DR. CASE CALVIN EVERETT MD
NPI 1144481441
Family Medicine in Ottumwa, IA
About Dr. Case Calvin Everett Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. CASE CALVIN EVERETT MD (NPI 1144481441) is an individual family medicine provider in Ottumwa, Iowa, licensed in Iowa (38572) and active in the NPI registry since June 2008. He is enrolled in Medicare PECOS, is affiliated with Mercyone Des Moines Medical Center, and maintains a secondary practice location in Ottumwa.
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 and accepts Medicare assignment
Dr. Case Calvin Everett Md 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 Reassignment
Medicare enrollment records show Case Everett reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Ottumwa, IA 52501
- Reassigned Medicare billing, Iowa enrollment
- 86 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 2
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.
Mercyone Des Moines Medical Center
Acute Care Hospitals · Des Moines, IAOttumwa Regional Health Center
Acute Care Hospitals · Ottumwa, IADavis County Hospital
Critical Access Hospitals · Bloomfield, IAJefferson County Health Center
Critical Access Hospitals · Fairfield, IAMahaska Health Partnership
Critical Access Hospitals · Oskaloosa, IAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 52501 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 2
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 5
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
OTTUMWA, IA 52501
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 Case Everett's NPI number?
The NPI number for Case Everett is 1144481441. It was assigned to this individual provider in the NPPES registry on June 19, 2008.
Where is Case Everett located?
Case Everett practices at 1009 Pennsylvania Ave, Ottumwa, IA 52501. The listed phone number is (416) 836-6868.
What is Case Everett's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Case Everett enrolled in Medicare?
Yes. Case Everett 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 organization bills Medicare for Case Everett's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Case Everett reassigns Medicare benefits to Ottumwa Health Group LLC (Ottumwa, IA). The 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 Case Everett's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Case Everett accept?
Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from NH Healthy Families, Ambetter from Sunflower Health Plan and Wellmark Health Plan of Iowa, Inc. list Case Everett 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 Case Everett affiliated with any hospitals?
According to CMS data, Case Everett is affiliated with Mercyone Des Moines Medical Center, Ottumwa Regional Health Center, Davis County Hospital, Jefferson County Health Center and Mahaska Health Partnership.
When was this NPI record last updated?
The NPPES record for Case Everett was last updated on June 15, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.
# Dr. Case Calvin Everett, MD · NPI 1144481441
Family Medicine physician in Ottumwa, Iowa. Individual provider, active in the CMS NPPES registry since June 19, 2008.
## Identity
- **NPI:** 1144481441 (Entity type: Individual)
- **Enumerated:** June 19, 2008
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** 38572 (Iowa)
- **Sole proprietor:** No
## Practice location
- **Address:** 1009 PENNSYLVANIA AVE, Ottumwa, IA 52501-2108
- **Phone:** (416) 836-6868 · **Fax:** (641) 683-6869
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Ottumwa Health Group LLC (NPI 1639861990, Ottumwa, IA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2008
## Record status
- **NPPES last updated:** June 15, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1144481441) · Data from the CMS NPPES public registry.