Erin Lark
NPI 1871983288 · Family Nurse Practitioner · Chicago, IL
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Erin Lark is a Family Nurse Practitioner provider in Chicago, IL (NPI 1871983288).
Provider details
- NPI number
- 1871983288
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Female
- Sole proprietor
- No
- License
- 209-012493 (IL)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
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
11 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
103 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 | 61 | $148 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 27 | $101 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 15 | $7 |
Typical Medicare-allowed amounts for these services range $7–$148 (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
Additional practice locations (1)
- 601 John St Ste M-352Kalamazoo, MI 49007-5341Phone: (269) 641-7140
Registry dates
- Enumerated
- 2015-01-23
- Last updated
- 2026-01-02
- Certified
- 2026-01-02
Frequently asked questions
- What is Erin Lark's NPI number?
- Erin Lark's National Provider Identifier (NPI) is 1871983288, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Erin Lark's specialty?
- Erin Lark is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Erin Lark located?
- Erin Lark's practice location on file with NPPES is 840 W Irving Park Rd, Chicago, IL 60613-3011.
- What is Erin Lark's phone number?
- The practice phone number listed in the NPPES registry for Erin Lark is (872) 206-2813.
- Does Erin Lark accept Medicare?
- Erin Lark is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Erin Lark's NPI active?
- Yes — Erin Lark's NPI (1871983288) is active in the NPPES registry as of the last update on 2026-01-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.