Stacey Ann Williamson , PA-C
Physician Assistant โข Tigard, OR
12442 Sw Scholls Ferry Rd Ste 100
Tigard, OR 972230803
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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Stacey Williamson is listed in NPPES under Physician Assistant.
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NPI assigned on August 24, 2010; this date does not establish years in practice.
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Published CMS data list 676 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 99214 โ Established patient outpatient office visit: 212 service units.
- 82962 โ Blood glucose (sugar) test performed by hand-held instrument: 194 service units.
- 83036 โ Hemoglobin a1c level: 174 service units.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPTยฎ only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See all 6 records in the table ยท Guide: How to read Medicare Part B data
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Published CMS data list 1,556 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Ozempic (Semaglutide) โ 207 prescription fills, including refills.
- Mounjaro (Tirzepatide) โ 135 prescription fills, including refills.
- Lantus Solostar (Insulin Glargine,hum.Rec.Anlog) โ 74 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 41 records in the table ยท Guide: How to read Medicare Part D prescriber data
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More Medicare Part B services than 80% of clinicians listed under Physician Assistant in Tigard, OR (2024, 33 clinicians with data). Median for this group: 268. Middle half: 112 to 611.
More Medicare Part B services than 80% of clinicians listed under Physician Assistant in Oregon (2024, 1,144 clinicians with data). Median for this group: 218. Middle half: 98 to 498.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 202 in 2020 to 676 in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2020โ2024.
Practice Location & Contact Primary Location
12442 Sw Scholls Ferry Rd Ste 100
Tigard, OR 972230803
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
NPPES lists 3 distinct additional practice-address records in Edwardsville, IL; Portland, OR; Saint Louis, MO. See the list
Source: CMS NPPES NPI Registry, practice location records; release date unavailable.
CMS Doctors and Clinicians lists 1 group name: Fairview Heights Medical Group Sc. See the list
Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
2010
What Public CMS Data Show
Physician Assistant: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
172 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider, 2024.
Medicare-allowed amount
About $27,190 in 2024
The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024.
Paid by Medicare
About $19,753 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024.
30-day fills
3,200 standardized 30-day fills in 2024
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$1,087,186 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024.
Open Payments general payments, program year 2025
All general payments: $406.20 across 22 records.
By nature of payment
- Food and Beverage: $406.20 across 22 records.
Reporting-company totals (3 largest of 16)
- Eli Lilly and Company: $54.43 across 2 records.
- Medtronic, Inc.: $52.32 across 2 records.
- Xeris Pharmaceuticals, Inc.: $35.71 across 2 records.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).
Years since graduation
16 years (graduated 2010)
CMS Doctors and Clinicians data list 2010 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File.
NPI first issued
2010
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Accepts Medicare assignment
CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, โDoes your provider accept Medicare as full payment?โ
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Stacey Williamson has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Stacey Williamson as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Tigard and Oregon
Billing and prescribing volume is not a quality rating.
Medicare Part B services
More Medicare Part B services than 80% of clinicians listed under Physician Assistant in Tigard, OR (2024, 33 clinicians with data). Median for this group: 268. Middle half: 112 to 611.
More Medicare Part B services than 80% of clinicians listed under Physician Assistant in Oregon (2024, 1,144 clinicians with data). Median for this group: 218. Middle half: 98 to 498.
Medicare-allowed amount
A higher Medicare-allowed amount than 70% of clinicians listed under Physician Assistant in Tigard, OR (2024, 33 clinicians with data). Median for this group: $19,790. Middle half: $10,399 to $27,529.
A higher Medicare-allowed amount than 65% of clinicians listed under Physician Assistant in Oregon (2024, 1,144 clinicians with data). Median for this group: $15,959. Middle half: $7,110 to $33,008.
Paid by Medicare
A higher Medicare payment amount than 65% of clinicians listed under Physician Assistant in Tigard, OR (2024, 33 clinicians with data). Median for this group: $12,491. Middle half: $6,992 to $20,595.
A higher Medicare payment amount than 65% of clinicians listed under Physician Assistant in Oregon (2024, 1,144 clinicians with data). Median for this group: $11,156. Middle half: $5,029 to $23,443.
Medicare Part D prescriptions
More Part D prescriptions than 90% of clinicians listed under Physician Assistant in Tigard, OR (2024, 37 clinicians with data). Median for this group: 257. Middle half: 89 to 755.
More Part D prescriptions than 80% of clinicians listed under Physician Assistant in Oregon (2024, 1,336 clinicians with data). Median for this group: 340. Middle half: 96 to 1,131.
Part D drug cost
A higher Part D drug cost than 95% of clinicians listed under Physician Assistant in Tigard, OR (2024, 37 clinicians with data). Median for this group: $5,673. Middle half: $1,222 to $35,701.
A higher Part D drug cost than 95% of clinicians listed under Physician Assistant in Oregon (2024, 1,336 clinicians with data). Median for this group: $8,538. Middle half: $984 to $101,656.
50 active clinicians are listed under Physician Assistant with a practice address in Tigard, OR (2,095 in Oregon).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Tigard
26% of these 50 clinicians have the CMS telehealth indicator.
72% of these 50 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services increased 235% from 202 in 2020 to 676 in 2024.
- 2020: 202
- 2021: 442
- 2022: 1,259
- 2023: 771
- 2024: 676
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Medicare-allowed amount
Medicare-allowed amount increased 77% from $15,351 in 2020 to $27,190 in 2024.
- 2020: $15,351
- 2021: $23,037
- 2022: $51,638
- 2023: $31,360
- 2024: $27,190
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Paid by Medicare
Paid by Medicare increased 62% from $12,216 in 2020 to $19,753 in 2024.
- 2020: $12,216
- 2021: $17,045
- 2022: $37,378
- 2023: $21,946
- 2024: $19,753
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 27% from 1,223 in 2020 to 1,556 in 2024.
- 2020: 1,223
- 2021: 1,400
- 2022: 1,799
- 2023: 1,831
- 2024: 1,556
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30-day fills
30-day fills increased 25% from 2,568 in 2020 to 3,200 in 2024.
- 2020: 2,568
- 2021: 3,065
- 2022: 3,710
- 2023: 3,749
- 2024: 3,200
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Part D drug cost
Part D drug cost increased 183% from $383,846 in 2020 to $1,087,186 in 2024.
- 2020: $383,846
- 2021: $517,582
- 2022: $1,316,543
- 2023: $1,474,069
- 2024: $1,087,186
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $223.39 in 2021 to $406.20 in 2025.
- 2021: $223.39
- 2022: $1,144.91
- 2023: $976.32
- 2024: $1,064.95
- 2025: $406.20
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo ยท Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2025 (payments made January 1 โ December 31, 2025): 22 records totaling $406.20.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Eli Lilly and Company |
Food and Beverage
In-kind items and services
|
JARDIANCE | General | $34.13 |
| Medtronic, Inc. |
Food and Beverage
In-kind items and services
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MINIMED 780G | General | $31.02 |
| Novo Nordisk Inc |
Food and Beverage
In-kind items and services
|
Ozempic | General | $23.35 |
| Corcept Therapeutics |
Food and Beverage
In-kind items and services
|
Korlym | General | $21.73 |
| Medtronic, Inc. |
Food and Beverage
In-kind items and services
|
INCEPTIV | General | $21.30 |
| Eli Lilly and Company |
Food and Beverage
In-kind items and services
|
MOUNJARO | General | $20.30 |
| BETA BIONICS, INC. |
Food and Beverage
In-kind items and services
|
iLet Bionic Pancreas | General | $19.88 |
| Xeris Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
|
RECORLEV | General | $19.82 |
| Amgen Inc. |
Food and Beverage
In-kind items and services
|
UPLIZNA | General | $19.60 |
| Antares Pharma, Inc. |
Food and Beverage
In-kind items and services
|
XYOSTED | General | $19.14 |
| ARGENX US, INC. |
Food and Beverage
In-kind items and services
|
VYVGART | General | $18.65 |
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
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FARXIGA | General | $18.59 |
| Novartis Pharmaceuticals Corporation |
Food and Beverage
In-kind items and services
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LEQVIO | General | $18.29 |
| Mannkind Corporation |
Food and Beverage
In-kind items and services
|
AFREZZA | General | $18.17 |
| Boehringer Ingelheim Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
|
JARDIANCE | General | $17.82 |
| Dexcom, Inc. |
Food and Beverage
In-kind items and services
|
Dexcom G6 Transmitter | General | $16.84 |
| Neurelis, Inc. |
Food and Beverage
In-kind items and services
|
VALTOCO | General | $16.48 |
| Xeris Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
|
RECORLEV | General | $15.89 |
| Amgen Inc. |
Food and Beverage
In-kind items and services
|
EVENITY | General | $15.43 |
| Sequel Med Tech, LLC |
Food and Beverage
In-kind items and services
|
TWIIST | General | $14.76 |
| BETA BIONICS, INC. |
Food and Beverage
In-kind items and services
|
iLet Bionic Pancreas | General | $3.36 |
| BETA BIONICS, INC. |
Food and Beverage
In-kind items and services
|
iLet Bionic Pancreas | General | $1.65 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Performed Procedures & Service Volume
CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016โ2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners โ by Provider and Service data, 2017โ2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
|
99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
|
212 | 162 | $229.58 | $103.29 |
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82962
Blood glucose (sugar) test performed by hand-held instrument
|
194 | 146 | $14.00 | $3.20 |
|
83036
Hemoglobin a1c level
|
174 | 132 | $40.00 | $9.49 |
|
95251
Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report
|
68 | 53 | $97.00 | $28.24 |
|
80061
Blood test, lipids (cholesterol and triglycerides)
|
16 | 16 | $68.00 | $13.12 |
|
99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
|
12 | 12 | $187.00 | $74.21 |
Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Ozempic | Semaglutide | 207 | 10,110 | $338,128.41 | 77 |
| Mounjaro | Tirzepatide | 135 | 4,956 | $186,441.56 | 47 |
| Lantus Solostar | Insulin Glargine,hum.Rec.Anlog | 74 | 5,208 | $11,341.21 | 38 |
| Farxiga | Dapagliflozin Propanediol | 62 | 3,890 | $71,447.10 | 25 |
| Atorvastatin Calcium | Atorvastatin Calcium | 60 | 4,740 | $315.40 | 27 |
| Metformin Hcl | Metformin Hcl | 60 | 5,040 | $473.76 | 33 |
| Levothyroxine Sodium | Levothyroxine Sodium | 59 | 4,590 | $645.08 | 26 |
| Glimepiride | Glimepiride | 50 | 3,660 | $284.49 | 23 |
| Omnipod 5 Dexg7g6 Pods (Gen 5) | Insulin Pump Cart,auto,bt,g6/7 | 50 | 2,340 | $49,075.32 | 15 |
| Humalog Kwikpen U-100 | Insulin Lispro | 48 | 2,729 | $13,403.40 | 20 |
| Ultra-Fine Short Pen Needle | Pen Needle, Diabetic | 46 | 3,307 | $3,911.44 | 21 |
| Novolog Flexpen | Insulin Aspart | 39 | 2,261 | $9,027.20 | 17 |
| Metformin Hcl Er | Metformin Hcl | 36 | 2,820 | $652.35 | 21 |
| Jardiance | Empagliflozin | 34 | 2,600 | $50,703.23 | 20 |
| Methimazole | Methimazole | 33 | 2,382 | $318.61 | 12 |
| Trulicity | Dulaglutide | 32 | 1,232 | $42,141.58 | 16 |
| Nano 2nd Gen Pen Needle | Pen Needle, Diabetic | 31 | 2,055 | $3,526.03 | 18 |
| Glipizide | Glipizide | 30 | 2,340 | $249.18 | 14 |
| Insulin Lispro Kwikpen U-100 | Insulin Lispro | 29 | 1,316 | $6,971.44 | 12 |
| Lisinopril | Lisinopril | 26 | 2,280 | $96.49 | โ |
| Insulin Lispro | Insulin Lispro | 26 | 931 | $1,881.56 | โ |
| Rybelsus | Semaglutide | 26 | 1,320 | $39,962.12 | โ |
| Tresiba Flextouch U-200 | Insulin Degludec | 25 | 1,769 | $24,682.06 | 15 |
| Glipizide Er | Glipizide | 24 | 1,541 | $416.37 | โ |
| Novolog | Insulin Aspart | 23 | 1,184 | $6,591.98 | โ |
(top 25 shown)
Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2021-07-06NUCC Taxonomy Code: 363A00000X
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.
NUCC Taxonomy Code: 363A00000X
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.
NUCC Taxonomy Code: 363A00000X
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - PHYSICIAN ASSISTANT
I20210722001154
MO
5698960763
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Medicare Group Practice Enrollments
Source: CMS Doctors and Clinicians National Downloadable File
Fairview Heights Medical Group Sc
11155 Dunn Rd, Saint Louis, MO 631366148
Phone: 3149538799
Secondary Practice Locations
11155 Dunn Rd Ste 109n
Saint Louis, MO 631366148
Phone: 3149538799
2122 Troy Rd Ste 130
Edwardsville, IL 620252540
Phone: 6186929876
9155 Sw Barnes Rd Ste 638
Portland, OR 972256633
Phone: 5032167000
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Internal Medicine
Doctor of Osteopathic Medicine (D.O.)
Nurse Practitioner - Adult Health
Internal Medicine
Doctor of Osteopathic Medicine (D.O.)
Physician Assistant
Physician Assistant (Certified)
Nurse Practitioner - Adult Health
Adult Nurse Practitioner
Physician Assistant
Physician Assistant (Certified)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 12442 SW SCHOLLS FERRY RD STE 100, TIGARD, OR 972230803 (Tel: 5032169200)
Registered at PO BOX 3158, PORTLAND, OR 972083158
Physician Assistant (license number reported to NPPES: OR PA178932)
NPI status registered as active in NPPES database
Registered at 1303 DANTIGNAC ST, SUITE 1200, AUGUSTA, GA 309012775 (Tel: 7067747760)
Registered at PO BOX 1705, AUGUSTA, GA 309031705 (Tel: 7067747263)
Recorded as STACEY WILLIAMSON, PA-C
Physician Assistant
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Physician Assistants in Tigard
- Caroline Meighan, PA-C
- Michael Cunningham, PA-C
- Sarah Reed, PA-C
- Linh Nguyen, PA-C
- Melody Flannery, PA-C
- Kayla Moody, PA
Mailing Address
Po Box 3158
Portland, OR 972083158