DR. ALLISON KLOTZBUECHER D.O.
NPI 1437170552
Internal Medicine in Libertyville, IL
About Dr. Allison Klotzbuecher D.o. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ALLISON KLOTZBUECHER D.O. (NPI 1437170552) is an individual internal medicine provider in Libertyville, Illinois, licensed in Illinois (036090112) and active in the NPI registry since July 2006. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Allison Klotzbuecher D.o. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Allison Klotzbuecher reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Barrington, IL 60011
- Reassigned Medicare billing, Illinois enrollment
- 155 clinicians in this Medicare group
Park Ridge, IL 60068
- Reassigned Medicare billing, Illinois enrollment
- Medicare enrollment name: Advocate Health And Hospitals Corporation
- 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60048 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.
LIBERTYVILLE, IL 60048
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 Allison Klotzbuecher's NPI number?
The NPI number for Allison Klotzbuecher is 1437170552. It was assigned to this individual provider in the NPPES registry on July 22, 2006.
Where is Allison Klotzbuecher located?
Allison Klotzbuecher practices at 716 S Milwaukee Ave, Libertyville, IL 60048. The listed phone number is (847) 362-1393.
What is Allison Klotzbuecher's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Allison Klotzbuecher enrolled in Medicare?
Yes. Allison Klotzbuecher is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Allison Klotzbuecher's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Allison Klotzbuecher reassigns Medicare benefits to 2 organizations: Best Practices Inpatient Care, Ltd. (Barrington, IL) and Lutheran General Hospital (Park Ridge, IL). 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 Allison Klotzbuecher's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Allison Klotzbuecher was last updated on March 7, 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.
# Dr. Allison Klotzbuecher, D.O. · NPI 1437170552
Internal Medicine physician in Libertyville, Illinois. Individual provider, active in the CMS NPPES registry since July 22, 2006.
## Identity
- **NPI:** 1437170552 (Entity type: Individual)
- **Enumerated:** July 22, 2006
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 036090112 (Illinois)
- **Sole proprietor:** No
## Practice location
- **Address:** 716 S MILWAUKEE AVE, Libertyville, IL 60048-3225
- **Phone:** (847) 362-1393 · **Fax:** (847) 367-1480
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Best Practices Inpatient Care, Ltd. (NPI 1073549713, Barrington, IL); Lutheran General Hospital (NPI 1801809306, Park Ridge, IL) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** March 7, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1437170552) · Data from the CMS NPPES public registry.