Quick answers
- Does Sidney J. Hanish accept Medicare assignment?
- Yes. Medicare's clinician data says Sidney J. Hanish 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 Sidney J. Hanish see?
- In 2024, CMS data shows 1,598 Original Medicare patients and 4,436 services for Sidney J. Hanish. This counts Original Medicare only and measures volume, not quality.
- What is Sidney J. Hanish's NPI number?
- 1568523199. 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 Sidney J. Hanish, 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 | 1,598 |
|---|---|
| Services billed to Medicare | 4,436 |
| Different services or procedures | 25 |
| Participating Medicare provider | Yes |
| Average age of these patients | 79 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)1,155 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)362 services
- Imaging of retina (92134)348 services
- Exam of visual field with extended testing (92083)299 services
- Imaging of optic nerve (92133)289 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%
- Arthritis51%
- Diabetes32%
- Ischemic heart disease30%
- Chronic kidney disease26%
Hospitals where Sidney J. Hanish works
Medicare's Facility Affiliation Data lists Sidney J. Hanish 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.
- Alton Memorial HospitalAlton, IL · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 140002
- Jersey Community HospitalJerseyville, IL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 140059
Practice locations
Addresses where Sidney J. Hanish is enrolled with Medicare (CMS data updated October 2, 2026).
- 215 E Ctr DrAlton, IL 62002
- 215 E Ctr Dr, Suite CAlton, IL 62002 (618) 462‑6868
- 400 Maple Summit RdJerseyville, IL 62052 (618) 462‑6868
Specialties
- Ophthalmologyprimary
Other ophthalmologists in Alton
Clinicians with the same Medicare primary specialty in Alton, IL — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Washington University School Of Medicine |
| Graduation year | 1981 (45 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1568523199 |
| 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