Quick answers
- Does Chelsea L. Thomas accept Medicare assignment?
- Yes. Medicare's clinician data says Chelsea L. Thomas 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 Chelsea L. Thomas see?
- In 2024, CMS data shows 533 Original Medicare patients and 4,614 services for Chelsea L. Thomas. This counts Original Medicare only and measures volume, not quality.
- What is Chelsea L. Thomas's NPI number?
- 1164860672. 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 Chelsea L. Thomas, 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 | 533 |
|---|---|
| Services billed to Medicare | 4,614 |
| Different services or procedures | 67 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Injection, triamcinolone acetonide, not otherwise specified, 10 mg (J3301)1,798 services
- Hyaluronan or derivative, trivisc, for intra-articular injection, 1 mg (J7329)1,050 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)284 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)256 services
- Aspiration and/or injection of fluid from large joint (20610)218 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%
- High blood pressure73%
- Arthritis73%
- Anxiety28%
- Ischemic heart disease25%
- Chronic kidney disease24%
Hospitals where Chelsea L. Thomas works
Medicare's Facility Affiliation Data lists Chelsea L. Thomas 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.
- Advocate Sherman HospitalElgin, IL · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 140030
- Northwestern Medicine McHenryMcHenry, IL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 140116
Practice locations
Addresses where Chelsea L. Thomas is enrolled with Medicare (CMS data updated October 2, 2026).
- 1550 N Randall RdElgin, IL 60123 (815) 398‑9491
- 6226 Northwest HwyCrystal Lake, IL 60014 (815) 398‑9491
- 650 S Randall RdAlgonquin, IL 60102 (815) 381‑7431
- 770 Beloit RdBelvidere, IL 61008 (815) 398‑9491
Group practices
Medicare enrollment lists Chelsea L. Thomas as a member of this group (CMS data updated October 2, 2026).
- Orthomidwest, PLLC547 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Elgin
Clinicians with the same Medicare primary specialty in Elgin, IL — not a recommendation.
Other clinicians in Orthomidwest, PLLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| School | Rush Medical College Of Rush University |
|---|---|
| Graduation year | 2013 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1164860672 |
| 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