Ronald Leonard Polito, M.D.
Internal Medicine Physician · La Canada, CA
Ronald Leonard Polito, M.D. is an internal medicine physician with a practice address in La Canada, California, and NPI 1992053441, issued on Aug 15, 2012. Check the license (California AFE22005, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ronald Leonard Polito
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- AFE22005 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4381 Shepherds Lane, La Canada, CA 91011
- Phone
- (818) 421-4446
- Enumerated
- Aug 15, 2012
- Record last updated
- Aug 15, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (818) 790-0118
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Verify Ronald Leonard Polito in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license AFE22005Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
100% fewer Medicare Part D claims than the average internal medicine physician in 2024
14 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
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.
Ronald Leonard Polito among 17,696 internal medicine physician records in California
Ronald Leonard Polito, 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 2012, is newer than 68% of them.
- NPI issued2012 · 68% of these records are older, 29% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2012 · 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).
8 internal medicine physician records list a practice address in La Canada
They are 8 of the 222 NPPES records with a practice address in La Canada, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in La Canada → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Julia Cassetta, M.D.La Canada, CA 910111548279383
- Christa Chandy, M.D.La Canada, CA 910111437340759
- Christine Hanna, M.D.La Canada, CA 910111316325889
- Cecilia Kaesler, DOLa Canada, CA 910111326092891
- Nasreen Sabir, MDFlintridge, CA 910111306990494
- Denise Soto, D.O.La Canada, CA 910111730354911
- Barbara Turner, MDLa Canada, CA 910111245267152
- Carrie Ward, M.D.La Canada, CA 910111407116890
Common questions
What is Ronald Leonard Polito, M.D.'s NPI number?
Ronald Leonard Polito, M.D.'s National Provider Identifier (NPI) is 1992053441, issued on Aug 15, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Ronald Leonard Polito, M.D. located?
The NPPES record lists a practice address at 4381 Shepherds Lane, La Canada, CA, 91011. Phone: (818) 421-4446. Providers update this record themselves, so call before visiting.
How can I verify Ronald Leonard Polito, M.D.'s license?
NPPES lists California license number AFE22005, 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 Ronald Leonard Polito, M.D. prescribe under Medicare Part D?
In 2024, Ronald Leonard Polito, M.D. had 14 Medicare Part D claims; 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.