San Miguel Dr Ste 310, Newport Beach, CA 92660
- Phone
- (949) 759-3077
- Enumerated
- Apr 3, 2007
- Record last updated
- Mar 6, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (949) 759-3087
- Entity
- Type 1 · individual
8 nearest specialist records → All 5,749 in California → Look up another NPI →
Verify John M. Shamoun in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license A052955Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average specialist in 2024
27 Medicare Part D claims, against an average of 1,380 among the 8,233 providers of this specialty who prescribed in Part D.
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.
Industry payments in 2024: $427.41
14 payments; by number, the most common kind was food and beverage; the largest payer was Mentor Worldwide LLC. 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.
John M. Shamoun among 5,749 specialist records in California
John M. Shamoun, M.D. 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 2007, is newer than 40% of them.
- NPI issued2007 · 40% of these records are older, 44% newer
- In a Medicare fileYes · 30% of these records are
- In the CMS Doctors and Clinicians fileNo · 19% of these records are
- Record last updated2020 · 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).
53 specialist records list a practice address in Newport Beach
They are 53 of the 4,414 NPPES records with a practice address in Newport Beach, and 5,749 specialist records in California.
All 5,749 in California → Every provider in Newport Beach → Specialist nationwide →
The 8 specialist records with the nearest ZIP codes
- Joseph Apostol, M.D.Newport Beach, CA 926601891877015
- Catherine Chang, M.D.Newport Beach, CA 926601295766426
- Gerald Gostanian, MDNewport Beach, CA 926601851491567
- David Herzlinger, M.D.Newport Beach, CA 926601891785465
- Mark Kan, M.D.Newport Beach, CA 926601336171446
- Ayoub Khaghani, MDNewport Beach, CA 926601922087394
- Yang Kim, M.D.Newport Beach, CA 926601477553667
- Gene Lawrence, M.D.Newport Beach, CA 926601730269879
Common questions
What is John M. Shamoun, M.D.'s NPI number?
John M. Shamoun, M.D.'s National Provider Identifier (NPI) is 1528180544, issued on Apr 3, 2007. An NPI identifies a provider in billing; it is not a license.
Where is John M. Shamoun, M.D. located?
The NPPES record lists a practice address at 366 San Miguel Dr Ste 310, Newport Beach, CA, 92660. Phone: (949) 759-3077. Providers update this record themselves, so call before visiting.
How can I verify John M. Shamoun, M.D.'s license?
NPPES lists California license number A052955, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does John M. Shamoun, M.D. prescribe under Medicare Part D?
In 2024, John M. Shamoun, M.D. had 27 Medicare Part D claims; the average among specialist prescribers was 1,380. Part D covers Medicare prescriptions only.
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.