Patrick William O'Brien, PA
Surgical Physician Assistant · Phoenix, AZ
Patrick William O'Brien, PA is a surgical physician assistant with a practice address in Phoenix, Arizona, and NPI 1124076757, issued on May 5, 2006. Check the license (Arizona 1320, as entered in NPPES) with the Arizona board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Patrick William O'Brien
- Credential
- PA
- Primary taxonomy
- Surgical Physician Assistant 363AS0400X
- License numbers
- 1320 AZ
2010041704 MO
Self-reported in NPPES; status is on the state search - Practice location
- 9225 N 3RD St Ste 307, Phoenix, AZ 85020
- Phone
- (602) 870-6316
- Enumerated
- May 5, 2006
- Record last updated
- Jan 12, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (602) 870-6091
- Entity
- Type 1 · individual
8 nearest surgical physician assistant records → All 420 in Arizona → Look up another NPI →
Also registered at 9225 N 3RD St Ste 307
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Bryan Kaye, MDEmergency Medicine Physician1568807824
- Zeena Merchant, D.O.Emergency Medicine Physician1376806844
- Robert Mintz, D.O.Emergency Medicine Physician1689802209
Verify Patrick William O'Brien in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Arizona board licenses this profession
Search for license 1320Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
66% fewer Medicare Part D claims than the average surgical physician assistant in 2024
103 Medicare Part D claims for 80 beneficiaries, against an average of 304 among the 10,174 providers of this specialty who prescribed in Part D. 27 claims were for opioids.
Most prescribed
- Oxycodone-Acetaminophen18 claims
- Amoxicillin-Clavulanate Potass15 claims
- Cephalexin13 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.
Patrick William O'Brien among 420 surgical physician assistant records in Arizona
Patrick William O'Brien, PA is one of 420 surgical physician assistant records with a practice address in Arizona. 70% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 7% of them.
- NPI issued2006 · 7% of these records are older, 72% newer
- In a Medicare fileYes · 70% of these records are
- In the CMS Doctors and Clinicians fileNo · 64% of these records are
- Record last updated2021 · 45% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363AS0400X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Surgical Physician Assistant providers in Arizona
There are 420 surgical physician assistant records in Arizona.
All 420 in Arizona → Every provider in Phoenix → Surgical Physician Assistant nationwide →
The 8 surgical physician assistant records with the nearest ZIP codes
- Lucas Andersen, MMS,PA-CPhoenix, AZ 850201538839907
- Nicholas Davis, PA-CPhoenix, AZ 850201558817957
- Karla Frick, MMS,PA-CPhoenix, AZ 850201154308567
- Jennifer Keathley, MMS,PA-CPhoenix, AZ 850201073848248
- Tyler Knudsen, MMS,PA-CPhoenix, AZ 850201902389273
- Andrew Kuhlman, PA-CPhoenix, AZ 850201003172560
- Tyler Spivey, PA-CPhoenix, AZ 850201528618543
- Michael White, P.A.Phoenix, AZ 850201376520205
Common questions
What is Patrick William O'Brien, PA's NPI number?
Patrick William O'Brien, PA's National Provider Identifier (NPI) is 1124076757, issued on May 5, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Patrick William O'Brien, PA located?
The NPPES record lists a practice address at 9225 N 3RD St Ste 307, Phoenix, AZ, 85020. Phone: (602) 870-6316. Providers update this record themselves, so call before visiting.
How can I verify Patrick William O'Brien, PA's license?
NPPES lists Arizona license number 1320, as entered by the provider. Search the Arizona board that licenses this profession; the NPPES record confirms identity only.
How much does Patrick William O'Brien, PA prescribe under Medicare Part D?
In 2024, Patrick William O'Brien, PA had 103 Medicare Part D claims for 80 beneficiaries; the average among surgical physician assistant prescribers was 304. 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.