Quick answers
- Does Sunto Yen accept Medicare assignment?
- Yes. Medicare's clinician data says Sunto Yen 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 Sunto Yen see?
- In 2024, CMS data shows 406 Original Medicare patients and 17,233 services for Sunto Yen. This counts Original Medicare only and measures volume, not quality.
- What is Sunto Yen's NPI number?
- 1255610937. 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 Sunto Yen, 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 | 406 |
|---|---|
| Services billed to Medicare | 17,233 |
| Different services or procedures | 40 |
| Participating Medicare provider | Yes |
| Average age of these patients | 78 |
Most frequent services
- Injection, methylprednisolone acetate, 1 mg (J1010)8,360 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)2,135 services
- Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more (99308)1,716 services
- Hyaluronan or derivitive, genvisc 850, for intra-articular injection, 1 mg (J7320)1,175 services
- Therapy procedure using exercise to develop strength, endurance, range of motion, and flexibility, each 15 minutes (97110)780 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%
- Diabetes57%
- Depression46%
- Anxiety45%
Hospitals where Sunto Yen works
Medicare's Facility Affiliation Data lists Sunto Yen 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.
- Saint Francis Hospital-EvanstonEvanston, IL · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 140080
Practice locations
Addresses where Sunto Yen is enrolled with Medicare (CMS data updated October 2, 2026).
- 2451 W Touhy AveChicago, IL 60645 (773) 338‑6800
Specialties
Find other Physical Medicine and Rehabilitation doctors in Illinois →
Other rehabilitation doctors in Chicago
Clinicians with the same Medicare primary specialty in Chicago, IL — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1994 (32 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1255610937 |
| 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