WILLIAM MARTIN M.D.
NPI 1568859874
Emergency Medicine in Cedar Rapids, IA
About William Martin M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
WILLIAM MARTIN M.D. (NPI 1568859874) is an individual emergency medicine provider in Cedar Rapids, Iowa, licensed in Iowa (MD-47407) and active in the NPI registry since April 2015. He is enrolled in Medicare PECOS and maintains a secondary practice location in Iowa City.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
William Martin M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
7Medicare enrollment records show William Martin reassigns Medicare billing to 7 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Coralville, IA 52241
- Reassigned Medicare billing, Iowa enrollment
- 2,190 clinicians in this Medicare group
Williamsburg, IA 52361
- Reassigned Medicare billing, Iowa enrollment
- Also billed through NPI 1053368191 (Iowa)
- 75 clinicians in this Medicare group
Cedar Rapids, IA 52402
- Reassigned Medicare billing, Iowa enrollment
- 45 clinicians in this Medicare group
Anamosa, IA 52205
- Reassigned Medicare billing, Iowa enrollment
- Medicare enrollment name: St Lukes Jones Regional Medical Center
- Also billed through NPI 1275015208 (Iowa)
- 56 clinicians in this Medicare group
Independence, IA 50644
- Reassigned Medicare billing, Iowa enrollment
- Medicare enrollment name: Peoples Memorial Hospital
- 91 clinicians in this Medicare group
Newton, IA 50208
- Reassigned Medicare billing, Iowa enrollment
- 110 clinicians in this Medicare group
Grundy Center, IA 50638
- Reassigned Medicare billing, Iowa enrollment
- Also billed through NPI 1821055989 (Iowa)
- 62 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 3
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 52402 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.
CEDAR RAPIDS, IA 52402
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 Martin's NPI number?
The NPI number for William Martin is 1568859874. It was assigned to this individual provider in the NPPES registry on April 24, 2015.
Where is William Martin located?
William Martin practices at 1026 A Ave NE, Cedar Rapids, IA 52402. The listed phone number is (319) 369-8600.
What is William Martin's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is William Martin enrolled in Medicare?
Yes. William Martin is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for William Martin's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Martin reassigns Medicare benefits to 7 organizations: State University Of Iowa (Coralville, IA), Marengo Memorial Hospital (Williamsburg, IA), East Central Iowa Acute Care, PLLC (Cedar Rapids, IA), St Luke's Jones Regional Medical Center (Anamosa, IA), People's Memorial Hospital (Independence, IA) and 2 more organizations, listed in the Medicare section above. 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 Martin's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does William Martin accept?
Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from NH Healthy Families, Ambetter from Sunflower Health Plan and Oscar Health and 3 other insurers list William Martin 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.
When was this NPI record last updated?
The NPPES record for William Martin was last updated on October 6, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 months 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.