DR. WILLIAM J WITCIK M.D,
NPI 1619956547
Internal Medicine - Cardiovascular Disease in Davenport, IA
About Dr. William J Witcik M.d, NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. WILLIAM J WITCIK M.D, (NPI 1619956547) is an individual cardiovascular disease provider in Davenport, Iowa, licensed in Iowa (MD-29219) and active in the NPI registry since January 2006. He is enrolled in Medicare PECOS, is affiliated with Genesis Hlth System Dba Genesis Mdl Ctr-illini, and is a graduate of University Of North Dakota School Of Medicine (1986).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 2
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
Dr. William J Witcik M.d, 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
4Medicare enrollment records show William Witcik reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Davenport, IA 52803
- Reassigned Medicare billing, Iowa and Illinois enrollments
- 55 clinicians in this Medicare group
Davenport, IA 52803
- Reassigned Medicare billing, Iowa enrollment
- Also billed through NPI 1649368523 (Iowa)
- 300 clinicians in this Medicare group
Davenport, IA 52807
- Reassigned Medicare billing, Iowa and Illinois enrollments
- Also billed through NPI 1033163829 (Illinois)
- 138 clinicians in this Medicare group
De Witt, IA 52742
- Reassigned Medicare billing, Iowa enrollment
- 183 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 37
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.
Hospital Affiliations CMS Care Compare 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Genesis Hlth System Dba Genesis Mdl Ctr-Illini
Acute Care Hospitals · Silvis, ILHammond Henry Hospital
Critical Access Hospitals · Geneseo, ILGenesis Medical Center-Davenport
Acute Care Hospitals · Davenport, IAMercyone Clinton Medical Center
Acute Care Hospitals · Clinton, IAGenesis Medical Center-Dewitt
Critical Access Hospitals · Dewitt, IAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 52803 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.
DAVENPORT, IA 52803
DAVENPORT, IA 52803
DAVENPORT, IA 52803
DAVENPORT, IA 52803
DAVENPORT, IA 52803
DAVENPORT, IA 52803
DAVENPORT, IA 52803
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 William Witcik's NPI number?
The NPI number for William Witcik is 1619956547. It was assigned to this individual provider in the NPPES registry on January 10, 2006.
Where is William Witcik located?
William Witcik practices at 1236 E Rusholme St Suite 300, Davenport, IA 52803. The listed phone number is (563) 324-2992.
What is William Witcik's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.
Is William Witcik enrolled in Medicare?
Yes. William Witcik 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 William Witcik's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Witcik reassigns Medicare benefits to 4 organizations: Cardiovascular Medicine PLLC (Davenport, IA), Genesis Health System (Davenport, IA), Trinity Medical Center (Davenport, IA) and Mercy Specialty Clinic (De Witt, IA). 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 William Witcik's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does William Witcik accept?
Health plans from Oscar Health, Oscar Insurance Company and Wellmark Health Plan of Iowa, Inc. list William Witcik 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 William Witcik affiliated with any hospitals?
According to CMS data, William Witcik is affiliated with Genesis Hlth System Dba Genesis Mdl Ctr-Illini, Hammond Henry Hospital, Genesis Medical Center-Davenport, Mercyone Clinton Medical Center and Genesis Medical Center-Dewitt.
When was this NPI record last updated?
The NPPES record for William Witcik was last updated on February 11, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.