NIKOLAOS ANDREAS DALLAS MD
NPI 1952497729
Surgery in Chicago, IL
About Nikolaos Andreas Dallas Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
NIKOLAOS ANDREAS DALLAS MD (NPI 1952497729) is an individual surgery provider in Chicago, Illinois, licensed in Illinois (036119424) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS, is affiliated with Advocate Illinois Masonic Medical Center, and is a graduate of Northwestern University Feinberg Medical School (2004).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
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
Nikolaos Andreas Dallas Md 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 Reassignment
Medicare enrollment records show Nikolaos Dallas reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Chicago, IL 60657
- Reassigned Medicare billing, Illinois enrollment
- 4,870 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 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Advocate Illinois Masonic Medical Center
Acute Care Hospitals · Chicago, ILAdvocate Christ Hospital & Medical Center
Acute Care Hospitals · Oak Lawn, ILAdvocate Lutheran General Hospital
Acute Care Hospitals · Park Ridge, ILPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60657 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 12
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
CHICAGO, IL 60657
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 Nikolaos Dallas's NPI number?
The NPI number for Nikolaos Dallas is 1952497729. It was assigned to this individual provider in the NPPES registry on October 5, 2006.
Where is Nikolaos Dallas located?
Nikolaos Dallas practices at 3000 N Halsted St Ste 509, Chicago, IL 60657. The listed phone number is (773) 296-3390.
What is Nikolaos Dallas's specialty?
The primary specialty registered for this NPI is Surgery with taxonomy code 208600000X.
Is Nikolaos Dallas enrolled in Medicare?
Yes. Nikolaos Dallas 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 organization bills Medicare for Nikolaos Dallas's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Nikolaos Dallas reassigns Medicare benefits to Advocate Health And Hospitals Corp. (Chicago, IL). The 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 Nikolaos Dallas's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Nikolaos Dallas accept?
Health plans from Oscar Health list Nikolaos Dallas 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 Nikolaos Dallas affiliated with any hospitals?
According to CMS data, Nikolaos Dallas is affiliated with Advocate Illinois Masonic Medical Center, Advocate Christ Hospital & Medical Center and Advocate Lutheran General Hospital.
When was this NPI record last updated?
The NPPES record for Nikolaos Dallas was last updated on February 1, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years 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.
# Nikolaos Andreas Dallas, MD · NPI 1952497729
Surgery physician in Chicago, Illinois. Individual provider, active in the CMS NPPES registry since October 5, 2006.
## Identity
- **NPI:** 1952497729 (Entity type: Individual)
- **Enumerated:** October 5, 2006
- **Primary specialty:** Surgery · taxonomy 208600000X
- **State license:** 036119424 (Illinois)
- **Sole proprietor:** No
## Practice location
- **Address:** 3000 N HALSTED ST STE 509, Chicago, IL 60657-5194
- **Phone:** (773) 296-3390 · **Fax:** (773) 296-7531
## 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:** Advocate Health And Hospitals Corp. (NPI 1487951711, Chicago, IL), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Northwestern University Feinberg Medical School, class of 2004
## Record status
- **NPPES last updated:** February 1, 2023
- **Other identifiers:** Medicaid 192628902 (MDACC) (TX); Other 8CV491 (MDACC) (TX); Other 8V4806 (FL)
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Source: [NPI Profile](https://npiprofile.com/npi/1952497729) · Data from the CMS NPPES public registry.