Ronald James Pratt, P.A-C
Physician Assistant · Ontario, CA
Ronald James Pratt, P.A-C is a physician assistant with a practice address in Ontario, California, and NPI 1215119250, issued on Dec 1, 2007. Check the license (California 19220, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Ronald James Pratt
- Credential
- P.A-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 19220 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1910 S Archibald Ave Ste E2, Ontario, CA 91761
- Phone
- (909) 930-5270
- Enumerated
- Dec 1, 2007
- Record last updated
- Dec 1, 2007 (not updated in 19 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 14,451 in California → Look up another NPI →
Verify Ronald James Pratt in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 19220Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
12% more Medicare Part D claims than the average physician assistant in 2024
928 Medicare Part D claims for 109 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 25% of claims.
Most prescribed
- Atorvastatin Calcium99 claims
- Amlodipine Besylate59 claims
- Metformin Hcl52 claims
- Ozempic52 claims
- Benazepril Hcl47 claims
- Trulicity38 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.
Ronald James Pratt among 14,451 physician assistant records in California
Ronald James Pratt, P.A-C is one of 14,451 physician assistant records with a practice address in California. 75% 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 13% of them.
- NPI issued2007 · 13% of these records are older, 78% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 50% of these records are
- Record last updated2007 · 40% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
37 physician assistant records list a practice address in Ontario
They are 37 of the 5,375 NPPES records with a practice address in Ontario, and 14,451 physician assistant records in California.
All 14,451 in California → Every provider in Ontario → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Kevin BellOntario, CA 917611497159818
- Lauren BoldaOntario, CA 917611497286082
- Charmaine Collins-Cepeda, PA-COntario, CA 917611801054820
- Carly Erard, PAOntario, CA 917611205087699
- Marcus Harris, P.A-COntario, CA 917611134144876
- Sepideh Homayoni, PA-COntario, CA 917611003357955
- Carol Kwak, PA-COntario, CA 917611891303293
- Robert PedrozaOntario, CA 917611821832551
Common questions
What is Ronald James Pratt, P.A-C's NPI number?
Ronald James Pratt, P.A-C's National Provider Identifier (NPI) is 1215119250, issued on Dec 1, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Ronald James Pratt, P.A-C located?
The NPPES record lists a practice address at 1910 S Archibald Ave Ste E2, Ontario, CA, 91761. Phone: (909) 930-5270. Providers update this record themselves, so call before visiting.
How can I verify Ronald James Pratt, P.A-C's license?
NPPES lists California license number 19220, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Ronald James Pratt, P.A-C prescribe under Medicare Part D?
In 2024, Ronald James Pratt, P.A-C had 928 Medicare Part D claims for 109 beneficiaries; the average among physician assistant prescribers was 830. 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.