Colin O'Brien
Physician Assistant · Redmond, WA
Colin O'Brien is a physician assistant with a practice address in Redmond, Washington, and NPI 1174970644, issued on May 15, 2016. Check the license with the Washington board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Colin O'Brien
- Primary taxonomy
- Physician Assistant 363A00000X
- Practice location
- 8980 161St Ave NE Ste 320, Redmond, WA 98052
- Phone
- (425) 883-3333
- Enumerated
- May 15, 2016
- Record last updated
- Jan 9, 2023
- Medicare enrollment
- Enrolled (PECOS I20180111002695); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 3,718 in Washington → Look up another NPI →
Also registered at 8980 161St Ave NE Ste 320
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Stephanie Mack HarmonPhysician Assistant1295182574
Verify Colin O'Brien in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Washington board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
68% fewer Medicare Part D claims than the average physician assistant in 2024
264 Medicare Part D claims for 181 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D.
Most prescribed
- Cefuroxime28 claims
- Nitrofurantoin Mono-Macro27 claims
- Prednisone21 claims
- Amoxicillin-Clavulanate Potass17 claims
- Cephalexin14 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.
Bills Medicare through one group practice
- King County Public Hospital District NO 2Kirkland, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Colin O'Brien among 3,718 physician assistant records in Washington
Colin O'Brien is one of 3,718 physician assistant records with a practice address in Washington. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 53% of them.
- NPI issued2016 · 53% of these records are older, 42% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2017 · median 2017 among the 2,460 with a school on file
- Record last updated2023 · 48% 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 Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
23 physician assistant records list a practice address in Redmond
They are 23 of the 1,797 NPPES records with a practice address in Redmond, and 3,718 physician assistant records in Washington.
All 3,718 in Washington → Every provider in Redmond → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Nathan Bushue, PA-CRedmond, WA 980521073087110
- Ann Gelgisser, P.A.Redmond, WA 980521811026651
- Robert Houk, PARedmond, WA 980521336269901
- Amy Jermann, PARedmond, WA 980521942320502
- Thomas Kimmel, PARedmond, WA 980521851427405
- Martha Kjos, PA-CRedmond, WA 980521427030394
- Stephanie Mack HarmonRedmond, WA 980521295182574
- Heena Patel, PA-CRedmond, WA 980521821640491
Common questions
What is Colin O'Brien's NPI number?
Colin O'Brien's National Provider Identifier (NPI) is 1174970644, issued on May 15, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Colin O'Brien located?
The NPPES record lists a practice address at 8980 161St Ave NE Ste 320, Redmond, WA, 98052. Phone: (425) 883-3333. Providers update this record themselves, so call before visiting.
How can I verify Colin O'Brien's license?
Search the Washington board that licenses this profession; the NPPES record confirms identity only.
How much does Colin O'Brien prescribe under Medicare Part D?
In 2024, Colin O'Brien had 264 Medicare Part D claims for 181 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.