Brian Corey Irwin, PA-C
Medical Physician Assistant · Oroville, CA
Brian Corey Irwin, PA-C is a medical physician assistant with a practice address in Oroville, California, and NPI 1053566752, issued on Nov 21, 2008. Check the license (California PA20072, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Brian Corey Irwin
- Credential
- PA-C
- Primary taxonomy
- Medical Physician Assistant 363AM0700X
- License number
- PA20072 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2767 Olive Hwy, Oroville, CA 95966
- Phone
- (530) 533-8500
- Enumerated
- Nov 21, 2008
- Record last updated
- Nov 21, 2008 (not updated in 18 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest medical physician assistant records → All 3,376 in California → Look up another NPI →
Also registered at 2767 Olive Hwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Natashya Adams, FNP-CFamily Nurse Practitioner1063979110
- Yesong AhnStudent in an Organized Health Care Education/Training Program1881532810
- Vanessa Akines, FNPNurse Practitioner1790417434
- Phillip Anderson, MDStudent in an Organized Health Care Education/Training Program1811835572
Verify Brian Corey Irwin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PA20072Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
91% fewer Medicare Part D claims than the average medical physician assistant in 2024
107 Medicare Part D claims for 68 beneficiaries, against an average of 1,148 among the 23,801 providers of this specialty who prescribed in Part D.
Most prescribed
- Sulfamethoxazole-Trimethoprim14 claims
- Ibuprofen11 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.
Brian Corey Irwin among 3,376 medical physician assistant records in California
Brian Corey Irwin, 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 2008, is newer than 32% of them.
- NPI issued2008 · 32% of these records are older, 62% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileNo · 40% of these records are
- Record last updated2008 · 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 Oroville → Medical Physician Assistant nationwide →
The 8 medical physician assistant records with the nearest ZIP codes
- Robert MarshallOroville, CA 959661841696515
- Jason Ruby, PA-COroville, CA 959661942573134
- Sane Thai Yang, PA-COroville, CA 959661083973911
- Susan Mathias, P.A. RNOroville, CA 959651306990643
- Rachel Carlson, P.A.,CParadise, CA 959691043253321
- Jessie Corpus, P.A.Orland, CA 959631245272046
- Donald Durett, PA-CParadise, CA 959691972819316
- Christopher Jensen, PA-CParadise, CA 959691457724239
Common questions
What is Brian Corey Irwin, PA-C's NPI number?
Brian Corey Irwin, PA-C's National Provider Identifier (NPI) is 1053566752, issued on Nov 21, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Brian Corey Irwin, PA-C located?
The NPPES record lists a practice address at 2767 Olive Hwy, Oroville, CA, 95966. Phone: (530) 533-8500. Providers update this record themselves, so call before visiting.
How can I verify Brian Corey Irwin, PA-C's license?
NPPES lists California license number PA20072, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Brian Corey Irwin, PA-C prescribe under Medicare Part D?
In 2024, Brian Corey Irwin, PA-C had 107 Medicare Part D claims for 68 beneficiaries; the average among medical physician assistant prescribers was 1,148. 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.