Oscar Esparza, D.D.S
General Practice Dentistry · Ontario, CA
Oscar Esparza, D.D.S is a general practice dentistry with a practice address in Ontario, California, and NPI 1972576130, issued on Feb 8, 2006. Check the license (California 45252, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Oscar Esparza
- Credential
- D.D.S
- Primary taxonomy
- General Practice Dentistry 1223G0001X
- License number
- 45252 CA
Self-reported in NPPES; status is on the state search - Practice location
- 213 W G St, Ontario, CA 91762
- Phone
- (909) 986-6180
- Enumerated
- Feb 8, 2006
- Record last updated
- Oct 18, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (909) 986-6179
- Medicaid ID
- D45252 CA
- Entity
- Type 1 · individual
8 nearest general practice dentistry records → All 17,852 in California → Look up another NPI →
Also registered at 213 W G St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Bianca Esparza, DDSDentist1174045702
- Blanca Esparza, D.D.S.General Practice Dentistry1528031788
- Christopher Esparza, RDHDental Hygienist1174267652
- Jonathan Stuart, DDSGeneral Practice Dentistry1043749062
Verify Oscar Esparza in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 45252Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
55% fewer Medicare Part D claims than the average general practice dentistry in 2024
37 Medicare Part D claims for 24 beneficiaries, against an average of 83 among the 70,290 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Amoxicillin26 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: $79.19
3 payments; by number, the most common kind was food and beverage; the largest payer was Straumann USA LLC. The 41,669 providers of this specialty with any payment received $597.01 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.
Oscar Esparza among 17,852 general practice dentistry records in California
Oscar Esparza, D.D.S is one of 17,852 general practice dentistry records with a practice address in California. 57% 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 3% of them.
- NPI issued2006 · 3% of these records are older, 71% newer
- In a Medicare fileYes · 57% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2018 · 79% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223G0001X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
55 general practice dentistry records list a practice address in Ontario
They are 55 of the 5,375 NPPES records with a practice address in Ontario, and 17,852 general practice dentistry records in California.
All 17,852 in California → Every provider in Ontario → General Practice Dentistry nationwide →
The 8 general practice dentistry records with the nearest ZIP codes
- Shaila Akhave, D.D.S.Ontario, CA 917621063502128
- Abbas Al Jidui, DDSOntario, CA 917621558498162
- M Carbajal, D.D.SOntario, CA 917621194777532
- Renan Chirinos, DDSOntario, CA 917621376687574
- May Cruz, DDSOntario, CA 917621043380975
- Blanca Esparza, D.D.S.Ontario, CA 917621528031788
- Chong Lee, DDSOntario, CA 917621033137773
- Lidia Mendoza, D.D.S.Ontario, CA 917621982667234
Common questions
What is Oscar Esparza, D.D.S's NPI number?
Oscar Esparza, D.D.S's National Provider Identifier (NPI) is 1972576130, issued on Feb 8, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Oscar Esparza, D.D.S located?
The NPPES record lists a practice address at 213 W G St, Ontario, CA, 91762. Phone: (909) 986-6180. Providers update this record themselves, so call before visiting.
How can I verify Oscar Esparza, D.D.S's license?
NPPES lists California license number 45252, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Oscar Esparza, D.D.S prescribe under Medicare Part D?
In 2024, Oscar Esparza, D.D.S had 37 Medicare Part D claims for 24 beneficiaries; the average among general practice dentistry prescribers was 83. 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.