Quick answers
- Does Roberto Montoya Barraza accept Medicare assignment?
- Yes. Medicare's clinician data says Roberto Montoya Barraza 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 Roberto Montoya Barraza see?
- In 2024, CMS data shows 604 Original Medicare patients and 114,189 services for Roberto Montoya Barraza. This counts Original Medicare only and measures volume, not quality.
- What is Roberto Montoya Barraza's NPI number?
- 1396943635. 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 Roberto Montoya Barraza, 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 | 604 |
|---|---|
| Services billed to Medicare | 114,189 |
| Different services or procedures | 137 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Injection, ferric carboxymaltose, 1 mg (J1439)18,000 services
- Injection, darbepoetin alfa, 1 microgram (non-esrd use) (J0881)6,320 services
- Injection, aprepitant, 1 mg (J0185)3,770 services
- Injection, granisetron, extended-release, 0.1 mg (J1627)3,400 services
- Injection, dexamethasone sodium phosphate, 1 mg (J1100)1,136 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%
- Arthritis52%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)47%
- Diabetes34%
- Ischemic heart disease32%
Hospitals where Roberto Montoya Barraza works
Medicare's Facility Affiliation Data lists Roberto Montoya Barraza 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.
- Advocate Good Shepherd HospitalBarrington, IL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 140291
- Advocate Illinois Masonic Medical CenterChicago, IL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 140182
- Alexian Brothers Medical Center 1Elk Grove Village, IL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 140258
- Northwest Community Hospital 1Arlington Heights, IL · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 140252
- St Alexius Medical CenterHoffman Estates, IL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 140290
Practice locations
Addresses where Roberto Montoya Barraza is enrolled with Medicare (CMS data updated October 2, 2026).
- 1435 N Randall Rd, Suite 501Elgin, IL 60123 (847) 885‑4100
- 27750 W Il Route 22, Suite G70Barrington, IL 60010 (847) 885‑4100
Group practices
Medicare enrollment lists Roberto Montoya Barraza as a member of this group (CMS data updated October 2, 2026).
- Northwest Oncology and Hematology SC22 clinicians in the group
Specialties
- Hematology/Oncologyprimary
Other hematologist-oncologists in Elgin
Clinicians with the same Medicare primary specialty in Elgin, IL — not a recommendation.
Other clinicians in Northwest Oncology and Hematology SC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2005 (21 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) | 1396943635 |
| 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