Brett Heslop, PA-C
Medical Physician Assistant · Ontario, CA
Brett Heslop, PA-C is a medical physician assistant with a practice address in Ontario, California, and NPI 1942601018, issued on Sep 9, 2014. Check the license (California PA51907, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Brett Heslop
- Credential
- PA-C
- Primary taxonomy
- Medical Physician Assistant 363AM0700X
- License number
- PA51907 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2295 S Vineyard Ave, Ontario, CA 91761
- Phone
- (833) 574-2273
- Enumerated
- Sep 9, 2014
- Record last updated
- Jul 31, 2026
- Medicare enrollment
- Enrolled (PECOS I20150616002026); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest medical physician assistant records → All 3,376 in California → Look up another NPI →
Also registered at 2295 S Vineyard Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Brett Heslop in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PA51907Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
82% fewer Medicare Part D claims than the average medical physician assistant in 2024
202 Medicare Part D claims for 80 beneficiaries, against an average of 1,148 among the 23,801 providers of this specialty who prescribed in Part D. 73 claims were for opioids.
Most prescribed
- Oxycodone Hcl44 claims
- Celecoxib42 claims
- Pantoprazole Sodium36 claims
- Tramadol Hcl19 claims
- Gabapentin16 claims
- Methocarbamol13 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 79.3 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Brett Heslop among 3,376 medical physician assistant records in California
Brett Heslop, PA-C is one of 3,376 medical physician assistant records with a practice address in California. 69% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 58% of them.
- NPI issued2014 · 58% of these records are older, 38% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileYes · 40% of these records are
- Graduated2014 · median 2012 among the 1,347 with a school on file
- Record last updated2026 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363AM0700X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Medical Physician Assistant providers in California
There are 3,376 medical physician assistant records in California.
All 3,376 in California → Every provider in Ontario → Medical Physician Assistant nationwide →
The 8 medical physician assistant records with the nearest ZIP codes
- Lilian Chou, PA-COntario, CA 917611306175021
- Gregory Musselman, PA-COntario, CA 917611659829513
- Rafael Romero, PA-COntario, CA 917611801127170
- Cristina VelasquezOntario, CA 917611114735511
- Audrey WagdyOntario, CA 917611366225906
- Jennifer Yim, PA-COntario, CA 917621588907802
- Esther Agepogu, PA-CMontclair, CA 917631982846499
- Charinda Charoen, P.A.Montclair, CA 917631437440625
Common questions
What is Brett Heslop, PA-C's NPI number?
Brett Heslop, PA-C's National Provider Identifier (NPI) is 1942601018, issued on Sep 9, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Brett Heslop, PA-C located?
The NPPES record lists a practice address at 2295 S Vineyard Ave, Ontario, CA, 91761. Phone: (833) 574-2273. Providers update this record themselves, so call before visiting.
How can I verify Brett Heslop, PA-C's license?
NPPES lists California license number PA51907, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Brett Heslop, PA-C prescribe under Medicare Part D?
In 2024, Brett Heslop, PA-C had 202 Medicare Part D claims for 80 beneficiaries; the average among medical physician assistant prescribers was 1,148. Part D covers Medicare prescriptions only.
What is Brett Heslop, PA-C's MIPS final score?
The 2023 MIPS final score is 79.3 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.