CHRISTOPHER PATRICK O'HARA MD
NPI 1679032593
Internal Medicine - Critical Care Medicine in Mchenry, IL
About Christopher Patrick O'hara Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CHRISTOPHER PATRICK O'HARA MD (NPI 1679032593) is an individual critical care medicine provider in Mchenry, Illinois, licensed in Illinois (036161898) and active in the NPI registry since March 2019. He is enrolled in Medicare PECOS, is affiliated with Northwestern Medicine Mchenry, and maintains a secondary practice location in Huntley.
NPPES Registry Identity
Specialties & Licenses 3
Secondary Practice Location 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
Christopher Patrick O'hara 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 Christopher O'hara 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Northwestern Medicine Mchenry
Acute Care Hospitals · Mchenry, ILPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60050 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.
Referred Medical Equipment & Supplies CMS DME claims 3
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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.
MCHENRY, IL 60050
MCHENRY, IL 60050
MCHENRY, IL 60050
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 Christopher O'hara's NPI number?
The NPI number for Christopher O'hara is 1679032593. It was assigned to this individual provider in the NPPES registry on March 19, 2019.
Where is Christopher O'hara located?
Christopher O'hara practices at 4201 W Medical Center Dr, Mchenry, IL 60050. The listed phone number is (815) 759-4530.
What is Christopher O'hara's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Critical Care Medicine, with taxonomy code 207RC0200X.
Is Christopher O'hara enrolled in Medicare?
Yes. Christopher O'hara 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 Christopher O'hara's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Christopher O'hara 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 Christopher O'hara's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Christopher O'hara affiliated with any hospitals?
According to CMS data, Christopher O'hara is affiliated with Northwestern Medicine Mchenry.
When was this NPI record last updated?
The NPPES record for Christopher O'hara was last updated on August 6, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.
# Christopher Patrick O'hara, MD · NPI 1679032593
Critical Care Medicine physician in Mchenry, Illinois. Individual provider, active in the CMS NPPES registry since March 19, 2019.
## Identity
- **NPI:** 1679032593 (Entity type: Individual)
- **Enumerated:** March 19, 2019
- **Primary specialty:** Internal Medicine - Critical Care Medicine · taxonomy 207RC0200X
- **State license:** 036161898 (Illinois)
- **Sole proprietor:** No
## Practice location
- **Address:** 4201 W MEDICAL CENTER DR, Mchenry, IL 60050-8409
- **Phone:** (815) 759-4530 · **Fax:** (815) 759-8053
## 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:** Loyola University Of Chicago, Stritch School Of Medicine, class of 2019
## Record status
- **NPPES last updated:** August 6, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1679032593) · Data from the CMS NPPES public registry.