ANDREW JONATHON GEISER MD
NPI 1891343133
Emergency Medicine in Libertyville, IL
About Andrew Jonathon Geiser Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ANDREW JONATHON GEISER MD (NPI 1891343133) is an individual emergency medicine provider in Libertyville, Illinois, licensed in Illinois (125081849) and active in the NPI registry since August 2019. He is enrolled in Medicare PECOS, is affiliated with Advocate Condell Medical Center, and is a graduate of Other (2023).
NPPES Registry Identity
Specialties & Licenses
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
Andrew Jonathon Geiser 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 Andrew Geiser reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Libertyville, IL 60048
- Reassigned Medicare billing, Illinois enrollment
- 982 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.
Advocate Condell Medical Center
Acute Care Hospitals · Libertyville, ILPhysician 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
LIBERTYVILLE, IL 60048
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 Andrew Geiser's NPI number?
The NPI number for Andrew Geiser is 1891343133. It was assigned to this individual provider in the NPPES registry on August 29, 2019.
Where is Andrew Geiser located?
Andrew Geiser practices at 801 S Milwaukee Ave, Libertyville, IL 60048. The listed phone number is (847) 362-2900.
What is Andrew Geiser's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Andrew Geiser enrolled in Medicare?
Yes. Andrew Geiser 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 Andrew Geiser's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Andrew Geiser reassigns Medicare benefits to Cepamerica Illinois LLP (Libertyville, 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 Andrew Geiser's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Andrew Geiser affiliated with any hospitals?
According to CMS data, Andrew Geiser is affiliated with Advocate Condell Medical Center.
When was this NPI record last updated?
The NPPES record for Andrew Geiser was last updated on July 2, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Andrew Jonathon Geiser, MD · NPI 1891343133
Emergency Medicine physician in Libertyville, Illinois. Individual provider, active in the CMS NPPES registry since August 29, 2019.
## Identity
- **NPI:** 1891343133 (Entity type: Individual)
- **Enumerated:** August 29, 2019
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 125081849 (Illinois)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 801 S MILWAUKEE AVE, Libertyville, IL 60048-3204
- **Phone:** (847) 362-2900
## 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:** Cepamerica Illinois LLP (NPI 1740906577, Libertyville, IL), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2023
## Record status
- **NPPES last updated:** July 2, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1891343133) · Data from the CMS NPPES public registry.