Christopher Bryan Mayorga, DO
Geriatric Medicine (Internal Medicine) Physician · Torrance, CA
Christopher Bryan Mayorga, DO is a geriatric medicine (internal medicine) physician with a practice address in Torrance, California, and NPI 1003445669, issued on Apr 6, 2020. Check the license (California 20A21015, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Christopher Bryan Mayorga
- Credential
- DO
- Primary taxonomy
- Geriatric Medicine (Internal Medicine) Physician 207RG0300X
- License number
- 20A21015 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1000 W Carson St Bldg N28, Torrance, CA 90502
- Phone
- (424) 306-4446
- Enumerated
- Apr 6, 2020
- Record last updated
- Aug 29, 2024
- Entity
- Type 1 · individual
8 nearest geriatric medicine (internal medicine) physician records → All 532 in California → Look up another NPI →
Also registered at 1000 W Carson St Bldg N28
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Antonio Rivas, M.D.Internal Medicine Physician1740572551
- Jenny Shen, MDNephrology Physician1194963199
- Anne-Lorrane Ugalde, NPGerontology Nurse Practitioner1083805980
Verify Christopher Bryan Mayorga in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A21015Check 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 geriatric medicine (internal medicine) physician in 2024
262 Medicare Part D claims for 58 beneficiaries, against an average of 4,246 among the 3,116 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium31 claims
- Amlodipine Besylate20 claims
- Losartan Potassium14 claims
- Metformin Hcl12 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.
Christopher Bryan Mayorga among 532 geriatric medicine (internal medicine) physician records in California
Christopher Bryan Mayorga, DO is one of 532 geriatric medicine (internal medicine) physician records with a practice address in California. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 93% of them.
- NPI issued2020 · 93% of these records are older, 5% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileNo · 51% of these records are
- Record last updated2024 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0300X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Geriatric Medicine (Internal Medicine) Physician providers in California
There are 532 geriatric medicine (internal medicine) physician records in California.
All 532 in California → Every provider in Torrance → Geriatric Medicine (Internal Medicine) Physician nationwide →
The 8 geriatric medicine (internal medicine) physician records with the nearest ZIP codes
- Abriella Demanes, MDTorrance, CA 905021669036695
- Mailee Hess, MDTorrance, CA 905021396011565
- Kushi Mehrotra, MDTorrance, CA 905021679627889
- Elaine Deemer, DOTorrance, CA 905051649856162
- Marcil Mamita, MDTorrance, CA 905051962412718
- Kenneth Waltzer, M.D.Santa Monica, CA 904051437424090
- Edward Hui, MDSanta Monica, CA 904041184657488
- Matthew Quan, MDSanta Monica, CA 904041275275133
Common questions
What is Christopher Bryan Mayorga, DO's NPI number?
Christopher Bryan Mayorga, DO's National Provider Identifier (NPI) is 1003445669, issued on Apr 6, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Christopher Bryan Mayorga, DO located?
The NPPES record lists a practice address at 1000 W Carson St Bldg N28, Torrance, CA, 90502. Phone: (424) 306-4446. Providers update this record themselves, so call before visiting.
How can I verify Christopher Bryan Mayorga, DO's license?
NPPES lists California license number 20A21015, 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 Christopher Bryan Mayorga, DO prescribe under Medicare Part D?
In 2024, Christopher Bryan Mayorga, DO had 262 Medicare Part D claims for 58 beneficiaries; the average among geriatric medicine (internal medicine) physician prescribers was 4,246. 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.