John B. Sempek, D.C.
Chiropractor · Ralston, NE
John B. Sempek, D.C. is a chiropractor with a practice address in Ralston, Nebraska, and NPI 1609882711, issued on Jul 31, 2006. Check the license (Nebraska 834, as entered in NPPES) with the Nebraska board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- John B. Sempek
- Credential
- D.C.
- Primary taxonomy
- Chiropractor 111N00000X
- License number
- 834 NE
Self-reported in NPPES; status is on the state search - Practice location
- 8013 L St, Ralston, NE 68127
- Phone
- (402) 592-7686
- Enumerated
- Jul 31, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (402) 592-0689
- Medicare enrollment
- Enrolled (PECOS I20110405001076); may accept Medicare assignment
- Medical or professional school
- National College Of Chiropractic, 1983
- Entity
- Type 1 · individual
8 nearest chiropractor records → All 852 in Nebraska → Look up another NPI →
Also registered at 8013 L St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Cary Holl, DCChiropractor1356439434
- Roger Madsen, D.C.Chiropractor1104832211
Verify John B. Sempek in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Nebraska board licenses this profession
Search for license 834Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Rkm Inc.Ralston, NE
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John B. Sempek among 852 chiropractor records in Nebraska
John B. Sempek, D.C. is one of 852 chiropractor records with a practice address in Nebraska. 26% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 4% of them.
- NPI issued2006 · 4% of these records are older, 65% newer
- In a Medicare fileYes · 26% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1983 · median 2010 among the 539 with a school on file
- Record last updated2007 · 70% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 111N00000X and a Nebraska practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
5 chiropractor records list a practice address in Ralston
They are 5 of the 79 NPPES records with a practice address in Ralston, and 852 chiropractor records in Nebraska.
All 852 in Nebraska → Every provider in Ralston → Chiropractor nationwide →
The 8 chiropractor records with the nearest ZIP codes
- Savannah Brox, DCOmaha, NE 681271083587794
- Jennifer Clausen, D.C.Omaha, NE 681271174561997
- Jeremy Happ, D.C.Omaha, NE 681271659317139
- Cary Holl, DCRalston, NE 681271356439434
- Abigail LinkhartOmaha, NE 681271508578592
- Roger Madsen, D.C.Ralston, NE 681271104832211
- James Malloy, DCOmaha, NE 681271831263649
- Nicole Pearson, DCRalston, NE 681271356511133
Common questions
What is John B. Sempek, D.C.'s NPI number?
John B. Sempek, D.C.'s National Provider Identifier (NPI) is 1609882711, issued on Jul 31, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John B. Sempek, D.C. located?
The NPPES record lists a practice address at 8013 L St, Ralston, NE, 68127. Phone: (402) 592-7686. Providers update this record themselves, so call before visiting.
How can I verify John B. Sempek, D.C.'s license?
NPPES lists Nebraska license number 834, as entered by the provider. Search the Nebraska board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.