JACKSON T KNAPPEN MD
NPI 1811639081
Hospitalist in Chicago, IL
About Jackson T Knappen Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JACKSON T KNAPPEN MD (NPI 1811639081) is an individual hospitalist provider in Chicago, Illinois, licensed in Illinois (036171856) and active in the NPI registry since April 2022. He is enrolled in Medicare PECOS, is affiliated with Northwestern Memorial Hospital, and maintains a secondary practice location in Chicago.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Jackson T Knappen 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Northwestern Memorial Hospital
Acute Care Hospitals · Chicago, ILPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60612 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 60612
CHICAGO, IL 60612
CHICAGO, IL 60612
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 Jackson Knappen's NPI number?
The NPI number for Jackson Knappen is 1811639081. It was assigned to this individual provider in the NPPES registry on April 8, 2022.
Where is Jackson Knappen located?
Jackson Knappen practices at 820 S Wood St Ste 100, Chicago, IL 60612. The listed phone number is (312) 996-2933.
What is Jackson Knappen's specialty?
The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.
Is Jackson Knappen enrolled in Medicare?
Yes. Jackson Knappen 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.
Is Jackson Knappen affiliated with any hospitals?
According to CMS data, Jackson Knappen is affiliated with Northwestern Memorial Hospital.
When was this NPI record last updated?
The NPPES record for Jackson Knappen was last updated on July 8, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.
# Jackson T Knappen, MD · NPI 1811639081
Hospitalist physician in Chicago, Illinois. Individual provider, active in the CMS NPPES registry since April 8, 2022.
## Identity
- **NPI:** 1811639081 (Entity type: Individual)
- **Enumerated:** April 8, 2022
- **Primary specialty:** Hospitalist · taxonomy 208M00000X
- **State license:** 036171856 (Illinois)
- **Sole proprietor:** No
## Practice location
- **Address:** 820 S WOOD ST STE 100, Chicago, IL 60612-4325
- **Phone:** (312) 996-2933
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Medical school:** Other, class of 2022
## Record status
- **NPPES last updated:** July 8, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1811639081) · Data from the CMS NPPES public registry.