DR. WILLIAM MICHAEL RALSTON D.O.
NPI 1417034158
Orthopaedic Surgery in Columbia, MO
About Dr. William Michael Ralston D.o. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. WILLIAM MICHAEL RALSTON D.O. (NPI 1417034158) is an individual orthopaedic surgery provider in Columbia, Missouri, licensed in Missouri (2019015416) and active in the NPI registry since November 2006. He is enrolled in Medicare PECOS, is affiliated with Chi Health - Mercy Corning, and is a graduate of Other (2001).
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. William Michael Ralston D.o. 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 William Ralston reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Creston, IA 50801
- Reassigned Medicare billing, Iowa enrollment
- 80 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.
Hospital Affiliations CMS Care Compare 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Chi Health - Mercy Corning
Critical Access Hospitals · Corning, IAAdair County Memorial Hospital
Critical Access Hospitals · Greenfield, IAClarke County Hospital
Critical Access Hospitals · Osceola, IAGreater Regional Medical Center
Critical Access Hospitals · Creston, IAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 65212 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
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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
COLUMBIA, MO 65212
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 Ralston's NPI number?
The NPI number for William Ralston is 1417034158. It was assigned to this individual provider in the NPPES registry on November 1, 2006.
Where is William Ralston located?
William Ralston practices at 1100 Virginia Ave, Columbia, MO 65212. The listed phone number is (573) 882-2663.
What is William Ralston's specialty?
The primary specialty registered for this NPI is Orthopaedic Surgery with taxonomy code 207X00000X.
Is William Ralston enrolled in Medicare?
Yes. William Ralston 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 William Ralston's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Ralston reassigns Medicare benefits to Greater Regional Medical Center (Creston, 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 William Ralston's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does William Ralston accept?
Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from NH Healthy Families, Ambetter from Sunflower Health Plan and UnitedHealthcare and 1 other insurer list William Ralston 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 William Ralston affiliated with any hospitals?
According to CMS data, William Ralston is affiliated with Chi Health - Mercy Corning, Adair County Memorial Hospital, Clarke County Hospital and Greater Regional Medical Center.
When was this NPI record last updated?
The NPPES record for William Ralston was last updated on July 19, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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. William Michael Ralston, D.O. · NPI 1417034158
Orthopaedic Surgery physician in Columbia, Missouri. Individual provider, active in the CMS NPPES registry since November 1, 2006.
## Identity
- **NPI:** 1417034158 (Entity type: Individual)
- **Enumerated:** November 1, 2006
- **Primary specialty:** Orthopaedic Surgery · taxonomy 207X00000X
- **State license:** 2019015416 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 1100 VIRGINIA AVE, Columbia, MO 65212-0001
- **Phone:** (573) 882-2663 · **Fax:** (573) 882-1760
## 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:** Greater Regional Medical Center (NPI 1902805062, Creston, IA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2001
## Record status
- **NPPES last updated:** July 19, 2019
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Source: [NPI Profile](https://npiprofile.com/npi/1417034158) · Data from the CMS NPPES public registry.