Dennis John Gates, MD
Orthopaedic Surgery Physician · Chicago, IL
Dennis John Gates, MD is an orthopaedic surgery physician with a practice address in Chicago, Illinois, and NPI 1124212279, issued on Aug 31, 2007. Check the license (Illinois 3640528, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Dennis John Gates
- Credential
- MD
- Primary taxonomy
- Orthopaedic Surgery Physician 207X00000X
- License number
- 3640528 IL
Self-reported in NPPES; status is on the state search - Practice location
- 6921 W Archer Ave, Chicago, IL 60638
- Phone
- (773) 586-5950
- Enumerated
- Aug 31, 2007
- Record last updated
- Aug 31, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (773) 586-2780
- Entity
- Type 1 · individual
8 nearest orthopaedic surgery physician records → All 995 in Illinois → Look up another NPI →
Also registered at 6921 W Archer Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Dennis John Gates in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 3640528Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Dennis John Gates among 995 orthopaedic surgery physician records in Illinois
Dennis John Gates, MD is one of 995 orthopaedic surgery physician records with a practice address in Illinois. 77% 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 2007, is newer than 51% of them.
- NPI issued2007 · 51% of these records are older, 43% newer
- In a Medicare fileNo · 77% of these records are
- In the CMS Doctors and Clinicians fileNo · 56% of these records are
- Record last updated2007 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207X00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Orthopaedic Surgery Physician providers in Illinois
There are 995 orthopaedic surgery physician records in Illinois. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 995 in Illinois → Every provider in Chicago → Orthopaedic Surgery Physician nationwide →
The 8 orthopaedic surgery physician records with the nearest ZIP codes
- Spencer Brown, MDChicago, IL 606371376385625
- Tony Da Lomba, MDChicago, IL 606371851039176
- D'Andrew Gursay, MDChicago, IL 606371154014025
- Cadence LeeChicago, IL 606371871427252
- Nicholas Lin, MDChicago, IL 606371336942564
- Daniel MarksChicago, IL 606371477137917
- Pouyan Mofidi Nasab, MDChicago, IL 606371871434597
- Kole Niemi, MDChicago, IL 606371871281410
Common questions
What is Dennis John Gates, MD's NPI number?
Dennis John Gates, MD's National Provider Identifier (NPI) is 1124212279, issued on Aug 31, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Dennis John Gates, MD located?
The NPPES record lists a practice address at 6921 W Archer Ave, Chicago, IL, 60638. Phone: (773) 586-5950. Providers update this record themselves, so call before visiting.
How can I verify Dennis John Gates, MD's license?
NPPES lists Illinois license number 3640528, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
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.