Juan Manuel Oliva, MD
Family Medicine Physician · Fontana, CA
Juan Manuel Oliva, MD is a family medicine physician with a practice address in Fontana, California, and NPI 1023133527, issued on Mar 21, 2007. Check the license (California A91940, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Juan Manuel Oliva
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- A91940 CA
MD227110 OR
MD70032208 WA
Self-reported in NPPES; status is on the state search - Practice location
- 17284 Slover Ave, Fontana, CA 92337
- Phone
- (909) 609-3000
- Enumerated
- Mar 21, 2007
- Record last updated
- Jun 10, 2026
- Medicare enrollment
- Enrolled (PECOS I20080516000629); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 17284 Slover Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nancy Amarin, LCSWClinical Social Worker1588309306
- Wasil Aqil, D.OFamily Medicine Physician1659535318
- Asal AzizoddinOncology Pharmacist1871976704
- Alexander Cao, PHARM.D.Pharmacotherapy Pharmacist1891786869
- Sylvain Casimir, PHARM.D.Oncology Pharmacist1376820407
- Christine Castro, PHARM.D., BCPSPharmacotherapy Pharmacist1801238332
Verify Juan Manuel Oliva in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A91940Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
34% fewer Medicare Part D claims than the average family medicine physician in 2024
2,341 Medicare Part D claims for 417 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 49 claims were for opioids.
Most prescribed
- Atorvastatin Calcium216 claims
- Metformin Hcl120 claims
- Amlodipine Besylate105 claims
- Rosuvastatin Calcium100 claims
- Losartan Potassium97 claims
- Lisinopril88 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 GroupSan Diego, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Juan Manuel Oliva among 17,133 family medicine physician records in California
Juan Manuel Oliva, MD is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 41% of them.
- NPI issued2007 · 41% of these records are older, 47% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2003 · median 2005 among the 10,652 with a school on file
- Record last updated2026 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
198 family medicine physician records list a practice address in Fontana
They are 198 of the 3,012 NPPES records with a practice address in Fontana, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Fontana → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Wasil Aqil, D.OFontana, CA 923371659535318
- Eric Chen, M.D.Fontana, CA 923371871697250
- Jagdeep Mehrok, M.DFontana, CA 923371760558332
- John Terando, MDFontana, CA 923371346291598
- Raghad Al-AubidFontana, CA 923361184363012
- Jose Arciniega, D.O.Fontana, CA 923361265642052
- Emmanuel Baidoo, D.O.Fontana, CA 923361831319516
- Hannah Chan, MDFontana, CA 923361093465791
Common questions
What is Juan Manuel Oliva, MD's NPI number?
Juan Manuel Oliva, MD's National Provider Identifier (NPI) is 1023133527, issued on Mar 21, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Juan Manuel Oliva, MD located?
The NPPES record lists a practice address at 17284 Slover Ave, Fontana, CA, 92337. Phone: (909) 609-3000. Providers update this record themselves, so call before visiting.
How can I verify Juan Manuel Oliva, MD's license?
NPPES lists California license number A91940, 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 Juan Manuel Oliva, MD prescribe under Medicare Part D?
In 2024, Juan Manuel Oliva, MD had 2,341 Medicare Part D claims for 417 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.