MARTIN K. RERIANI MD
NPI 1689838252
Internal Medicine - Critical Care Medicine in Marshfield, WI
About Martin K. Reriani Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARTIN K. RERIANI MD (NPI 1689838252) is an individual critical care medicine provider in Marshfield, Wisconsin, licensed in Wisconsin (57307) and active in the NPI registry since July 2008. He is enrolled in Medicare PECOS, is affiliated with Marshfield Medical Center, and is a graduate of Other (2002).
NPPES Registry Identity
Specialties & Licenses 3
Other Identifiers 2
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
Martin K. Reriani 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 Reassignments
2Medicare enrollment records show Martin Reriani reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Marshfield, WI 54449
- Reassigned Medicare billing, Wisconsin enrollment
- 2,540 clinicians in this Medicare group
Marshfield, WI 54449
- Reassigned Medicare billing, Wisconsin enrollment
- 2,476 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 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Marshfield Medical Center
Acute Care Hospitals · Marshfield, WIMarshfield Medical Center - Weston
Acute Care Hospitals · Weston, WIMarshfield Medical Center - Eau Claire
Acute Care Hospitals · Eau Claire, WIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 54449 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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.
MARSHFIELD, WI 54449
MARSHFIELD, WI 54449
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 Martin Reriani's NPI number?
The NPI number for Martin Reriani is 1689838252. It was assigned to this individual provider in the NPPES registry on July 14, 2008.
Where is Martin Reriani located?
Martin Reriani practices at 1000 N Oak Ave, Marshfield, WI 54449. The listed phone number is (715) 387-5511.
What is Martin Reriani's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Critical Care Medicine, with taxonomy code 207RC0200X.
Is Martin Reriani enrolled in Medicare?
Yes. Martin Reriani 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 Martin Reriani's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Martin Reriani reassigns Medicare benefits to 2 organizations: Marshfield Clinic Inc (Marshfield, WI) and Mchs Hospitals Inc (Marshfield, 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 Martin Reriani's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Martin Reriani accept?
Health plans from HealthPartners, Sanford Health Plan and Security Health Plan list Martin Reriani 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 Martin Reriani affiliated with any hospitals?
According to CMS data, Martin Reriani is affiliated with Marshfield Medical Center, Marshfield Medical Center - Weston and Marshfield Medical Center - Eau Claire.
When was this NPI record last updated?
The NPPES record for Martin Reriani was last updated on April 16, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Martin K. Reriani, MD · NPI 1689838252
Critical Care Medicine physician in Marshfield, Wisconsin. Individual provider, active in the CMS NPPES registry since July 14, 2008.
## Identity
- **NPI:** 1689838252 (Entity type: Individual)
- **Enumerated:** July 14, 2008
- **Primary specialty:** Internal Medicine - Critical Care Medicine · taxonomy 207RC0200X
- **State license:** 57307 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** 1000 N OAK AVE, Marshfield, WI 54449-5703
- **Phone:** (715) 387-5511
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Marshfield Clinic Inc (NPI 1952347981, Marshfield, WI); Mchs Hospitals Inc (NPI 1093221434, Marshfield, WI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2002
## Record status
- **NPPES last updated:** April 16, 2024
- **Other identifiers:** Medicaid APPR (WI); Medicaid ENROLLED (MN)
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Source: [NPI Profile](https://npiprofile.com/npi/1689838252) · Data from the CMS NPPES public registry.