DR. NICHOLAS ANTON DORIN M.D.
NPI 1659669794
Internal Medicine - Critical Care Medicine in Geneva, IL
About Dr. Nicholas Anton Dorin M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. NICHOLAS ANTON DORIN M.D. (NPI 1659669794) is an individual critical care medicine provider in Geneva, Illinois, licensed in Illinois (036140548) and active in the NPI registry since July 2011. He is enrolled in Medicare PECOS, is affiliated with Northwestern Medicine Delnor Community Hospital, and is a graduate of Chicago College Of Medicine And Surgery (2011).
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 1
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. Nicholas Anton Dorin 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 Reassignment
Medicare enrollment records show Nicholas Dorin reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Carol Stream, IL 60122
- Reassigned Medicare billing, Illinois enrollment
- 1,664 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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Northwestern Medicine Delnor Community Hospital
Acute Care Hospitals · Geneva, ILNorthwestern Medicine Central Dupage Hospital
Acute Care Hospitals · Winfield, ILPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60134 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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.
GENEVA, IL 60134
GENEVA, IL 60134
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 Nicholas Dorin's NPI number?
The NPI number for Nicholas Dorin is 1659669794. It was assigned to this individual provider in the NPPES registry on July 11, 2011.
Where is Nicholas Dorin located?
Nicholas Dorin practices at 300 Randall Rd, Geneva, IL 60134. The listed phone number is (630) 933-4700.
What is Nicholas Dorin's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Critical Care Medicine, with taxonomy code 207RC0200X.
Is Nicholas Dorin enrolled in Medicare?
Yes. Nicholas Dorin 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 Nicholas Dorin's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Nicholas Dorin reassigns Medicare benefits to Central Dupage Physician Group (Carol Stream, 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 Nicholas Dorin's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Nicholas Dorin affiliated with any hospitals?
According to CMS data, Nicholas Dorin is affiliated with Northwestern Medicine Delnor Community Hospital and Northwestern Medicine Central Dupage Hospital.
When was this NPI record last updated?
The NPPES record for Nicholas Dorin was last updated on August 17, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.
# Dr. Nicholas Anton Dorin, M.D. · NPI 1659669794
Critical Care Medicine physician in Geneva, Illinois. Individual provider, active in the CMS NPPES registry since July 11, 2011.
## Identity
- **NPI:** 1659669794 (Entity type: Individual)
- **Enumerated:** July 11, 2011
- **Primary specialty:** Internal Medicine - Critical Care Medicine · taxonomy 207RC0200X
- **State license:** 036140548 (Illinois)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 300 RANDALL RD, Geneva, IL 60134-4200
- **Phone:** (630) 933-4700 · **Fax:** (630) 933-4427
## 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:** Central Dupage Physician Group (NPI 1033149844, Carol Stream, IL), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Chicago College Of Medicine And Surgery, class of 2011
## Record status
- **NPPES last updated:** August 17, 2016
- **Other identifiers:** Medicaid 036140548 (IL)
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Source: [NPI Profile](https://npiprofile.com/npi/1659669794) · Data from the CMS NPPES public registry.