DR. MICHAEL G OLACIREGUI M.D.
NPI 1811094972
Internal Medicine in Milwaukee, WI
About Dr. Michael G Olaciregui M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MICHAEL G OLACIREGUI M.D. (NPI 1811094972) is an individual internal medicine provider in Milwaukee, Wisconsin, licensed in Wisconsin (42851-020) and active in the NPI registry since September 2006. He is enrolled in Medicare PECOS and is a graduate of Other (1984).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
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. Michael G Olaciregui 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
2Medicare enrollment records show Michael Olaciregui reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Milwaukee, WI 53216
- Reassigned Medicare billing, Wisconsin enrollment
- 52 clinicians in this Medicare group
Thiensville, WI 53092
- Reassigned Medicare billing, Wisconsin enrollment
- Medicare enrollment name: Interpedia Sc
- 6 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 53207 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES
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 Michael Olaciregui's NPI number?
The NPI number for Michael Olaciregui is 1811094972. It was assigned to this individual provider in the NPPES registry on September 20, 2006.
Where is Michael Olaciregui located?
Michael Olaciregui practices at 573 W Lincoln Ave, Milwaukee, WI 53207. The listed phone number is (414) 385-9801.
What is Michael Olaciregui's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Michael Olaciregui enrolled in Medicare?
Yes. Michael Olaciregui 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 Michael Olaciregui's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Michael Olaciregui reassigns Medicare benefits to 2 organizations: Independent Physicians Of Wisconsin, LLC (Milwaukee, WI) and Interpedia, S.C. (Thiensville, 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 Michael Olaciregui's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Michael Olaciregui accept?
Health plans from Anthem Blue Cross and Blue Shield, CareSource (Common Ground Healthcare), Network Health and UnitedHealthcare list Michael Olaciregui 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.
When was this NPI record last updated?
The NPPES record for Michael Olaciregui was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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. Michael G Olaciregui, M.D. · NPI 1811094972
Internal Medicine physician in Milwaukee, Wisconsin. Individual provider, active in the CMS NPPES registry since September 20, 2006.
## Identity
- **NPI:** 1811094972 (Entity type: Individual)
- **Enumerated:** September 20, 2006
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 42851-020 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** 573 W LINCOLN AVE, Milwaukee, WI 53207-1141
- **Phone:** (414) 385-9801 · **Fax:** (414) 385-9803
## 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): Independent Physicians Of Wisconsin, LLC (NPI 1871975920, Milwaukee, WI); Interpedia, S.C. (NPI 1568432979, Thiensville, WI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1984
## Record status
- **NPPES last updated:** July 8, 2007
- **Other identifiers:** Medicare ID-Type Unspecified 00011824 (WI); Medicare UPIN H37922 (WI); Medicaid 34071200 (WI)
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Source: [NPI Profile](https://npiprofile.com/npi/1811094972) · Data from the CMS NPPES public registry.