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DR. DAVID M THAYER DC
NPI 1689642951
Chiropractor in Edwardsville, IL

Active since March 10, 2006Accepts Medicare Assignment
340 S FILLMORE ST, EDWARDSVILLE, IL 62025(618) 692-6700(618) 692-9772 Get Directions Write a Review

NPPES record last updated: May 11, 2015. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. David M Thayer Dc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. DAVID M THAYER DC (NPI 1689642951) is an individual chiropractor in Edwardsville, Illinois, licensed in Illinois (038009512) and active in the NPI registry since March 2006. He is a graduate of Other (2000).

NPPES Registry Identity

NPI1689642951
Entity TypeIndividualMale
Primary Taxonomy111N00000X
Provider Legal NameDR. DAVID M THAYERCredential: DC
Location Address340 S FILLMORE STEdwardsville, IL 62025-2115
Mailing AddressPo Box 997Edwardsville, IL 62025-0997 · (618) 692-6700 · Fax (618) 692-6711
Phone(618) 692-6700
Fax(618) 692-9772
Sole ProprietorYes
Medical School CMSOtherGraduated 2000
Enumeration DateMarch 10, 2006
Last NPPES UpdateMay 11, 2015
✔ NPI 1689642951 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyChiropractorChiropractic Providers
Taxonomy Code111N00000X
License✔ Licensed in IL · 038009512
Definition
A provider qualified by a Doctor of Chiropractic (D.C.), licensed by the State and who practices chiropractic medicine -that discipline within the healing arts which deals with the nervous system and its relationship to the spinal column and its interrelationship with other body systems.
340 S FILLMORE ST, Edwardsville, IL 62025
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Medica, UnitedHealthcare.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. David M Thayer Dc 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.

PECOS PAC ID4880680537
PECOS Enrollment IDI20040420001719

Medicare Billing Reassignments

2

Medicare enrollment records show David Thayer reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Integrated Medical Group Ltd
0.2 mi
Chiropractor
435 S BUCHANAN ST STE B
Edwardsville, IL 62025
  • Reassigned Medicare billing, Illinois enrollment
  • 4 clinicians in this Medicare group
NPI 1487750691 (618) 692-6700
Southern Illinois Physicians Group Ltd
30 mi
Chiropractor
203 E MAIN ST
Greenville, IL 62246
  • Reassigned Medicare billing, Illinois enrollment
  • 2 clinicians in this Medicare group
NPI 1326411927 (618) 692-6700

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 2

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.

Chiropractic manipulative treatment, 3-4 spinal regions 98941
Chiropractic manipulative treatment for 3-4 spinal regions involves a trained professional applying controlled force to specific areas of your spine. This can help alleviate pain, improve physical function, and support your body's natural healing process.
649 services88 patients
Chiropractic manipulative treatment, 1-2 spinal regions 98940
Chiropractic manipulative treatment focuses on adjusting your spine to improve your body's physical function. In this service, a chiropractor applies controlled force to 1-2 spinal regions. This helps to restore mobility and alleviate discomfort in those areas.
204 services43 patients

Other Providers at the Same Location NPPES 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

TREATMENT ALTERNATIVES FOR SAFE COMMUNITIES
Clinic/Center (Mental Health (Including Community Mental Health Center))
340 S FILLMORE ST
EDWARDSVILLE, IL 62025
Madison County (618) 656-7672
TREATMENT ALTERNATIVES FOR SAFE COMMUNITIES
Clinic/Center (Rehabilitation, Substance Use Disorder)
340 S FILLMORE ST
EDWARDSVILLE, IL 62025
Madison County (618) 656-7672

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 David Thayer's NPI number?

The NPI number for David Thayer is 1689642951. It was assigned to this individual provider in the NPPES registry on March 10, 2006.

Where is David Thayer located?

David Thayer practices at 340 S Fillmore St, Edwardsville, IL 62025. The listed phone number is (618) 692-6700.

What is David Thayer's specialty?

The primary specialty registered for this NPI is Chiropractor with taxonomy code 111N00000X.

Is David Thayer enrolled in Medicare?

Yes. David Thayer 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 David Thayer's services?

According to the CMS Revalidation Reassignment List (October 2026 release), David Thayer reassigns Medicare benefits to 2 organizations: Integrated Medical Group Ltd (Edwardsville, IL) and Southern Illinois Physicians Group Ltd (Greenville, IL). 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 David Thayer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does David Thayer accept?

Health plans from Medica and UnitedHealthcare list David Thayer 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 David Thayer was last updated on May 11, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.