Dennis James McDowell, D.D.S.
Dentist · Crystal Lake, IL
Dennis James McDowell, D.D.S. is a dentist with a practice address in Crystal Lake, Illinois, and NPI 1720150097, issued on Nov 14, 2006. Check the license with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Dennis James McDowell
- Credential
- D.D.S.
- Primary taxonomy
- Dentist 122300000X
- Practice location
- 690 N IL Route 31, Crystal Lake, IL 60012
- Phone
- (815) 455-6120
- Enumerated
- Nov 14, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (815) 455-7024
- Entity
- Type 1 · individual
8 nearest dentist records → All 4,522 in Illinois → Look up another NPI →
Also registered at 690 N IL Route 31
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Fred Fitzpatrick, D.D.S.Pediatric Dentistry1063526796
- Jack Harris, DMDOral and Maxillofacial Surgery (Dentist)1427706035
- Thomas Kopp, DDS.Dentist1528144607
- Candace Opon, D.D.S.General Practice Dentistry1053603365
Verify Dennis James McDowell in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
62% fewer Medicare Part D claims than the average dentist in 2024
33 Medicare Part D claims for 18 beneficiaries, against an average of 86 among the 51,021 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Amoxicillin18 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Dennis James McDowell among 4,522 dentist records in Illinois
Dennis James McDowell, D.D.S. is one of 4,522 dentist records with a practice address in Illinois. 64% 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 2% of them.
- NPI issued2006 · 2% of these records are older, 81% newer
- In a Medicare fileYes · 64% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2007 · 74% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 122300000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
19 dentist records list a practice address in Crystal Lake
They are 19 of the 1,442 NPPES records with a practice address in Crystal Lake, and 4,522 dentist records in Illinois.
All 4,522 in Illinois → Every provider in Crystal Lake → Dentist nationwide →
The 8 dentist records with the nearest ZIP codes
- Rachel Ehlers, DDSCrystal Lake, IL 600121245924810
- Joseph Frazier, DDSCrystal Lake, IL 600121467537332
- Thomas Kopp, DDS.Crystal Lake, IL 600121528144607
- Paul Palliser, D.D.S.Cary, IL 600131982865465
- Niraj Patel, DDSCary, IL 600131508925561
- Michael Reilly, D.D.S.Cary, IL 600131770825598
- McKaila Santos, DMDCary, IL 600131134811839
- Thomas Skleba, D.D.S.Cary, IL 600131407074149
Common questions
What is Dennis James McDowell, D.D.S.'s NPI number?
Dennis James McDowell, D.D.S.'s National Provider Identifier (NPI) is 1720150097, issued on Nov 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Dennis James McDowell, D.D.S. located?
The NPPES record lists a practice address at 690 N IL Route 31, Crystal Lake, IL, 60012. Phone: (815) 455-6120. Providers update this record themselves, so call before visiting.
How can I verify Dennis James McDowell, D.D.S.'s license?
Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does Dennis James McDowell, D.D.S. prescribe under Medicare Part D?
In 2024, Dennis James McDowell, D.D.S. had 33 Medicare Part D claims for 18 beneficiaries; the average among dentist prescribers was 86. Part D covers Medicare prescriptions 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.