DR. FERNANDO ORELLANA M.D.
NPI 1548260623
Emergency Medicine in Chicago, IL
About Dr. Fernando Orellana M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. FERNANDO ORELLANA M.D. (NPI 1548260623) is an individual emergency medicine provider in Chicago, Illinois, licensed in Illinois (036-111795) and active in the NPI registry since July 2005. He is enrolled in Medicare PECOS, is affiliated with Mt Sinai Hospital Medical Center, and maintains a secondary practice location in Watseka.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Other Identifiers 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Fernando Orellana M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
7Medicare enrollment records show Fernando Orellana reassigns Medicare billing to 7 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Chicago, IL 60608
- Reassigned Medicare billing, Illinois enrollment
- 646 clinicians in this Medicare group
Chicago, IL 60608
- Reassigned Medicare billing, Illinois enrollment
- 982 clinicians in this Medicare group
Chicago, IL 60624
- Reassigned Medicare billing, Illinois enrollment
- 4,870 clinicians in this Medicare group
Pleasant Prairie, WI 53158
- Reassigned Medicare billing, Wisconsin enrollment
- 104 clinicians in this Medicare group
Saint Anne, IL 60964
- Reassigned Medicare billing, Illinois enrollment
- Also billed through NPI 1629003470 (Illinois)
- 78 clinicians in this Medicare group
Harrisburg, IL 62946
- Reassigned Medicare billing, Illinois enrollment
- 169 clinicians in this Medicare group
- Reassigned Medicare billing, Illinois enrollment
- 208 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 4
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mt Sinai Hospital Medical Center
Acute Care Hospitals · Chicago, ILHoly Cross Hospital
Acute Care Hospitals · Chicago, ILFranciscan Health Olympia & Chicago Heights
Acute Care Hospitals · Olympia Fields, ILCrossroads Community Hospital
Acute Care Hospitals · Mount Vernon, ILSt Nicholas Hospital
Acute Care Hospitals · Sheboygan, WIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60608 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
CHICAGO, IL 60608
CHICAGO, IL 60608
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Fernando Orellana's NPI number?
The NPI number for Fernando Orellana is 1548260623. It was assigned to this individual provider in the NPPES registry on July 29, 2005.
Where is Fernando Orellana located?
Fernando Orellana practices at 1501 S California Ave, Chicago, IL 60608. The listed phone number is (773) 257-6843.
What is Fernando Orellana's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Fernando Orellana enrolled in Medicare?
Yes. Fernando Orellana is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Fernando Orellana's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Fernando Orellana reassigns Medicare benefits to 7 organizations: Mount Sinai Community Foundation (Chicago, IL), Cepamerica Illinois LLP (Chicago, IL), Advocate Health And Hospitals Corporation (Chicago, IL), Vituity-Wisconsin Em Sc (Pleasant Prairie, WI), Iroquois Memorial Hospital And Resident Home (Saint Anne, IL) and 2 more organizations, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Fernando Orellana's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Fernando Orellana accept?
Health plans from CareSource list Fernando Orellana as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Fernando Orellana affiliated with any hospitals?
According to CMS data, Fernando Orellana is affiliated with Mt Sinai Hospital Medical Center, Holy Cross Hospital, Franciscan Health Olympia & Chicago Heights, Crossroads Community Hospital and St Nicholas Hospital.
When was this NPI record last updated?
The NPPES record for Fernando Orellana was last updated on May 6, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. Fernando Orellana, M.D. · NPI 1548260623
Emergency Medicine physician in Chicago, Illinois. Individual provider, active in the CMS NPPES registry since July 29, 2005.
## Identity
- **NPI:** 1548260623 (Entity type: Individual)
- **Enumerated:** July 29, 2005
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 036-111795 (Illinois)
- **Sole proprietor:** No
## Practice location
- **Address:** 1501 S CALIFORNIA AVE, Chicago, IL 60608-1732
- **Phone:** (773) 257-6843
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 7 organizations under Medicare reassignment (form CMS-855R): Mount Sinai Community Foundation (NPI 1104858125, Chicago, IL); Cepamerica Illinois LLP (NPI 1265954465, Chicago, IL); Advocate Health And Hospitals Corporation (NPI 1801838339, Chicago, IL); Vituity-Wisconsin Em Sc (NPI 1326730664, Pleasant Prairie, WI); Iroquois Memorial Hospital And Resident Home (NPI 1215650528, Saint Anne, IL); and 2 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2000
## Record status
- **NPPES last updated:** May 6, 2026
- **Other identifiers:** Medicaid 036111795 (IL); Medicaid 036-111795-1 (IL)
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Source: [NPI Profile](https://npiprofile.com/npi/1548260623) · Data from the CMS NPPES public registry.