Stacy A. Willis, PA-C
Physician Assistant · Denver, CO
Stacy A. Willis, PA-C is a physician assistant with a practice address in Denver, Colorado, and NPI 1740418110, issued on Jun 24, 2009. Check the license (Colorado 0004027, as entered in NPPES) with the Colorado board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Stacy A. Willis
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License numbers
- 0004027 CO
PA001171 ME
TL529 WY
Self-reported in NPPES; status is on the state search - Practice location
- 1375 E 20TH Ave, Denver, CO 80205
- Phone
- (303) 338-4545
- Enumerated
- Jun 24, 2009
- Record last updated
- Jun 21, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid ID
- 55381031 CO
- Medicare enrollment
- Enrolled (PECOS I20141126001134); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 3,767 in Colorado → Look up another NPI →
Also registered at 1375 E 20TH Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jennifer Allen-Thomas, REGISTERED NURSERegistered Nurse1841327814
- Mana Amir, MDPulmonary Disease Physician1598731994
- Barbara Anderson, NPNurse Practitioner1962617076
- Sheri AndrusRegistered Nurse1750418638
- Sharisse Arnold Rehring, M.D.Pediatrics Physician1083741045
- Tyler Ashford, RNRegistered Nurse1568903383
Verify Stacy A. Willis in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Colorado board licenses this profession
Search for license 0004027Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
10% fewer Medicare Part D claims than the average physician assistant in 2024
745 Medicare Part D claims for 419 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D.
Most prescribed
- Fluorouracil155 claims
- Clobetasol Propionate112 claims
- Triamcinolone Acetonide70 claims
- Ketoconazole69 claims
- Retin-A28 claims
- Metronidazole23 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
- Colorado Permanente Medical Group PCDenver, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Stacy A. Willis among 3,767 physician assistant records in Colorado
Stacy A. Willis, PA-C is one of 3,767 physician assistant records with a practice address in Colorado. 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 2009, is newer than 28% of them.
- NPI issued2009 · 28% of these records are older, 69% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2009 · median 2017 among the 2,351 with a school on file
- Record last updated2021 · 40% 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 Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
540 physician assistant records list a practice address in Denver
They are 540 of the 25,068 NPPES records with a practice address in Denver, and 3,767 physician assistant records in Colorado.
All 3,767 in Colorado → Every provider in Denver → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Kim Anderson, PA-CDenver, CO 802051760525216
- Rebecca Beitler-WalshDenver, CO 802051427116920
- Stuart Bruckman, PA-CDenver, CO 802051861411290
- Samantha Cook, PADenver, CO 802051730294612
- Alison Covak, PADenver, CO 802051609927672
- William Gascoyne, P.A.Denver, CO 802051558396416
- Digby Kirby, PA-CDenver, CO 802051780728493
- Kara Lauer, PADenver, CO 802051255362786
Common questions
What is Stacy A. Willis, PA-C's NPI number?
Stacy A. Willis, PA-C's National Provider Identifier (NPI) is 1740418110, issued on Jun 24, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Stacy A. Willis, PA-C located?
The NPPES record lists a practice address at 1375 E 20TH Ave, Denver, CO, 80205. Phone: (303) 338-4545. Providers update this record themselves, so call before visiting.
How can I verify Stacy A. Willis, PA-C's license?
NPPES lists Colorado license number 0004027, as entered by the provider. Search the Colorado board that licenses this profession; the NPPES record confirms identity only.
How much does Stacy A. Willis, PA-C prescribe under Medicare Part D?
In 2024, Stacy A. Willis, PA-C had 745 Medicare Part D claims for 419 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.