Quick answers
- Does Erica J. Twarling accept Medicare assignment?
- Yes. Medicare's clinician data says Erica J. Twarling 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 Erica J. Twarling see?
- In 2024, CMS data shows 356 Original Medicare patients and 1,309 services for Erica J. Twarling. This counts Original Medicare only and measures volume, not quality.
- What is Erica J. Twarling's NPI number?
- 1033173356. 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 Erica J. Twarling, 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 | 356 |
|---|---|
| Services billed to Medicare | 1,309 |
| Different services or procedures | 35 |
| Participating Medicare provider | Yes |
| Average age of these patients | 77 |
Most frequent services
- Aspiration and/or injection of fluid from large joint (20610)276 services
- Hyaluronan or derivative, euflexxa, for intra-articular injection, per dose (J7323)213 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)174 services
- Injection, triamcinolone acetonide, not otherwise specified, 10 mg (J3301)170 services
- Replacement of knee joint, both sides of knee (27447)68 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%
- Arthritis75%
- High blood pressure69%
- Osteoporosis24%
- Ischemic heart disease21%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)21%
Hospitals where Erica J. Twarling works
Medicare's Facility Affiliation Data lists Erica J. Twarling at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Northshore University Healthsystem - Evanston HospitalEvanston, IL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 140010
Practice locations
Addresses where Erica J. Twarling is enrolled with Medicare (CMS data updated October 2, 2026).
- 2101 Waukegan RdBannockburn, IL 60015
- 2401 Ravine WayGlenview, IL 60025
- 521 Green Bay RdWilmette, IL 60091 (847) 996‑5680
- 521 Green Bay Rd, Suite 100Wilmette, IL 60091 (847) 832‑1460
- 9600 Gross Point RdSkokie, IL 60076 (847) 677‑9600
Group practices
Medicare enrollment lists Erica J. Twarling as a member of this group (CMS data updated October 2, 2026).
- Illinois Bone and Joint Institute, LLC604 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Bannockburn
Clinicians with the same Medicare primary specialty in Bannockburn, IL — not a recommendation.
Other clinicians in Illinois Bone and Joint Institute, LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 2003 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1033173356 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- 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