DR. THOMAS EDWIN WILLIAMS D.O.
NPI 1659479061
Family Medicine in Milan, MO
About Dr. Thomas Edwin Williams D.o. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. THOMAS EDWIN WILLIAMS D.O. (NPI 1659479061) is an individual family medicine provider in Milan, Missouri, licensed in Missouri (109395) and active in the NPI registry since September 2006. He is enrolled in Medicare PECOS, is affiliated with Northeast Regional Medical Center, and is a graduate of Other (1990).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 4
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. Thomas Edwin Williams 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 Reassignments
2Medicare enrollment records show Thomas Williams reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Milan, MO 63556
- Reassigned Medicare billing, Missouri enrollment
- Also billed through NPI 1114067832 (Missouri)
- 20 clinicians in this Medicare group
Unionville, MO 63565
- Reassigned Medicare billing, Missouri enrollment
- Also billed through NPI 1124125539 (Missouri)
- 16 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 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Northeast Regional Medical Center
Acute Care Hospitals · Kirksville, MOPutnam County Memorial Hospital
Critical Access Hospitals · Unionville, MOSullivan County Memorial Hospital
Critical Access Hospitals · Milan, MOPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 63556 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 8
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 10
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
MILAN, MO 63556
MILAN, MO 63556
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 Thomas Williams's NPI number?
The NPI number for Thomas Williams is 1659479061. It was assigned to this individual provider in the NPPES registry on September 20, 2006.
Where is Thomas Williams located?
Thomas Williams practices at 630 W 3rd St, Milan, MO 63556. The listed phone number is (660) 265-4212.
What is Thomas Williams's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Thomas Williams enrolled in Medicare?
Yes. Thomas Williams 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 Thomas Williams's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Thomas Williams reassigns Medicare benefits to 2 organizations: Sullivan County Memorial Hospital (Milan, MO) and Putnam County Memorial Hospital (Unionville, MO). 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 Thomas Williams's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Thomas Williams 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 4 other insurers list Thomas Williams 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 Thomas Williams affiliated with any hospitals?
According to CMS data, Thomas Williams is affiliated with Northeast Regional Medical Center, Putnam County Memorial Hospital and Sullivan County Memorial Hospital.
When was this NPI record last updated?
The NPPES record for Thomas Williams was last updated on January 9, 2009. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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. Thomas Edwin Williams, D.O. · NPI 1659479061
Family Medicine physician in Milan, Missouri. Individual provider, active in the CMS NPPES registry since September 20, 2006.
## Identity
- **NPI:** 1659479061 (Entity type: Individual)
- **Enumerated:** September 20, 2006
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** 109395 (Missouri)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 630 W 3RD ST, Milan, MO 63556-1076
- **Phone:** (660) 265-4212
## 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): Sullivan County Memorial Hospital (NPI 1063553642, Milan, MO); Putnam County Memorial Hospital (NPI 1609870195, Unionville, MO) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1990
## Record status
- **NPPES last updated:** January 9, 2009
- **Other identifiers:** Medicare UPIN F41079 (MO); Medicaid 243662434 (MO); Medicare PIN MA1231015 (MO); and 1 more
---
Source: [NPI Profile](https://npiprofile.com/npi/1659479061) · Data from the CMS NPPES public registry.