DR. MARK R KROLL D.O.
NPI 1124030499
Emergency Medicine in Green Bay, WI
About Dr. Mark R Kroll D.o. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MARK R KROLL D.O. (NPI 1124030499) is an individual emergency medicine provider in Green Bay, Wisconsin, licensed in Wisconsin (30436-21) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS, is affiliated with Aurora Baycare Medical Ctr, and is a graduate of Des Moines University Of Osteopathic Medicine And Health Sciences (1988).
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 1
Accepted Insurance
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. Mark R Kroll D.o. 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 Reassignments
4Medicare enrollment records show Mark Kroll reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Green Bay, WI 54303
- Reassigned Medicare billing, Wisconsin enrollment
- 875 clinicians in this Medicare group
Green Bay, WI 54311
- Reassigned Medicare billing, Wisconsin enrollment
- 275 clinicians in this Medicare group
Oconto Falls, WI 54154
- Reassigned Medicare billing, Wisconsin enrollment
- 573 clinicians in this Medicare group
Milwaukee, WI 53216
- Reassigned Medicare billing, Wisconsin enrollment
- 52 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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Aurora Baycare Medical Ctr
Acute Care Hospitals · Green Bay, WIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 54303 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.
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 Mark Kroll's NPI number?
The NPI number for Mark Kroll is 1124030499. It was assigned to this individual provider in the NPPES registry on August 13, 2006.
Where is Mark Kroll located?
Mark Kroll practices at 2253 W Mason St, Green Bay, WI 54303. The listed phone number is (920) 327-7000.
What is Mark Kroll's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Mark Kroll enrolled in Medicare?
Yes. Mark Kroll 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 organizations bill Medicare for Mark Kroll's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mark Kroll reassigns Medicare benefits to 4 organizations: Bellin Memorial Hospital Inc (Green Bay, WI), Baycare Clinic LLP (Green Bay, WI), Oconto Hospital & Medical Center, Inc. (Oconto Falls, WI) and Independent Physicians Of Wisconsin, LLC (Milwaukee, WI). 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 Mark Kroll's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mark Kroll accept?
Health plans from CareSource (Common Ground Healthcare) and HealthPartners list Mark Kroll as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Mark Kroll affiliated with any hospitals?
According to CMS data, Mark Kroll is affiliated with Aurora Baycare Medical Ctr.
When was this NPI record last updated?
The NPPES record for Mark Kroll was last updated on May 19, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# Dr. Mark R Kroll, D.O. · NPI 1124030499
Emergency Medicine physician in Green Bay, Wisconsin. Individual provider, active in the CMS NPPES registry since August 13, 2006.
## Identity
- **NPI:** 1124030499 (Entity type: Individual)
- **Enumerated:** August 13, 2006
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 30436-21 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** 2253 W MASON ST, Green Bay, WI 54303-4706
- **Phone:** (920) 327-7000
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): Bellin Memorial Hospital Inc (NPI 1073566725, Green Bay, WI); Baycare Clinic LLP (NPI 1588609648, Green Bay, WI); Oconto Hospital & Medical Center, Inc. (NPI 1063038313, Oconto Falls, WI); Independent Physicians Of Wisconsin, LLC (NPI 1871975920, Milwaukee, WI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Des Moines University Of Osteopathic Medicine And Health Sciences, class of 1988
## Record status
- **NPPES last updated:** May 19, 2026
- **Other identifiers:** Medicaid 30049600 (WI)
---
Source: [NPI Profile](https://npiprofile.com/npi/1124030499) · Data from the CMS NPPES public registry.