DR. MOLLY KLOOSTERBOER GROOSE M.D.
NPI 1164789822
Anesthesiology in Madison, WI
About Dr. Molly Kloosterboer Groose M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MOLLY KLOOSTERBOER GROOSE M.D. (NPI 1164789822) is an individual anesthesiology provider in Madison, Wisconsin, licensed in Wisconsin (61390-20) and active in the NPI registry since April 2012. She is enrolled in Medicare PECOS, is affiliated with University Of Wi Hospitals & Clinics Authority, and is a graduate of University Of Wisconsin School Of Medicine (2012).
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 and accepts Medicare assignment
Dr. Molly Kloosterboer Groose M.d. 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 Molly Groose reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Middleton, WI 53562
- Reassigned Medicare billing, Wisconsin enrollment
- 2,832 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 2
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.
University Of Wi Hospitals & Clinics Authority
Acute Care Hospitals · Madison, WIOther Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
MADISON, WI 53792
MADISON, WI 53792
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 Molly Groose's NPI number?
The NPI number for Molly Groose is 1164789822. It was assigned to this individual provider in the NPPES registry on April 19, 2012.
Where is Molly Groose located?
Molly Groose practices at 600 Highland Ave H4/831, Madison, WI 53792. The listed phone number is (608) 263-8114.
What is Molly Groose's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Molly Groose enrolled in Medicare?
Yes. Molly Groose 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 Molly Groose's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Molly Groose reassigns Medicare benefits to University Of Wisconsin Medical Foundation, Inc (Middleton, WI). 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 Molly Groose's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Molly Groose affiliated with any hospitals?
According to CMS data, Molly Groose is affiliated with University Of Wi Hospitals & Clinics Authority.
When was this NPI record last updated?
The NPPES record for Molly Groose was last updated on January 25, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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. Molly Kloosterboer Groose, M.D. · NPI 1164789822
Anesthesiology physician in Madison, Wisconsin. Individual provider, active in the CMS NPPES registry since April 19, 2012.
## Identity
- **NPI:** 1164789822 (Entity type: Individual)
- **Enumerated:** April 19, 2012
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** 61390-20 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** 600 HIGHLAND AVE, H4/831, Madison, WI 53792-0001
- **Phone:** (608) 263-8114
## 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:** University Of Wisconsin Medical Foundation, Inc (NPI 1598784555, Middleton, WI), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Wisconsin School Of Medicine, class of 2012
## Record status
- **NPPES last updated:** January 25, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1164789822) · Data from the CMS NPPES public registry.