Gus G. Gialamas, MD
Specialist · San Clemente, CA
Gus G. Gialamas, MD is a specialist with a practice address in San Clemente, California, and NPI 1992735914, issued on Jul 4, 2006. Check the license (California G63372, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Gus G. Gialamas
- Credential
- MD
- Primary taxonomy
- Specialist 174400000X
- License number
- G63372 CA
Self-reported in NPPES; status is on the state search - Practice location
- 653 Camino DE Los Mares Ste 109, San Clemente, CA 92673
- Phone
- (949) 661-2423
- Enumerated
- Jul 4, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (949) 661-9205
- Entity
- Type 1 · individual
8 nearest specialist records → All 5,749 in California → Look up another NPI →
Also registered at 653 Camino DE Los Mares Ste 109
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Adam Franklin, M.D.Orthopaedic Surgery Physician1508084120
- Darcy Schroer, PAMedical Physician Assistant1003840141
- William Van Der ReisSpecialist1710911078
Verify Gus G. Gialamas in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license G63372Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% fewer Medicare Part D claims than the average specialist in 2024
85 Medicare Part D claims for 60 beneficiaries, against an average of 1,380 among the 8,233 providers of this specialty who prescribed in Part D. 40 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen34 claims
- Cephalexin21 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): 7.5 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: $106.39
2 payments; by number, the most common kind was food and beverage; the largest payer was Smith+Nephew, Inc. 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.
Gus G. Gialamas among 5,749 specialist records in California
Gus G. Gialamas, 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).
9 specialist records list a practice address in San Clemente
They are 9 of the 969 NPPES records with a practice address in San Clemente, and 5,749 specialist records in California.
All 5,749 in California → Every provider in San Clemente → Specialist nationwide →
The 8 specialist records with the nearest ZIP codes
- Deborah Brownstone, M.D.San Clemente, CA 926731821187857
- Teresa Delatolla Fiano, PTSan Clemente, CA 926731528309754
- Amanda Fink, OTR/LSan Clemente, CA 926731275814378
- Richard HugginsSan Clemente, CA 926731881091023
- Veena Menda, M.DSan Clemente, CA 926731427398718
- Stephanie Reese, PHDSan Clemente, CA 926731730453002
- William Van Der ReisSan Clemente, CA 926731710911078
- David Zander, M.D.San Clemente, CA 926731922023399
Common questions
What is Gus G. Gialamas, MD's NPI number?
Gus G. Gialamas, MD's National Provider Identifier (NPI) is 1992735914, issued on Jul 4, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gus G. Gialamas, MD located?
The NPPES record lists a practice address at 653 Camino DE Los Mares Ste 109, San Clemente, CA, 92673. Phone: (949) 661-2423. Providers update this record themselves, so call before visiting.
How can I verify Gus G. Gialamas, MD's license?
NPPES lists California license number G63372, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Gus G. Gialamas, MD prescribe under Medicare Part D?
In 2024, Gus G. Gialamas, MD had 85 Medicare Part D claims for 60 beneficiaries; the average among specialist prescribers was 1,380. Part D covers Medicare prescriptions only.
What is Gus G. Gialamas, MD's MIPS final score?
The 2023 MIPS final score is 7.5 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.