Erin Lareau, M.D.
NPI 1871779728 · Emergency Medicine Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Erin Lareau, M.D. is a Emergency Medicine Physician provider in Chicago, IL (NPI 1871779728).
Provider details
- NPI number
- 1871779728
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 036118769 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
18 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
342 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) |
|---|---|---|
| Emergency Department Visit With High Level of Medical Decision Making99285 | 195 | $191 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 81 | $131 |
| Critical Care, First 30-74 Minutes99291 | 38 | $230 |
| Emergency Department Visit With Low Level of Medical Decision Making99283 | 15 | $78 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 13 | $184 |
Typical Medicare-allowed amounts for these services range $78–$230 (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
- 2008-01-10
- Last updated
- 2019-11-12
Frequently asked questions
- What is Erin Lareau's NPI number?
- Erin Lareau's National Provider Identifier (NPI) is 1871779728, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Erin Lareau's specialty?
- Erin Lareau is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Erin Lareau located?
- Erin Lareau's practice location on file with NPPES is 211 E Ontario St Ste 200, Chicago, IL 60611-3284.
- What is Erin Lareau's phone number?
- The practice phone number listed in the NPPES registry for Erin Lareau is (312) 694-7000.
- Does Erin Lareau accept Medicare?
- Erin Lareau is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Erin Lareau's NPI active?
- Yes — Erin Lareau's NPI (1871779728) is active in the NPPES registry as of the last update on 2019-11-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.