Ruth Lopez, MD
Family Medicine Physician · Riverdale, CA
Ruth Lopez, MD is a family medicine physician with a practice address in Riverdale, California, and NPI 1174150478, issued on Mar 25, 2020. Check the license (California A181011, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ruth Lopez
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- A181011 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3567 W Mount Whitney Ave, Riverdale, CA 93656
- Phone
- (559) 867-7200
- Enumerated
- Mar 25, 2020
- Record last updated
- Nov 25, 2025
- Medicare enrollment
- Enrolled (PECOS I20231007000521); may accept Medicare assignment
- Entity
- Type 1 · individual
Also registered at 3567 W Mount Whitney Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Christopher Richardson, D.O.Critical Care Medicine (Internal Medicine) Physician1821418468
Verify Ruth Lopez in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A181011Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
59% fewer Medicare Part D claims than the average family medicine physician in 2024
1,466 Medicare Part D claims for 141 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims. 21 claims were for opioids.
Most prescribed
- Atorvastatin Calcium117 claims
- Metformin Hcl72 claims
- Amlodipine Besylate61 claims
- Levothyroxine Sodium58 claims
- Lisinopril53 claims
- Losartan Potassium45 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
- Central Valley General HospitalHanford, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
1 family medicine physician records list a practice address in Riverdale
They are 1 of the 17 NPPES records with a practice address in Riverdale, and 17,133 family medicine physician records in California.
Other family medicine physician records in California
- Omer Aba-Omer, MDSanta Monica, CA1649702093
- Michelle Ababa, MDWilmington, CA1710922513
- Anna Tzeitel Abalos, MDRoseville, CA1720200017
- Adan Abarca, MDAnaheim, CA1760553689
- Vanessa Abarca, DOVentura, CA1952040859
- Lorraine Abate, M.D.Sacramento, CA1104840008
- Robert Abatecola, MDCastro Valley, CA1669551719
- Romeo Abaya, M.D.Cottonwood, CA1598053506
- Effiem Abbah, MD, MPHSan Francisco, CA1821185133
- Khuzeman Abbasi, MDSanta Rosa, CA1841979952
Common questions
What is Ruth Lopez, MD's NPI number?
Ruth Lopez, MD's National Provider Identifier (NPI) is 1174150478, issued on Mar 25, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Ruth Lopez, MD located?
The NPPES record lists a practice address at 3567 W Mount Whitney Ave, Riverdale, CA, 93656. Phone: (559) 867-7200. Providers update this record themselves, so call before visiting.
How can I verify Ruth Lopez, MD's license?
NPPES lists California license number A181011, 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 Ruth Lopez, MD prescribe under Medicare Part D?
In 2024, Ruth Lopez, MD had 1,466 Medicare Part D claims for 141 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.