Quick answers
- Does Isaac A. Roberg accept Medicare assignment?
- Yes. Medicare's clinician data says Isaac A. Roberg 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 Isaac A. Roberg see?
- In 2024, CMS data shows 349 Original Medicare patients and 18,228 services for Isaac A. Roberg. This counts Original Medicare only and measures volume, not quality.
- What is Isaac A. Roberg's NPI number?
- 1447297676. 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 Isaac A. Roberg, 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 | 349 |
|---|---|
| Services billed to Medicare | 18,228 |
| Different services or procedures | 43 |
| Participating Medicare provider | Yes |
| Average age of these patients | 70 |
Most frequent services
- Injection, onabotulinumtoxina, 1 unit (J0585)15,801 services
- Injection, triamcinolone acetonide, not otherwise specified, 10 mg (J3301)898 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)138 services
- Telephone medical discussion with physician, 11-20 minutes (99442)137 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)118 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 blood pressure75%
- High cholesterol75%
- Arthritis75%
- Anxiety46%
- Diabetes40%
- Depression37%
Hospitals where Isaac A. Roberg works
Medicare's Facility Affiliation Data lists Isaac A. Roberg 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.
- Harrisburg Medical CenterHarrisburg, IL · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 140210
- Herrin HospitalHerrin, IL · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 140011
- Memorial Hospital of CarbondaleCarbondale, IL · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 140164
- St Joseph Memorial HospitalMurphysboro, IL · Critical Access Hospital · Emergency services: listed by Medicare · CCN 141334
Practice locations
Addresses where Isaac A. Roberg is enrolled with Medicare (CMS data updated October 2, 2026).
- 1390 Hope DrCarbondale, IL 62901 (315) 351‑4972
- 201 S 14th StHerrin, IL 62948 (618) 942‑2171
- 2601 W Main StCarbondale, IL 62901 (618) 549‑5361
Group practices
Medicare enrollment lists Isaac A. Roberg as a member of this group (CMS data updated October 2, 2026).
- Southern Illinois Medical Services NFP334 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Carbondale
Clinicians with the same Medicare primary specialty in Carbondale, IL — not a recommendation.
Other clinicians in Southern Illinois Medical Services NFP
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 2004 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1447297676 |
| 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