Siobhan Proksell, MD
NPI 1184990079 · Gastroenterology Physician · Aurora, CO
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Siobhan Proksell, MD is a Gastroenterology Physician provider in Aurora, CO (NPI 1184990079).
Provider details
- NPI number
- 1184990079
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- ME147737 (FL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
14 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
295 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 119 | $98 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 41 | $17 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 39 | $83 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 33 | $67 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 26 | $136 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 10 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ustekinumabbrand: Stelara | 55 | — |
| Ringer'S Solution,lactatedbrand: Lactated Ringers | 44 | — |
| Diphenoxylate Hcl/Atropinebrand: Diphenoxylate-Atropine | 34 | — |
| Upadacitinibbrand: Rinvoq | 32 | — |
| Risankizumab-Rzaabrand: Skyrizi On-Body | 24 | — |
| Omeprazole | 17 | — |
| Peg3350/Sod Sulf,bicarb,cl/Kcl |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$373 across 9 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2012-03-26
- Last updated
- 2025-07-10
- Certified
- 2025-07-10
Frequently asked questions
- What is Siobhan Proksell's NPI number?
- Siobhan Proksell's National Provider Identifier (NPI) is 1184990079, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Siobhan Proksell's specialty?
- Siobhan Proksell is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Siobhan Proksell located?
- Siobhan Proksell's practice location on file with NPPES is 1635 Aurora Ct, Aurora, CO 80045-2541.
- What is Siobhan Proksell's phone number?
- The practice phone number listed in the NPPES registry for Siobhan Proksell is (720) 848-0000.
- Does Siobhan Proksell accept Medicare?
- Siobhan Proksell is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Siobhan Proksell's NPI active?
- Yes — Siobhan Proksell's NPI (1184990079) is active in the NPPES registry as of the last update on 2025-07-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.