JEFFREY S SYKES M.D.
NPI 1649244682
Internal Medicine - Cardiovascular Disease in Sioux City, IA
About Jeffrey S Sykes M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JEFFREY S SYKES M.D. (NPI 1649244682) is an individual cardiovascular disease provider in Sioux City, Iowa, licensed in Iowa (MD-33097) and active in the NPI registry since February 2006. He is enrolled in Medicare PECOS, is affiliated with St Lukes Regional Medical Center, and is a graduate of Michigan State University College Of Human Medicine (1993).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 4
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
Jeffrey S Sykes 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
3Medicare enrollment records show Jeffrey Sykes reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Sioux City, IA 51104
- Reassigned Medicare billing, Iowa enrollment
- 281 clinicians in this Medicare group
Ida Grove, IA 51445
- Reassigned Medicare billing, Iowa enrollment
- 39 clinicians in this Medicare group
Hartley, IA 51346
- Reassigned Medicare billing, Iowa enrollment
- 176 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 11
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 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
St Lukes Regional Medical Center
Acute Care Hospitals · Sioux City, IAHorn Memorial Hospital
Critical Access Hospitals · Ida Grove, IACherokee Regional Medical Center
Critical Access Hospitals · Cherokee, IABuena Vista Regional Medical Center
Critical Access Hospitals · Storm Lake, IAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 51106 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims 10
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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.
SIOUX CITY, IA 51106
SIOUX CITY, IA 51106
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 Jeffrey Sykes's NPI number?
The NPI number for Jeffrey Sykes is 1649244682. It was assigned to this individual provider in the NPPES registry on February 15, 2006.
Where is Jeffrey Sykes located?
Jeffrey Sykes practices at 5885 Sunnybrook Dr Suite L-200, Sioux City, IA 51106. The listed phone number is (712) 239-4702.
What is Jeffrey Sykes's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.
Is Jeffrey Sykes enrolled in Medicare?
Yes. Jeffrey Sykes 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 Jeffrey Sykes's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Jeffrey Sykes reassigns Medicare benefits to 3 organizations: Northwest Iowa Hospital Corporation (Sioux City, IA), Ida County Iowa Community Hospital (Ida Grove, IA) and Spencer Municipal Hospital (Hartley, 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 Jeffrey Sykes's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Jeffrey Sykes accept?
Health plans from Avera Health Plans, Oscar Insurance Company, Sanford Health Plan and Wellmark Health Plan of Iowa, Inc. list Jeffrey Sykes 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 Jeffrey Sykes affiliated with any hospitals?
According to CMS data, Jeffrey Sykes is affiliated with St Lukes Regional Medical Center, Horn Memorial Hospital, Cherokee Regional Medical Center and Buena Vista Regional Medical Center.
When was this NPI record last updated?
The NPPES record for Jeffrey Sykes was last updated on October 15, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.