Mercy Health System Corporation
NPI 1851327639 · Pharmacy · Lake Geneva, WI
Enrolled with Medicare as Dme Supplier - Pharmacy · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mercy Health System Corporation is a Pharmacy organization in Lake Geneva, WI (NPI 1851327639).
Provider details
- NPI number
- 1851327639
- Entity type
- Organization
- Primary specialty
- PharmacySuppliers
- Parent organization
- Mercy Health System
- Organization subpart
- Yes
- Authorized official
- Don Janczak, Director of Pharmacy(608) 756-6664
Specialties & taxonomies
Suppliers
- Community/Retail Pharmacy3336C0003X
Suppliers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
250 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Administration of Influenza Virus VaccineG0008 | 134 | $14 |
| Admn Sarscov2 Vacc 1 Dose90480 | 116 | $18 |
Typical Medicare-allowed amounts for these services range $14–$18 (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.
Practice location
Mailing address
Other names (DBA / former)
- Doing business as
- Mercy Walworth Pharmacy
- Doing business as
- Mercy Walworth Pharmacy
Registry dates
- Enumerated
- 2006-06-24
- Last updated
- 2023-09-27
- Certified
- 2023-09-27
Frequently asked questions
- What is Mercy Health System Corporation's NPI number?
- Mercy Health System Corporation's National Provider Identifier (NPI) is 1851327639, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Mercy Health System Corporation?
- Mercy Health System Corporation is classified in the NPPES registry as Pharmacy (Suppliers).
- Where is Mercy Health System Corporation located?
- Mercy Health System Corporation's practice location on file with NPPES is N2950 State Road 67, Lake Geneva, WI 53147-2655.
- What is Mercy Health System Corporation's phone number?
- The practice phone number listed in the NPPES registry for Mercy Health System Corporation is (262) 245-2319.
- Does Mercy Health System Corporation accept Medicare?
- Mercy Health System Corporation is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Mercy Health System Corporation?
- The authorized official listed on Mercy Health System Corporation's NPPES record is Don Janczak, Director of Pharmacy. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Mercy Health System Corporation's NPI active?
- Yes — Mercy Health System Corporation's NPI (1851327639) is active in the NPPES registry as of the last update on 2023-09-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.