DR. BRETT ALLEN CORNISH D.C.
NPI 1548404007
Chiropractor in Mason City, IA
About Dr. Brett Allen Cornish D.c. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. BRETT ALLEN CORNISH D.C. (NPI 1548404007) is an individual chiropractor in Mason City, Iowa, licensed in Iowa (007195) and active in the NPI registry since April 2009. He is a graduate of Palmer College Chiropractic - Davenport (2009).
NPPES Registry Identity
Specialties & Licenses
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. Brett Allen Cornish D.c. 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 Brett Cornish reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Mason City, IA 50401
- Reassigned Medicare billing, Iowa enrollment
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
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.
Other Providers at the Same Location NPPES
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 Brett Cornish's NPI number?
The NPI number for Brett Cornish is 1548404007. It was assigned to this individual provider in the NPPES registry on April 28, 2009.
Where is Brett Cornish located?
Brett Cornish practices at 1911 4th St SW Suite C, Mason City, IA 50401. The listed phone number is (641) 201-1028.
What is Brett Cornish's specialty?
The primary specialty registered for this NPI is Chiropractor with taxonomy code 111N00000X.
Is Brett Cornish enrolled in Medicare?
Yes. Brett Cornish 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 Brett Cornish's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Brett Cornish reassigns Medicare benefits to Cornish Family Chiropractic LLC (Mason City, 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 Brett Cornish's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Brett Cornish accept?
Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from NH Healthy Families, Ambetter from Sunflower Health Plan and Oscar Insurance Company and 1 other insurer list Brett Cornish 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 Brett Cornish was last updated on October 3, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.
# Dr. Brett Allen Cornish, D.C. · NPI 1548404007
Chiropractor provider in Mason City, Iowa. Individual provider, active in the CMS NPPES registry since April 28, 2009.
## Identity
- **NPI:** 1548404007 (Entity type: Individual)
- **Enumerated:** April 28, 2009
- **Primary specialty:** Chiropractor · taxonomy 111N00000X
- **State license:** 007195 (Iowa)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 1911 4TH ST SW, SUITE C, Mason City, IA 50401-4619
- **Phone:** (641) 201-1028
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Bills Medicare through:** Cornish Family Chiropractic LLC (NPI 1740536143, Mason City, IA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Palmer College Chiropractic - Davenport, class of 2009
## Record status
- **NPPES last updated:** October 3, 2014
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Source: [NPI Profile](https://npiprofile.com/npi/1548404007) · Data from the CMS NPPES public registry.