COREY THOMPSON M.D.
NPI 1932526217
Psychiatry & Neurology - Psychiatry in Mason City, IA
About Corey Thompson M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
COREY THOMPSON M.D. (NPI 1932526217) is an individual psychiatry provider in Mason City, Iowa, licensed in Iowa (MD-47861) and active in the NPI registry since March 2014. He is enrolled in Medicare PECOS, is affiliated with Mercyone North Iowa Medical Center, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 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
Corey Thompson 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
2Medicare enrollment records show Corey Thompson reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Mason City, IA 50401
- Reassigned Medicare billing, Iowa enrollment
- 65 clinicians in this Medicare group
Mason City, IA 50401
- Reassigned Medicare billing, Iowa enrollment
- 420 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 7
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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mercyone North Iowa Medical Center
Acute Care Hospitals · Mason City, IAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 50401 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.
MASON CITY, IA 50401
MASON CITY, IA 50401
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 Corey Thompson's NPI number?
The NPI number for Corey Thompson is 1932526217. It was assigned to this individual provider in the NPPES registry on March 24, 2014.
Where is Corey Thompson located?
Corey Thompson practices at 250 S Crescent Dr, Mason City, IA 50401. The listed phone number is (641) 494-5200.
What is Corey Thompson's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.
Is Corey Thompson enrolled in Medicare?
Yes. Corey Thompson 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 Corey Thompson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Corey Thompson reassigns Medicare benefits to 2 organizations: Mason City Clinic PC (Mason City, IA) and North Iowa Mercy Clinics (Mason City, 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 Corey Thompson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Corey Thompson accept?
Health plans from Ambetter Health, Ambetter from Sunflower Health Plan, Medica, Oscar Health and Oscar Insurance Company and 2 other insurers list Corey Thompson 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 Corey Thompson affiliated with any hospitals?
According to CMS data, Corey Thompson is affiliated with Mercyone North Iowa Medical Center.
When was this NPI record last updated?
The NPPES record for Corey Thompson was last updated on January 14, 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.
# Corey Thompson, M.D. · NPI 1932526217
Psychiatry physician in Mason City, Iowa. Individual provider, active in the CMS NPPES registry since March 24, 2014.
## Identity
- **NPI:** 1932526217 (Entity type: Individual)
- **Enumerated:** March 24, 2014
- **Primary specialty:** Psychiatry & Neurology - Psychiatry · taxonomy 2084P0800X
- **State license:** MD-47861 (Iowa)
- **Sole proprietor:** No
## Practice location
- **Address:** 250 S CRESCENT DR, Mason City, IA 50401-2926
- **Phone:** (641) 494-5200
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Mason City Clinic PC (NPI 1043254055, Mason City, IA); North Iowa Mercy Clinics (NPI 1801147269, Mason City, IA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2014
## Record status
- **NPPES last updated:** January 14, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1932526217) · Data from the CMS NPPES public registry.