Quick answers
- Does Allison S. Marquis accept Medicare assignment?
- Yes. Medicare's clinician data says Allison S. Marquis accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Allison S. Marquis see?
- In 2024, CMS data shows 313 Original Medicare patients and 3,118 services for Allison S. Marquis. This counts Original Medicare only and measures volume, not quality.
- What is Allison S. Marquis's NPI number?
- 1124664248. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Allison S. Marquis, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 313 |
|---|---|
| Services billed to Medicare | 3,118 |
| Different services or procedures | 31 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Destruction of precancer skin growth, 2-14 growths (17003)555 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)231 services
- Destruction of skin growth, 1-14 growths (17110)182 services
- Destruction of precancer skin growth, 1 growth (17000)174 services
- Biopsy of related skin growth, first growth (11102)103 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High cholesterol75%
- High blood pressure57%
- Arthritis43%
- Ischemic heart disease19%
- Anxiety19%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)15%
Practice locations
Addresses where Allison S. Marquis is enrolled with Medicare (CMS data updated October 2, 2026).
- 4350 Limelight Ave, Suite 205Castle Rock, CO 80109 (720) 686‑7546
Group practices
Medicare enrollment lists Allison S. Marquis as a member of this group (CMS data updated October 2, 2026).
- Clarity Dermatology PLLC12 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Castle Rock
Clinicians with the same Medicare primary specialty in Castle Rock, CO — not a recommendation.
Other clinicians in Clarity Dermatology PLLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 2018 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1124664248 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians