DR. MARCIO A SHIOKAWA MD
NPI 1629388475
Hospitalist in Fond Du Lac, WI
About Dr. Marcio A Shiokawa Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MARCIO A SHIOKAWA MD (NPI 1629388475) is an individual hospitalist provider in Fond Du Lac, Wisconsin, licensed in Wisconsin (64649) and active in the NPI registry since October 2010. He is enrolled in Medicare PECOS, is affiliated with St. Agnes Hospital Hospice, and is a graduate of Other (2000).
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. Marcio A Shiokawa 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
6Medicare enrollment records show Marcio Shiokawa reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Fond Du Lac, WI 54935
- Reassigned Medicare billing, Wisconsin enrollment
- 606 clinicians in this Medicare group
Iola, WI 54945
- Reassigned Medicare billing, Wisconsin enrollment
- 935 clinicians in this Medicare group
Plover, WI 54467
- Reassigned Medicare billing, Wisconsin enrollment
- Also billed through NPI 1952890873 (Wisconsin)
- 2,476 clinicians in this Medicare group
Stevens Point, WI 54481
- Reassigned Medicare billing, Wisconsin enrollment
- 619 clinicians in this Medicare group
Marshfield, WI 54449
- Reassigned Medicare billing, Wisconsin enrollment
- 2,540 clinicians in this Medicare group
Chetek, WI 54728
- Reassigned Medicare billing, Wisconsin enrollment
- 1,616 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 8
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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
St. Agnes Hospital Hospice
Acute Care Hospitals · Fond Du Lac, WIWaupun Memorial Hospital
Critical Access Hospitals · Waupun, WIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 54935 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.
FOND DU LAC, WI 54935
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 Marcio Shiokawa's NPI number?
The NPI number for Marcio Shiokawa is 1629388475. It was assigned to this individual provider in the NPPES registry on October 14, 2010.
Where is Marcio Shiokawa located?
Marcio Shiokawa practices at 430 E Division St, Fond Du Lac, WI 54935. The listed phone number is (920) 926-8340.
What is Marcio Shiokawa's specialty?
The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.
Is Marcio Shiokawa enrolled in Medicare?
Yes. Marcio Shiokawa 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 Marcio Shiokawa's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Marcio Shiokawa reassigns Medicare benefits to 6 organizations: Agnesian Healthcare Inc (Fond Du Lac, WI), Aspirus Rhinelander & Tomahawk Hospitals & Clinics, Inc. (Iola, WI), Mchs Hospitals, Inc. (Plover, WI), Aspirus Stevens Point Hospital & Clinics, Inc. (Stevens Point, WI), Marshfield Clinic Inc (Marshfield, WI) and 1 more organization, listed in the Medicare section above. 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 Marcio Shiokawa's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Marcio Shiokawa affiliated with any hospitals?
According to CMS data, Marcio Shiokawa is affiliated with St. Agnes Hospital Hospice and Waupun Memorial Hospital.
When was this NPI record last updated?
The NPPES record for Marcio Shiokawa was last updated on November 17, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.