MARK R. DVORAK CRNA
NPI 1699750661
Nurse Anesthetist, Certified Registered in Lake Geneva, WI
About Mark R. Dvorak Crna NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARK R. DVORAK CRNA (NPI 1699750661) is an individual nurse anesthetist, certified registered in Lake Geneva, Wisconsin, licensed in Wisconsin (104604-030) and active in the NPI registry since December 2005. He is affiliated with Mercy Walworth Hospital & Medical Center and is a graduate of Other (1986).
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 4
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Mark R. Dvorak 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mercy Walworth Hospital & Medical Center
Critical Access Hospitals · Lake Geneva, WIOther 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 Mark Dvorak's NPI number?
The NPI number for Mark Dvorak is 1699750661. It was assigned to this individual provider in the NPPES registry on December 13, 2005.
Where is Mark Dvorak located?
Mark Dvorak practices at N2950 State Road 67, Lake Geneva, WI 53147. The listed phone number is (262) 245-4990.
What is Mark Dvorak's specialty?
The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.
Is Mark Dvorak enrolled in Medicare?
Yes. Mark Dvorak 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.
Is Mark Dvorak affiliated with any hospitals?
According to CMS data, Mark Dvorak is affiliated with Mercy Walworth Hospital & Medical Center.
When was this NPI record last updated?
The NPPES record for Mark Dvorak was last updated on September 29, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 days 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.
# Mark R. Dvorak, CRNA · NPI 1699750661
Nurse Anesthetist, Certified Registered physician in Lake Geneva, Wisconsin. Individual provider, active in the CMS NPPES registry since December 13, 2005.
## Identity
- **NPI:** 1699750661 (Entity type: Individual)
- **Enumerated:** December 13, 2005
- **Primary specialty:** Nurse Anesthetist, Certified Registered · taxonomy 367500000X
- **State license:** 104604-030 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** N2950 STATE ROAD 67, Lake Geneva, WI 53147-2655
- **Phone:** (262) 245-4990 · **Fax:** (262) 245-2248
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Medical school:** Other, class of 1986
## Record status
- **NPPES last updated:** September 29, 2026
- **Other identifiers:** Other DVORAMAR (WI); Other 430067408; Medicaid 1699750661 (WI); and 1 more
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Source: [NPI Profile](https://npiprofile.com/npi/1699750661) · Data from the CMS NPPES public registry.