Mackenzie Greisch
NPI 1104524115 · Certified Registered Nurse Anesthetist · Green Bay, WI
Enrolled with Medicare as Practitioner - Certified Registered Nurse Anesthetist (crna) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mackenzie Greisch is a Certified Registered Nurse Anesthetist provider in Green Bay, WI (NPI 1104524115).
Provider details
- NPI number
- 1104524115
- Entity type
- Individual
- Primary specialty
- Certified Registered Nurse AnesthetistPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Female
- Sole proprietor
- No
- License
- 242562 (WI)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Nursing Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
3 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
4 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
11 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Anesthesia for Other Procedure on Large Bowel Using an Endoscope00811 | 11 | $55 |
Typical Medicare-allowed amounts for these services range $55–$55 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$16 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (3)
- 1726 Shawano AveGreen Bay, WI 54303-3216Phone: (920) 498-4200
- 2900 W Oklahoma AveMilwaukee, WI 53215-4330Phone: (414) 649-6000
- 800 Algoma BlvdOshkosh, WI 54901-8610Phone: (920) 424-3114
Registry dates
- Enumerated
- 2023-02-20
- Last updated
- 2023-06-05
- Certified
- 2023-06-05
Frequently asked questions
- What is Mackenzie Greisch's NPI number?
- Mackenzie Greisch's National Provider Identifier (NPI) is 1104524115, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mackenzie Greisch's specialty?
- Mackenzie Greisch is listed in the NPPES registry with a primary specialty of Certified Registered Nurse Anesthetist (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Mackenzie Greisch located?
- Mackenzie Greisch's practice location on file with NPPES is 835 S Van Buren St, Green Bay, WI 54301-3526.
- What is Mackenzie Greisch's phone number?
- The practice phone number listed in the NPPES registry for Mackenzie Greisch is (920) 433-0111.
- Does Mackenzie Greisch accept Medicare?
- Mackenzie Greisch is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mackenzie Greisch's NPI active?
- Yes — Mackenzie Greisch's NPI (1104524115) is active in the NPPES registry as of the last update on 2023-06-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.