Patricia Ibarra, M.D.
Internal Medicine Physician · Riverside, CA
Patricia Ibarra, M.D. is an internal medicine physician with a practice address in Riverside, California, and NPI 1164665949, issued on Apr 9, 2009. Check the license (California G77789, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Patricia Ibarra
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- G77789 CA
Self-reported in NPPES; status is on the state search - Practice location
- 10800 Magnolia Ave, Riverside, CA 92505
- Phone
- (866) 984-7483
- Enumerated
- Apr 9, 2009
- Record last updated
- Dec 2, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid ID
- 00G777890 CA
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 10800 Magnolia Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Patricia Ibarra in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G77789Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
47% fewer Medicare Part D claims than the average internal medicine physician in 2024
1,680 Medicare Part D claims for 320 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims.
Most prescribed
- Losartan Potassium159 claims
- Atorvastatin Calcium130 claims
- Amlodipine Besylate113 claims
- Metformin Hcl109 claims
- Lisinopril106 claims
- Levothyroxine Sodium65 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.
Patricia Ibarra among 17,696 internal medicine physician records in California
Patricia Ibarra, M.D. is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 60% of them.
- NPI issued2009 · 60% of these records are older, 37% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2021 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
187 internal medicine physician records list a practice address in Riverside
They are 187 of the 13,893 NPPES records with a practice address in Riverside, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Riverside → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Susan Diethelm, MDRiverside, CA 925051023185857
- Kathleen Fanning, MDRiverside, CA 925051427125335
- Thanh Hoang, MDRiverside, CA 925051174690994
- Ricardo Lim, MDRiverside, CA 925051336216159
- Iwan Ong, MDRiverside, CA 925051265416739
- Humera Rana, M.D.Riverside, CA 925051801982632
- Terence Shum, MDRiverside, CA 925051124195946
- Harneet Singh, MDRiverside, CA 925051114094943
Common questions
What is Patricia Ibarra, M.D.'s NPI number?
Patricia Ibarra, M.D.'s National Provider Identifier (NPI) is 1164665949, issued on Apr 9, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Patricia Ibarra, M.D. located?
The NPPES record lists a practice address at 10800 Magnolia Ave, Riverside, CA, 92505. Phone: (866) 984-7483. Providers update this record themselves, so call before visiting.
How can I verify Patricia Ibarra, M.D.'s license?
NPPES lists California license number G77789, 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 Patricia Ibarra, M.D. prescribe under Medicare Part D?
In 2024, Patricia Ibarra, M.D. had 1,680 Medicare Part D claims for 320 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.