MARISSA J HERNANDEZ CRNA
NPI 1104164417
Nurse Anesthetist, Certified Registered in Wausau, WI
About Marissa J Hernandez Crna NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARISSA J HERNANDEZ CRNA (NPI 1104164417) is an individual nurse anesthetist, certified registered in Wausau, Wisconsin, licensed in Wisconsin (8629-33) and active in the NPI registry since January 2013. She is enrolled in Medicare PECOS and is a graduate of Other (2012).
NPPES Registry Identity
Specialties & Licenses
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
Marissa J Hernandez Crna 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
3Medicare enrollment records show Marissa Hernandez reassigns Medicare billing to 3 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
- 54 clinicians in this Medicare group
Wausau, WI 54403
- Reassigned Medicare billing, Wisconsin enrollment
- 13 clinicians in this Medicare group
Marshfield, WI 54449
- Reassigned Medicare billing, Wisconsin enrollment
- 2,540 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 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.
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.
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 Marissa Hernandez's NPI number?
The NPI number for Marissa Hernandez is 1104164417. It was assigned to this individual provider in the NPPES registry on January 21, 2013.
Where is Marissa Hernandez located?
Marissa Hernandez practices at 411 Westwood Dr, Wausau, WI 54401. The listed phone number is (715) 847-2558.
What is Marissa Hernandez's specialty?
The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.
Is Marissa Hernandez enrolled in Medicare?
Yes. Marissa Hernandez 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 Marissa Hernandez's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Marissa Hernandez reassigns Medicare benefits to 3 organizations: Gastrointestinal Associates S.C. (Wausau, WI), Midwest Alliance Services LLC (Wausau, WI) and Marshfield Clinic 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 Marissa Hernandez's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Marissa Hernandez accept?
Health plans from Anthem Blue Cross and Blue Shield list Marissa Hernandez 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 Marissa Hernandez was last updated on August 21, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.
# Marissa J Hernandez, CRNA · NPI 1104164417
Nurse Anesthetist, Certified Registered physician in Wausau, Wisconsin. Individual provider, active in the CMS NPPES registry since January 21, 2013.
## Identity
- **NPI:** 1104164417 (Entity type: Individual)
- **Enumerated:** January 21, 2013
- **Primary specialty:** Nurse Anesthetist, Certified Registered · taxonomy 367500000X
- **State license:** 8629-33 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** 411 WESTWOOD DR, Wausau, WI 54401
- **Phone:** (715) 847-2558 · **Fax:** (715) 847-2557
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Gastrointestinal Associates S.C. (NPI 1760546949, Wausau, WI); Midwest Alliance Services LLC (NPI 1336612795, Wausau, WI); Marshfield Clinic Inc (NPI 1952347981, Marshfield, WI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2012
## Record status
- **NPPES last updated:** August 21, 2018
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Source: [NPI Profile](https://npiprofile.com/npi/1104164417) · Data from the CMS NPPES public registry.