Christopher Dirda, PA-C
Physician Assistant · Portland, OR
Christopher Dirda, PA-C is a physician assistant with a practice address in Portland, Oregon, and NPI 1336595537, issued on May 6, 2016. Check the license with the Oregon board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Christopher Dirda
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- Practice location
- 2801 N Gantenbein Ave, Portland, OR 97227
- Phone
- (503) 413-2200
- Enumerated
- May 6, 2016
- Record last updated
- Sep 25, 2017 (not updated in 9 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 2,094 in Oregon → Look up another NPI →
Also registered at 2801 N Gantenbein Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Christopher Dirda in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Oregon 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
84% fewer Medicare Part D claims than the average physician assistant in 2024
134 Medicare Part D claims for 90 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. 16 claims were for opioids.
Most prescribed
- Amoxicillin-Clavulanate Potass14 claims
- Cephalexin13 claims
- Oxycodone Hcl12 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.
Industry payments in 2024: $17.39
1 payment: food and beverage; the largest payer was Csl Behring. The 64,719 providers of this specialty with any payment received $841.65 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Christopher Dirda among 2,094 physician assistant records in Oregon
Christopher Dirda, PA-C is one of 2,094 physician assistant records with a practice address in Oregon. 85% 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 48% of them.
- NPI issued2016 · 48% of these records are older, 47% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileNo · 74% of these records are
- Record last updated2017 · 37% 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 Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Physician Assistant providers in Oregon
There are 2,094 physician assistant records in Oregon.
All 2,094 in Oregon → Every provider in Portland → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Robert Buschman, P.A.Portland, OR 972271750495776
- Jerome Casey, PAPortland, OR 972271659486074
- Ian Clemons, PA-CPortland, OR 972271336246479
- Gregory Davenport, PA-CPortland, OR 972271972542009
- James Deitle, PA-CPortland, OR 972271003000753
- Hannah Dodd, PA-CPortland, OR 972271295892024
- Robert Earl, PAPortland, OR 972271376551234
- Daniel Friedman, PAPortland, OR 972271457375198
Common questions
What is Christopher Dirda, PA-C's NPI number?
Christopher Dirda, PA-C's National Provider Identifier (NPI) is 1336595537, issued on May 6, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Christopher Dirda, PA-C located?
The NPPES record lists a practice address at 2801 N Gantenbein Ave, Portland, OR, 97227. Phone: (503) 413-2200. Providers update this record themselves, so call before visiting.
How can I verify Christopher Dirda, PA-C's license?
Search the Oregon board that licenses this profession; the NPPES record confirms identity only.
How much does Christopher Dirda, PA-C prescribe under Medicare Part D?
In 2024, Christopher Dirda, PA-C had 134 Medicare Part D claims for 90 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.