DR. RAINA L HOLLENBAUGH M.D.
NPI 1437132248
Anesthesiology in Oconomowoc, WI
About Dr. Raina L Hollenbaugh M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. RAINA L HOLLENBAUGH M.D. (NPI 1437132248) is an individual anesthesiology provider in Oconomowoc, Wisconsin, licensed in Wisconsin (30573-020) and active in the NPI registry since November 2005. She is enrolled in Medicare PECOS, is affiliated with The Monroe Clinic, and maintains a secondary practice location in Janesville.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Other Identifiers 1
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. Raina L Hollenbaugh 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 Reassignments
4Medicare enrollment records show Raina Hollenbaugh reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Janesville, WI 53548
- Reassigned Medicare billing, Wisconsin enrollment
- 1,155 clinicians in this Medicare group
Madison, WI 53715
- Reassigned Medicare billing, Wisconsin enrollment
- 1,377 clinicians in this Medicare group
Monroe, WI 53566
- Reassigned Medicare billing, Wisconsin enrollment
- 376 clinicians in this Medicare group
Townsend, MT 59644
- Reassigned Medicare billing, Montana enrollment
- Medicare enrollment name: St Peters Health
- 304 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
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 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
The Monroe Clinic
Acute Care Hospitals · Monroe, WIMercy Health System Corp
Acute Care Hospitals · Janesville, WISsm Health St Mary's Hospital - Janesville
Acute Care Hospitals · Janesville, 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.
OCONOMOWOC, WI 53066
OCONOMOWOC, WI 53066
OCONOMOWOC, WI 53066
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 Raina Hollenbaugh's NPI number?
The NPI number for Raina Hollenbaugh is 1437132248. It was assigned to this individual provider in the NPPES registry on November 25, 2005.
Where is Raina Hollenbaugh located?
Raina Hollenbaugh practices at 791 E Summit Ave, Oconomowoc, WI 53066. The listed phone number is (262) 569-9400.
What is Raina Hollenbaugh's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Raina Hollenbaugh enrolled in Medicare?
Yes. Raina Hollenbaugh 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 Raina Hollenbaugh's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Raina Hollenbaugh reassigns Medicare benefits to 4 organizations: Mercy Health System Corporation (Janesville, WI), Dean Health Systems, Inc (Madison, WI), The Monroe Clinic, Inc. (Monroe, WI) and St. Peter's Health (Townsend, MT). 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 Raina Hollenbaugh's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Raina Hollenbaugh affiliated with any hospitals?
According to CMS data, Raina Hollenbaugh is affiliated with The Monroe Clinic, Mercy Health System Corp and Ssm Health St Mary's Hospital - Janesville.
When was this NPI record last updated?
The NPPES record for Raina Hollenbaugh was last updated on September 12, 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.
# Dr. Raina L Hollenbaugh, M.D. · NPI 1437132248
Anesthesiology physician in Oconomowoc, Wisconsin. Individual provider, active in the CMS NPPES registry since November 25, 2005.
## Identity
- **NPI:** 1437132248 (Entity type: Individual)
- **Enumerated:** November 25, 2005
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** 30573-020 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** 791 E SUMMIT AVE, Oconomowoc, WI 53066-3844
- **Phone:** (262) 569-9400
## 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): Mercy Health System Corporation (NPI 1669685129, Janesville, WI); Dean Health Systems, Inc (NPI 1053358846, Madison, WI); The Monroe Clinic, Inc. (NPI 1386720548, Monroe, WI); St. Peter's Health (NPI 1174165682, Townsend, MT) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Washington School Of Medicine, class of 1988
## Record status
- **NPPES last updated:** September 12, 2025
- **Other identifiers:** Medicaid 1437132248 (WI)
---
Source: [NPI Profile](https://npiprofile.com/npi/1437132248) · Data from the CMS NPPES public registry.