Gregory B. Cook, DC
Chiropractor · Lake In The Hills, IL
Gregory B. Cook, DC is a chiropractor with a practice address in Lake In The Hills, Illinois, and NPI 1689628562, issued on May 22, 2006. Check the license (Illinois 038008183, as entered in NPPES) with the Illinois board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Gregory B. Cook
- Credential
- DC
- Primary taxonomy
- Chiropractor 111N00000X
- License number
- 038008183 IL
Self-reported in NPPES; status is on the state search - Practice location
- 61 Polaris Dr, Lake In The Hills, IL 60156
- Phone
- (815) 356-6200
- Enumerated
- May 22, 2006
- Record last updated
- Oct 14, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (224) 509-8068
- Medicare enrollment
- Enrolled (PECOS I20230609001421); accepts Medicare assignment
- Medical or professional school
- Palmer College Chiropractic - Davenport, 1997
- Entity
- Type 1 · individual
8 nearest chiropractor records → All 4,524 in Illinois → Look up another NPI →
Also registered at 61 Polaris Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Robert Hollett, DCChiropractor1417957184
Verify Gregory B. Cook in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 038008183Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Gregory B. Cook among 4,524 chiropractor records in Illinois
Gregory B. Cook, DC is one of 4,524 chiropractor records with a practice address in Illinois. 17% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 60% newer
- In a Medicare fileNo · 17% of these records are
- In the CMS Doctors and Clinicians fileYes · 42% of these records are
- Graduated1997 · median 2004 among the 1,912 with a school on file
- Record last updated2016 · 77% 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 Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
14 chiropractor records list a practice address in Lake In The Hills
They are 14 of the 316 NPPES records with a practice address in Lake In The Hills, and 4,524 chiropractor records in Illinois. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 4,524 in Illinois → Every provider in Lake In The Hills → Chiropractor nationwide →
The 8 chiropractor records with the nearest ZIP codes
- Lauren Biestek, DCLake In The Hills, IL 601561508330416
- Sherry Bresnahan, D.C.Lake In The Hills, IL 601561336379882
- Elizabeth Eyles, D.CLake In The Hills, IL 601561598103483
- Sebastian Fuksa, DCLake In The Hills, IL 601561821178401
- Anthony Gioia, D.C.Lake In The Hills, IL 601561356340772
- Jennifer Hallum, DCLake In The Hills, IL 601561871656124
- Ryan Hallum, D.C.Lake In The Hills, IL 601561245393560
- Robert Hollett, DCLake In The Hills, IL 601561417957184
Common questions
What is Gregory B. Cook, DC's NPI number?
Gregory B. Cook, DC's National Provider Identifier (NPI) is 1689628562, issued on May 22, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gregory B. Cook, DC located?
The NPPES record lists a practice address at 61 Polaris Dr, Lake In The Hills, IL, 60156. Phone: (815) 356-6200. Providers update this record themselves, so call before visiting.
How can I verify Gregory B. Cook, DC's license?
NPPES lists Illinois license number 038008183, as entered by the provider. Search the Illinois 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. 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.