Melissa Willitzer, PA-C
Physician Assistant · Portland, OR
Melissa Willitzer, PA-C is a physician assistant with a practice address in Portland, Oregon, and NPI 1447607577, issued on May 18, 2016. Check the license (Oregon 184240, as entered in NPPES) with the Oregon board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Melissa Willitzer
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 184240 OR
Self-reported in NPPES; status is on the state search - Practice location
- 3181 SW Sam Jackson Park RD, Portland, OR 97239
- Phone
- (503) 494-7500
- Enumerated
- May 18, 2016
- Record last updated
- Dec 11, 2025
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 2,094 in Oregon → Look up another NPI →
Also registered at 3181 SW Sam Jackson Park RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Matthew Abbott, PA-CMedical Physician Assistant1154738003
- Ayah Abdelsalam Megahed, MD, MSCVascular & Interventional Radiology Physician1023503596
- Obada Abdulrazzak, MDStudent in an Organized Health Care Education/Training Program1598567430
Verify Melissa Willitzer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Oregon board licenses this profession
Search for license 184240Check 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 physician assistant in 2024
151 Medicare Part D claims for 111 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. 18 claims were for opioids.
Most prescribed
- Cephalexin15 claims
- Famotidine15 claims
- Ondansetron Odt12 claims
- Amoxicillin-Clavulanate Potass11 claims
- Oxycodone Hcl11 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 MIPS final score for 2023 (Medicare payment program): 97.8 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Melissa Willitzer among 2,094 physician assistant records in Oregon
Melissa Willitzer, 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 updated2025 · 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
- Emad Aboujaoude, PAPortland, OR 972391982619490
- Alan Albright, PA-CPortland, OR 972391669578845
- Kara Berent, PA-CPortland, OR 972391376564203
- Victoria Brownlow, PAPortland, OR 972391457366940
- James Ghormley, PA-CPortland, OR 972391497785075
- Terry Glickman, PAPortland, OR 972391295837821
- Laura Hanks, PA-C, ASSISTANT PROFPortland, OR 972391609881127
- Kenneth Ingram, PAPortland, OR 972391083620686
Common questions
What is Melissa Willitzer, PA-C's NPI number?
Melissa Willitzer, PA-C's National Provider Identifier (NPI) is 1447607577, issued on May 18, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Melissa Willitzer, PA-C located?
The NPPES record lists a practice address at 3181 SW Sam Jackson Park RD, Portland, OR, 97239. Phone: (503) 494-7500. Providers update this record themselves, so call before visiting.
How can I verify Melissa Willitzer, PA-C's license?
NPPES lists Oregon license number 184240, as entered by the provider. Search the Oregon board that licenses this profession; the NPPES record confirms identity only.
How much does Melissa Willitzer, PA-C prescribe under Medicare Part D?
In 2024, Melissa Willitzer, PA-C had 151 Medicare Part D claims for 111 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
What is Melissa Willitzer, PA-C's MIPS final score?
The 2023 MIPS final score is 97.8 of 100. 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.