Quick answers
- Does Marco A. Fernandez accept Medicare assignment?
- Yes. Medicare's clinician data says Marco A. Fernandez 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 Marco A. Fernandez see?
- In 2024, CMS data shows 146 Original Medicare patients and 213 services for Marco A. Fernandez. This counts Original Medicare only and measures volume, not quality.
- What is Marco A. Fernandez's NPI number?
- 1619938008. 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 Marco A. Fernandez, 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 | 146 |
|---|---|
| Services billed to Medicare | 213 |
| Different services or procedures | 43 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Anesthesia for other procedure on large bowel using an endoscope (00811)25 services
- Anesthesia for procedure for total knee joint replacement (01402)17 services
- Anesthesia for total hip replacement (01214)16 services
- Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) (64447)16 services
- Injection of anesthetic agent and/or steroid into arm nerve bundle (brachial plexus) (64415)13 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 cholesterol75%
- High blood pressure67%
- Arthritis64%
- Diabetes23%
- Ischemic heart disease21%
- Anxiety21%
Hospitals where Marco A. Fernandez works
Medicare's Facility Affiliation Data lists Marco A. Fernandez 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.
- Northwestern Medicine McHenryMcHenry, IL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 140116
Practice locations
Addresses where Marco A. Fernandez is enrolled with Medicare (CMS data updated October 2, 2026).
- 1900 Hollister Dr, Suite 100Libertyville, IL 60048 (847) 367‑8100
- 2900 N Lake Shore DrChicago, IL 60657 (773) 665‑3000
- 4201 W Medical Ctr DrMcHenry, IL 60050 (815) 759‑4323
Group practices
Medicare enrollment lists Marco A. Fernandez as a member of these groups (CMS data updated October 2, 2026).
- Northwestern Medical Faculty Foundation4,503 clinicians in the group
- Midwest Anesthesia Partners LLC119 clinicians in the group
Specialties
- Anesthesiologyprimary
Other anesthesiologists in Libertyville
Clinicians with the same Medicare primary specialty in Libertyville, IL — not a recommendation.
Other clinicians in Northwestern Medical Faculty Foundation
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Rush Medical College Of Rush University |
| Graduation year | 1999 (27 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1619938008 |
| 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