Douglas Ralph Langefeld, D.D.S.
Dentist · Lake In The Hills, IL
Douglas Ralph Langefeld, D.D.S. is a dentist with a practice address in Lake In The Hills, Illinois, and NPI 1558546846, issued on Jan 4, 2008. Check the license with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Douglas Ralph Langefeld
- Credential
- D.D.S.
- Primary taxonomy
- Dentist 122300000X
- Practice location
- 4680 W Algonquin RD, Lake In The Hills, IL 60156
- Phone
- (847) 658-8508
- Enumerated
- Jan 4, 2008
- Record last updated
- Jan 4, 2008 (not updated in 18 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest dentist records → All 4,522 in Illinois → Look up another NPI →
Also registered at 4680 W Algonquin RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Marc Czapla, D.D.S.Dentist1669526117
- Mark MatthaeiDentist1831374123
Verify Douglas Ralph Langefeld 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
13% more Medicare Part D claims than the average dentist in 2024
97 Medicare Part D claims for 57 beneficiaries, against an average of 86 among the 51,021 providers of this specialty who prescribed in Part D.
Most prescribed
- Amoxicillin71 claims
- Clindamycin Hcl13 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.
Industry payments in 2024: $11.58
1 payment: food and beverage; the largest payer was Ultradent Products Inc. The 31,974 providers of this specialty with any payment received $540.36 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Douglas Ralph Langefeld among 4,522 dentist records in Illinois
Douglas Ralph Langefeld, 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 2008, is newer than 38% of them.
- NPI issued2008 · 38% of these records are older, 54% 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 updated2008 · 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).
13 dentist records list a practice address in Lake In The Hills
They are 13 of the 316 NPPES records with a practice address in Lake In The Hills, and 4,522 dentist records in Illinois.
All 4,522 in Illinois → Every provider in Lake In The Hills → Dentist nationwide →
The 8 dentist records with the nearest ZIP codes
- Richard Carron, D.D.S.Lake In The Hills, IL 601561821266297
- Marc Czapla, D.D.S.Lake In The Hills, IL 601561669526117
- Colleen FinlayLake In The Hills, IL 601561063809382
- Aman Goyal, DDSLake In The Hills, IL 601561932950367
- Brian Hodack, D.D.S.Lake In The Hills, IL 601561588832323
- Syed Hussain, DMDLake In The Hills, IL 601561598495921
- Aldina Levy, DDSLake In The Hills, IL 601561255646394
- Mark MatthaeiLake In The Hills, IL 601561831374123
Common questions
What is Douglas Ralph Langefeld, D.D.S.'s NPI number?
Douglas Ralph Langefeld, D.D.S.'s National Provider Identifier (NPI) is 1558546846, issued on Jan 4, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Douglas Ralph Langefeld, D.D.S. located?
The NPPES record lists a practice address at 4680 W Algonquin RD, Lake In The Hills, IL, 60156. Phone: (847) 658-8508. Providers update this record themselves, so call before visiting.
How can I verify Douglas Ralph Langefeld, D.D.S.'s license?
Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does Douglas Ralph Langefeld, D.D.S. prescribe under Medicare Part D?
In 2024, Douglas Ralph Langefeld, D.D.S. had 97 Medicare Part D claims for 57 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.