Stacey Ann Williamson, PA-C
Physician Assistant · Tigard, OR
Stacey Ann Williamson, PA-C is a physician assistant with a practice address in Tigard, Oregon, and NPI 1457667891, issued on Aug 24, 2010. Check the license (Oregon PA178932, as entered in NPPES) with the Oregon board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Stacey Ann Williamson
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License numbers
- PA178932 OR
085008245 IL
2020025684 MO
Self-reported in NPPES; status is on the state search - Practice location
- 12442 SW Scholls Ferry RD Ste 100, Tigard, OR 97223
- Phone
- (503) 216-9200
- Enumerated
- Aug 24, 2010
- Record last updated
- Jul 6, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20210722001154); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 2,094 in Oregon → Look up another NPI →
Also registered at 12442 SW Scholls Ferry RD Ste 100
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Martha Geisheker, ANPAdult Health Nurse Practitioner1194800961
- Lauren Gorence, PA-CPhysician Assistant1831482744
- Emily Jacobson, PHDClinical Psychologist1578915377
Verify Stacey Ann Williamson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Oregon board licenses this profession
Search for license PA178932Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.2 times the Medicare Part D claims of the average physician assistant in 2024
1,829 Medicare Part D claims for 428 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 59% of claims.
Most prescribed
- Ozempic207 claims
- Mounjaro135 claims
- Lantus Solostar74 claims
- Farxiga62 claims
- Atorvastatin Calcium60 claims
- Metformin Hcl60 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: $979.17
47 payments; by number, the most common kind was food and beverage; the largest payer was Novo Nordisk Inc. 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.
Bills Medicare through one group practice
- Fairview Heights Medical Group SCSaint Louis, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Stacey Ann Williamson among 2,094 physician assistant records in Oregon
Stacey Ann Williamson, 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 2010, is newer than 27% of them.
- NPI issued2010 · 27% of these records are older, 69% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated2010 · median 2017 among the 1,552 with a school on file
- Record last updated2021 · 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).
50 physician assistant records list a practice address in Tigard
They are 50 of the 3,081 NPPES records with a practice address in Tigard, and 2,094 physician assistant records in Oregon.
All 2,094 in Oregon → Every provider in Tigard → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Angela Black, PATigard, OR 972231710063110
- Michael Cunningham, PA-CTigard, OR 972231154517175
- Melody Flannery, PA-CTigard, OR 972231730521311
- Sarah Fritz, PA-CTigard, OR 972231750464541
- Lauren Gorence, PA-CTigard, OR 972231831482744
- Kyle Markwell, PA-CTigard, OR 972231891123592
- Alexandra McMenamin, PA-CTigard, OR 972231356426407
- Jeffrey Melnick, PATigard, OR 972231245273374
Common questions
What is Stacey Ann Williamson, PA-C's NPI number?
Stacey Ann Williamson, PA-C's National Provider Identifier (NPI) is 1457667891, issued on Aug 24, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Stacey Ann Williamson, PA-C located?
The NPPES record lists a practice address at 12442 SW Scholls Ferry RD Ste 100, Tigard, OR, 97223. Phone: (503) 216-9200. Providers update this record themselves, so call before visiting.
How can I verify Stacey Ann Williamson, PA-C's license?
NPPES lists Oregon license number PA178932, as entered by the provider. Search the Oregon board that licenses this profession; the NPPES record confirms identity only.
How much does Stacey Ann Williamson, PA-C prescribe under Medicare Part D?
In 2024, Stacey Ann Williamson, PA-C had 1,829 Medicare Part D claims for 428 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.