Elle O'Brien
NPI 1881348092 · Physician Assistant · Chicago, IL
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Elle O'Brien is a Physician Assistant provider in Chicago, IL (NPI 1881348092).
Provider details
- NPI number
- 1881348092
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Female
- Sole proprietor
- No
- License
- 085-008813 (IL)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
4 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
62 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 39 | $104 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 23 | $127 |
Typical Medicare-allowed amounts for these services range $104–$127 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Registry dates
- Enumerated
- 2022-02-07
- Last updated
- 2025-04-29
- Certified
- 2025-04-29
Frequently asked questions
- What is Elle O'Brien's NPI number?
- Elle O'Brien's National Provider Identifier (NPI) is 1881348092, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Elle O'Brien's specialty?
- Elle O'Brien is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Elle O'Brien located?
- Elle O'Brien's practice location on file with NPPES is 1725 W Harrison St Ste 1010, Chicago, IL 60612-3845.
- What is Elle O'Brien's phone number?
- The practice phone number listed in the NPPES registry for Elle O'Brien is (312) 226-2371.
- Does Elle O'Brien accept Medicare?
- Elle O'Brien is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Elle O'Brien's NPI active?
- Yes — Elle O'Brien's NPI (1881348092) is active in the NPPES registry as of the last update on 2025-04-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.