ANNE MARGARET B HERNAEZ MD
NPI 1215517578
Family Medicine in Wausau, WI
About Anne Margaret B Hernaez Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ANNE MARGARET B HERNAEZ MD (NPI 1215517578) is an individual family medicine provider in Wausau, Wisconsin, licensed in Wisconsin (85220) and active in the NPI registry since April 2021. She is enrolled in Medicare PECOS, is affiliated with Marshfield Medical Center, and maintains a secondary practice location in Madisonville.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
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
Anne Margaret B Hernaez 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 Anne Margaret Hernaez reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Wausau, WI 54401
- Reassigned Medicare billing, Wisconsin enrollment
- Also billed through NPI 1952890873 (Wisconsin)
- 2,476 clinicians in this Medicare group
Marshfield, WI 54449
- Reassigned Medicare billing, Wisconsin enrollment
- 2,540 clinicians in this Medicare group
Neillsville, WI 54456
- Reassigned Medicare billing, Wisconsin enrollment
- Also billed through NPI 1346239373 (Wisconsin)
- 1,283 clinicians in this Medicare group
Park Falls, WI 54552
- Reassigned Medicare billing, Wisconsin enrollment
- Also billed through NPI 1700963048 (Wisconsin)
- 1,351 clinicians in this Medicare group
Chetek, WI 54728
- Reassigned Medicare billing, Wisconsin enrollment
- 1,616 clinicians in this Medicare group
Waupun, WI 53963
- Reassigned Medicare billing, Wisconsin enrollment
- 1,447 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.
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 - Minocqua
Acute Care Hospitals · Minocqua, WIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 54401 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.
WAUSAU, WI 54401
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 Anne Margaret Hernaez's NPI number?
The NPI number for Anne Margaret Hernaez is 1215517578. It was assigned to this individual provider in the NPPES registry on April 12, 2021.
Where is Anne Margaret Hernaez located?
Anne Margaret Hernaez practices at 2727 Plaza Dr, Wausau, WI 54401. The listed phone number is (715) 847-3000.
What is Anne Margaret Hernaez's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Anne Margaret Hernaez enrolled in Medicare?
Yes. Anne Margaret Hernaez 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 Anne Margaret Hernaez's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Anne Margaret Hernaez reassigns Medicare benefits to 6 organizations: Mchs Hospitals Inc (Wausau, WI), Marshfield Clinic Inc (Marshfield, WI), Memorial Hospital, Inc (Neillsville, WI), Flambeau Hospital Inc (Park Falls, WI), Lakeview Medical Center Inc Of Rice Lake (Chetek, 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 Anne Margaret Hernaez's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Anne Margaret Hernaez accept?
Health plans from Anthem Blue Cross and Blue Shield, HealthPartners and Security Health Plan list Anne Margaret Hernaez 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 Anne Margaret Hernaez affiliated with any hospitals?
According to CMS data, Anne Margaret Hernaez is affiliated with Marshfield Medical Center, Marshfield Medical Center - Weston and Marshfield Medical Center - Minocqua.
When was this NPI record last updated?
The NPPES record for Anne Margaret Hernaez was last updated on October 29, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.
# Anne Margaret B Hernaez, MD · NPI 1215517578
Family Medicine physician in Wausau, Wisconsin. Individual provider, active in the CMS NPPES registry since April 12, 2021.
## Identity
- **NPI:** 1215517578 (Entity type: Individual)
- **Enumerated:** April 12, 2021
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** 85220 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** 2727 PLAZA DR, Wausau, WI 54401-4192
- **Phone:** (715) 847-3000
## 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:** 6 organizations under Medicare reassignment (form CMS-855R): Mchs Hospitals Inc (NPI 1164159109, Wausau, WI); Marshfield Clinic Inc (NPI 1952347981, Marshfield, WI); Memorial Hospital, Inc (NPI 1679746747, Neillsville, WI); Flambeau Hospital Inc (NPI 1194317966, Park Falls, WI); Lakeview Medical Center Inc Of Rice Lake (NPI 1659008605, Chetek, WI); and 1 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2019
## Record status
- **NPPES last updated:** October 29, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1215517578) · Data from the CMS NPPES public registry.