Quick answers
- Does Guido Grasso-Knight accept Medicare assignment?
- Yes. Medicare's clinician data says Guido Grasso-Knight 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 Guido Grasso-Knight see?
- In 2024, CMS data shows 103 Original Medicare patients and 526 services for Guido Grasso-Knight. This counts Original Medicare only and measures volume, not quality.
- What is Guido Grasso-Knight's NPI number?
- 1164644266. 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 Guido Grasso-Knight, 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 | 103 |
|---|---|
| Services billed to Medicare | 526 |
| Different services or procedures | 42 |
| 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)148 services
- Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)116 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)54 services
- Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)47 services
- X-ray of chest, 2 views (71046)19 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 cholesterol62%
- High blood pressure61%
- Arthritis35%
- Diabetes25%
- Ischemic heart disease22%
- Depression20%
Hospitals where Guido Grasso-Knight works
Medicare's Facility Affiliation Data lists Guido Grasso-Knight 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.
- Alexian Brothers Medical Center 1Elk Grove Village, IL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 140258
- UChicago Medicine AdventHealth GlenoaksGlendale Heights, IL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 140292
- UChicago Medicine AdventHealth HinsdaleHinsdale, IL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 140122
- UChicago Medicine AdventHealth La GrangeLa Grange, IL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 140065
Practice locations
Addresses where Guido Grasso-Knight is enrolled with Medicare (CMS data updated October 2, 2026).
- 396 Remington BlvdBolingbrook, IL 60440
- 630 E N AveCarol Stream, IL 60188 (630) 458‑5300
Group practices
Medicare enrollment lists Guido Grasso-Knight as a member of this group (CMS data updated October 2, 2026).
- Adventist Health Partners, Inc.255 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Bolingbrook
Clinicians with the same Medicare primary specialty in Bolingbrook, IL — not a recommendation.
Other clinicians in Adventist Health Partners, Inc.
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Medical school | Icahn School Of Medicine At Mount Sinai |
|---|---|
| Graduation year | 2007 (19 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1164644266 |
| 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