Domingo Chua Barrientos, M.D.
Internal Medicine Physician · Downey, CA
Domingo Chua Barrientos, M.D. is an internal medicine physician with a practice address in Downey, California, and NPI 1184685281, issued on Mar 29, 2006. Check the license (California A56239, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Domingo Chua Barrientos
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A56239 CA
Self-reported in NPPES; status is on the state search - Practice location
- 10800 Paramount Blvd, Downey, CA 90241
- Phone
- (562) 869-1322
- Enumerated
- Mar 29, 2006
- Record last updated
- Dec 8, 2009 (not updated in 17 years: call before relying on the address or phone)
- Medicaid ID
- 00A562390 CA
- Medicare enrollment
- Enrolled (PECOS I20050324001293); may accept Medicare assignment
- Entity
- Type 1 · individual
Also registered at 10800 Paramount Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Neal Brown, DDSDentist1619295862
- Thomas Choi, M.D.Ophthalmology Physician1477555985
- Emma McCulloughMarriage & Family Therapist1609481035
- Steven Nagelberg, M.D.Specialist1114060720
Verify Domingo Chua Barrientos in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A56239Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
10.2 times the Medicare Part D claims of the average internal medicine physician in 2024
32,255 Medicare Part D claims for 1,942 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 103 claims were for opioids.
Most prescribed
- Atorvastatin Calcium2,046 claims
- Amlodipine Besylate1,399 claims
- Metformin Hcl1,366 claims
- Levothyroxine Sodium1,190 claims
- Omeprazole939 claims
- Tamsulosin Hcl897 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.
Industry payments in 2024: $1,217.85
60 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 50,334 providers of this specialty with any payment received $1,303.06 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.
114 internal medicine physician records list a practice address in Downey
They are 114 of the 3,607 NPPES records with a practice address in Downey, and 17,696 internal medicine physician records in California.
All 114 in Downey → All 17,696 in California → Every provider in Downey →
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- Luba Abascal, MDSan Francisco, CA1023180874
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Common questions
What is Domingo Chua Barrientos, M.D.'s NPI number?
Domingo Chua Barrientos, M.D.'s National Provider Identifier (NPI) is 1184685281, issued on Mar 29, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Domingo Chua Barrientos, M.D. located?
The NPPES record lists a practice address at 10800 Paramount Blvd, Downey, CA, 90241. Phone: (562) 869-1322. Providers update this record themselves, so call before visiting.
How can I verify Domingo Chua Barrientos, M.D.'s license?
NPPES lists California license number A56239, 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 Domingo Chua Barrientos, M.D. prescribe under Medicare Part D?
In 2024, Domingo Chua Barrientos, M.D. had 32,255 Medicare Part D claims for 1,942 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.