Sergio Viera
Adult Medicine Physician · Gardena, CA
Sergio Viera is an adult medicine physician with a practice address in Gardena, California, and NPI 1265810964, issued on May 13, 2015. Check the license (California A151628, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Sergio Viera
- Primary taxonomy
- Adult Medicine Physician 207QA0505X
- License number
- A151628 CA
Self-reported in NPPES; status is on the state search - Practice location
- 18600 S Figueroa St, Gardena, CA 90248
- Phone
- (833) 574-2273
- Enumerated
- May 13, 2015
- Record last updated
- Nov 30, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20190304000015); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest adult medicine physician records → All 386 in California → Look up another NPI →
Also registered at 18600 S Figueroa St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Sergio Viera in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A151628Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.1 times the Medicare Part D claims of the average adult medicine physician in 2024
6,235 Medicare Part D claims for 1,564 beneficiaries, against an average of 3,002 among the 1,307 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 103 claims were for opioids.
Most prescribed
- Atorvastatin Calcium561 claims
- Amlodipine Besylate353 claims
- Lisinopril333 claims
- Losartan Potassium273 claims
- Metformin Hcl239 claims
- Meloxicam184 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.
Bills Medicare through one group practice
- Southern California Permanente Medical GroupGardena, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Sergio Viera among 386 adult medicine physician records in California
Sergio Viera is one of 386 adult medicine physician records with a practice address in California. 69% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 72% of them.
- NPI issued2015 · 72% of these records are older, 27% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileYes · 48% of these records are
- Graduated2014 · median 2005 among the 187 with a school on file
- Record last updated2021 · 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 207QA0505X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Adult Medicine Physician providers in California
There are 386 adult medicine physician records in California.
All 386 in California → Every provider in Gardena → Adult Medicine Physician nationwide →
The 8 adult medicine physician records with the nearest ZIP codes
- Sedona Valentine, MDGardena, CA 902481841653193
- Angelina NguyenGardena, CA 902491225830227
- Stephan Honda, M.D.Hawthorne, CA 902501295936615
- Thanh Ha, DODowney, CA 902411689098162
- John Molitoris, M.D.Culver City, CA 902321588866982
- Olga Makaron, M.D.Marina Del Rey, CA 902921538476031
- Danielle Davidson-McBeanInglewood, CA 903011689782013
- Joseph Pierson, M.D.Inglewood, CA 903011457376790
Common questions
What is Sergio Viera's NPI number?
Sergio Viera's National Provider Identifier (NPI) is 1265810964, issued on May 13, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Sergio Viera located?
The NPPES record lists a practice address at 18600 S Figueroa St, Gardena, CA, 90248. Phone: (833) 574-2273. Providers update this record themselves, so call before visiting.
How can I verify Sergio Viera's license?
NPPES lists California license number A151628, 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 Sergio Viera prescribe under Medicare Part D?
In 2024, Sergio Viera had 6,235 Medicare Part D claims for 1,564 beneficiaries; the average among adult medicine physician prescribers was 3,002. 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.