Quick answers
- Does Sajjan K. Nemani accept Medicare assignment?
- Yes. Medicare's clinician data says Sajjan K. Nemani 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 Sajjan K. Nemani see?
- In 2024, CMS data shows 491 Original Medicare patients and 831 services for Sajjan K. Nemani. This counts Original Medicare only and measures volume, not quality.
- What is Sajjan K. Nemani's NPI number?
- 1649220542. 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 Sajjan K. Nemani, 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 | 491 |
|---|---|
| Services billed to Medicare | 831 |
| Different services or procedures | 28 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)163 services
- Needle measurement of electrical activity in arm or leg muscles, complete study (95886)132 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)61 services
- Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)57 services
- New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)49 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%
- Arthritis58%
- Diabetes38%
- Anxiety38%
- Ischemic heart disease30%
Hospitals where Sajjan K. Nemani works
Medicare's Facility Affiliation Data lists Sajjan K. Nemani 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.
- Anderson HospitalMaryville, IL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 140289
- Barnes Jewish HospitalSaint Louis, MO · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 260032
- Community Hospital of StauntonStaunton, IL · Critical Access Hospital · Emergency services: listed by Medicare · CCN 141306
- Good Samaritan Regional Health CenterMount Vernon, IL · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 140046
- SSM Health St Mary's Hospital -CentraliaCentralia, IL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 140034
Practice locations
Addresses where Sajjan K. Nemani is enrolled with Medicare (CMS data updated October 2, 2026).
- 1 Good Samaritan WayMount Vernon, IL 62864 (557) 203‑1601
- 400 N Pleasant AveCentralia, IL 62801 (618) 436‑8000
- 6828 State Route 162, Suite 2Maryville, IL 62062 (618) 288‑5906
Group practices
Medicare enrollment lists Sajjan K. Nemani as a member of these groups (CMS data updated October 2, 2026).
- Good Samaritan Regional Health Center156 clinicians in the group
- Anderson Medical Group LLC136 clinicians in the group
- St Marys Hospital Centralia Illinois114 clinicians in the group
Specialties
- Neurologyprimary
Other neurologists in Illinois
Clinicians with the same Medicare primary specialty in Illinois — not a recommendation.
Other clinicians in Good Samaritan Regional Health Center
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | New York Medical College |
| Graduation year | 1976 (50 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1649220542 |
| 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