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DR. THOMAS A SIWA D.C.
NPI 1770665895
Chiropractor in Omaha, NE

Active since October 19, 2006
5148 N 90TH ST, OMAHA, NE 68134(402) 933-2273(402) 502-9255 Get Directions Write a Review

NPPES record last updated: July 9, 2007. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Dr. Thomas A Siwa D.c. NPPES

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

DR. THOMAS A SIWA D.C. (NPI 1770665895) is an individual chiropractor in Omaha, Nebraska, licensed in Nebraska (1110) and active in the NPI registry since October 2006.

NPPES Registry Identity

NPI1770665895
Entity TypeIndividualMale
Primary Taxonomy111N00000X
Provider Legal NameDR. THOMAS A SIWACredential: D.C.
Location Address5148 N 90TH STOmaha, NE 68134-2830
Mailing Address5148 N 90th StOmaha, NE 68134-2830 · (402) 933-2273 · Fax (402) 502-9255
Phone(402) 933-2273
Fax(402) 502-9255
Sole ProprietorNo
Enumeration DateOctober 19, 2006
Last NPPES UpdateJuly 9, 2007
✔ NPI 1770665895 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyChiropractorChiropractic Providers
Taxonomy Code111N00000X
License✔ Licensed in NE · 1110
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.
5148 N 90TH ST, Omaha, NE 68134
Open in Google Maps ↗

Other Identifiers 5

Medicare ID-Type Unspecified277387NE · Nebraska Medicare
Other612846NE · United Healthcare
Other99529NE · Nebraska Bluecross/bluesh
Medicare UPINU55515NE
Medicaid100250829-00NE

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Thomas A Siwa D.c. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Medicare Billing Reassignment

Medicare enrollment records show Thomas Siwa reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Northwest Chiropractic P.C.
Same address
Chiropractor
5148 N 90TH ST
Omaha, NE 68134
  • Reassigned Medicare billing, Nebraska enrollment
  • Medicare enrollment name: Northwest Chiropractic PC
  • 2 clinicians in this Medicare group
NPI 1023190154 (402) 933-2273

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Other Providers at the Same Location NPPES 3

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

DR. JEFFREY P KRABBE D.C.
Chiropractor
5148 N 90TH ST
OMAHA, NE 68134
Douglas County (402) 933-2273
NORTHWEST CHIROPRACTIC P.C.
Chiropractor
5148 N 90TH ST
OMAHA, NE 68134
Douglas County (402) 933-2273
DR. SAYLER JEREL BOYLAN D.C.
Chiropractor
5148 N 90TH ST
OMAHA, NE 68134
Douglas County (402) 933-2273

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 Siwa's NPI number?

The NPI number for Thomas Siwa is 1770665895. It was assigned to this individual provider in the NPPES registry on October 19, 2006.

Where is Thomas Siwa located?

Thomas Siwa practices at 5148 N 90th St, Omaha, NE 68134. The listed phone number is (402) 933-2273.

What is Thomas Siwa's specialty?

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

Is Thomas Siwa enrolled in Medicare?

Yes. Thomas Siwa is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Thomas Siwa's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Thomas Siwa reassigns Medicare benefits to Northwest Chiropractic P.C. (Omaha, NE). 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 Thomas Siwa's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Thomas Siwa was last updated on July 9, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.