MICHAEL J RICHARDSON M.D
NPI 1477589422
Family Medicine in Union, MO
About Michael J Richardson M.d NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MICHAEL J RICHARDSON M.D (NPI 1477589422) is an individual family medicine provider in Union, Missouri, licensed in Missouri (2006036186) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS, is affiliated with Mercy Hospital St Louis, and is a graduate of University Of Missouri, Columbia School Of Medicine (2005).
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
Michael J Richardson 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 Reassignment
Medicare enrollment records show Michael Richardson reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Sullivan, MO 63080
- Reassigned Medicare billing, Missouri enrollment
- Also billed through NPI 1164857397 (Missouri)
- 228 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 21
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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mercy Hospital St Louis
Acute Care Hospitals · Saint Louis, MOMercy Hospital Washington
Acute Care Hospitals · Washington, MOPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 63084 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 6
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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 Michael Richardson's NPI number?
The NPI number for Michael Richardson is 1477589422. It was assigned to this individual provider in the NPPES registry on June 23, 2006.
Where is Michael Richardson located?
Michael Richardson practices at 97 St Andrews Drive Suite 100, Union, MO 63084. The listed phone number is (636) 583-2946.
What is Michael Richardson's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Michael Richardson enrolled in Medicare?
Yes. Michael Richardson 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 Michael Richardson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Michael Richardson reassigns Medicare benefits to Mercy Clinic East Communities (Sullivan, MO). 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 Michael Richardson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Michael Richardson accept?
Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from Arkansas Health & Wellness, Ambetter from Sunflower Health Plan and Ambetter of Oklahoma and 3 other insurers list Michael Richardson 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 Michael Richardson affiliated with any hospitals?
According to CMS data, Michael Richardson is affiliated with Mercy Hospital St Louis and Mercy Hospital Washington.
When was this NPI record last updated?
The NPPES record for Michael Richardson was last updated on July 24, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.